The story of FM over the past couple of decades or so has been one of extraordinary change. i-FM has been around to track all the action, and an analysis of the companies in our Top 50 listings shows how the industry got where it is today.

Over the past couple of decades, there’s been steady growth – in terms of overall industry value, service quality, sophistication, recognition, expectation. At the same time, bubbling under those rising trend lines, the marketplace itself has been remarkably dynamic, famous for the levels of M&A activity but also in parallel seeing many new players enter the fray while others departed. 

We launched our first industry benchmark a year after our own 1999 launch into the marketplace.  The content of the list has changed considerably over the years, but its purpose has remained the same – to provide a reliable reference point for identifying the top service providers in UK FM and tracking their business performance. There are a number of challenges involved in doing this which mainly hinge around two big questions:

• First, who to include – we include service providers who are active in more than one service area conventionally encompassed under the label ‘facilities management’; we do not include single-service companies
   
• Second, how to ensure that content is accurate and up-to-date – the list is under continuous review; facts and figures are drawn from a variety of sources, though we always give preference to official published information wherever possible.

i-FM’s benchmark rankings are used by many within the industry and by many others engaged in market research, product development and similar analysis or investigation work. We are proud to be the source of this unique list, but we are certainly open to suggestions for improvement and development – feedback is always welcome.

In this article, we look back in five-year intervals from 2016 – at 2011, 2006 and 2001 – to see how things have changed. We subsequently added updates in 2018 and 2020 as the market continued to change and develop.

Starting point
Shown below is the Top 20 – as it was back then – from 2001. Younger readers will look at many of those names and wonder who they are, or were in most cases.  No less than 14 of that original list no longer exist in the form in which they did in those days. Many, as we shall see, were key elements in the evolution of the companies in today’s benchmark list, while some others moved out of the industry altogether.

i-FM Top 20 (2001)

Company	Turnover £m
ISS UK	230
Johnson Controls	230
Trillium	206
Building & Property	202
MITIE Managed Services	136
Workplace Management	112
AMEC Facilities	80
Carillion Services	77
MacLellan	57.9
Stiell	55.7
Amey Business Services	54
Interserve	52
Turner FM	49
Pall Mall Support Services	39
Citex	37.8
Sulzer Infra CBX	34
Eurica	30
WSP Facilities	15
Dalkia Workplace Services	14
Select	12.8

Growth and change
By 2006 the Top 20 had grown to become the Top 50, following the brief existence of a Top 30 which was soon replaced with the Top 40, soon itself replaced. That rapid enlargement of the benchmark was a direct reflection of the growth of the industry generally.  And within our next reference list, below, the same pattern of change and development continues to be evident – well over half of the companies included in 2006 are gone now, gone from the list or gone altogether.

i-FM Top 50 (2006)

Company	Turnover £m
Rentokil Initial	1215
Serco	1202
Land Securities Trillium	1054.5
Sodexo	931
MITIE	818.6
Morrison	576.6
Mowlem Support Services	564
OCS	486.8
ISS	450
Interserve FM	440.7
Trammell Crow	389.3
Global Solutions Ltd	341.5
Reliance Security	310.3
Dalkia	303
Equion FM	265.5
Johnson Controls	261
Haden Building Management	256.8
AMEC Building & Facilities	250
Alfred McAlpine Business Services	250
Romec	242.9
Amey	224.9
Emcor Facilities Services	190
PHS	187.7
MacLellan	178.1
Carillion Services	177
Taylor Woodrow Facilities Management	175
Vinci Partnerships	141
Workplace Management	126
Kier	112.1
Inspace	107.3
GSH	101.8
Eurica Services	98
Turner FM	75.2
Atkins Asset Management	65.5
Gardiner & Theobald Facilities Management	62
Drivers Jonas	45
Emprise	41.9
Faceo FM	25
Jones Lang LaSalle	22.4
Covion	20
HBG FM	17.6
EC Harris Solutions	14
Ecovert FM	10.4
Incentive FM	10.1
Europa Facilities Services	9
FMS	6.8
Certainty Group	6.5
Macro	5.4
HBS Facilities Management	4.5
Derek Smith Associates	4

Consolidation
By 2011 the process of change had slowed but nevertheless remained a key feature of the market – about a third of the businesses listed then are not included today.

i-FM Top 50 (2011)

Company	Turnover £m
Serco	2587.3
Compass	1951
MITIE	1891.4
Sodexo	1038.1
Interserve FM	1007.3
ISS	912
Johnson Controls	643.7
Rentokil Initial	592.4
OCS	492
Balfour Beatty Workplace	466.6
PHS	394.6
Reliance Security	380.9
Aramark	341.4
Emcor UK	330.2
GSH	291.8
City FM	274.2
Norland Managed Services	250.7
Vinci Facilities	228.3
Carillion Services	219.6
Integral UK	199
Elior UK	195.6
Amey Built Environment	193.7
Norse Group	181.3
G4S Integrated Services	173.2
Resource Services Group	145.7
Inviron	136.9
Europa Support Services	125.3
Kier FM	112.8
Bouygues E&S	96.1
Emprise	90.6
Turner FM	67.6
John Laing Integrated Services	55.2
Atkins Asset Management	48
Servest Multi Service Group	47.9
SGP Property & Facilities Management	46.8
Macro	46.5
Modus Group	45.3
GBM Support Services	44.6
Jones Lang LaSalle	40.8
Hochtief FM	33.6
FES FM	30.4
BAM FM	26.9
Incentive FM	26.4
Robertson FM	21.7
CBRE FM	17
Anabas	8.9
Bilfinger HSG	8.2
SSS Management Services	6.9
Derwent FM	6.5
EC Harris Solutions	3.2

 

So where have all these companies gone?  A few examples will illustrate the trends that have characterised the industry seemingly forever. Taking our 2001 list as the starting point....

• Johnson Controls was a significant figure in our market for many years. The US-headquartered group became a serious player in UK FM with the 1994 acquisition of Procord, which had been formed three years earlier via an MBO of IBM UK’s property division. Procord was rebranded as Johnson Controls, and later evolved into that group’s Global Workplace Solutions business.  Then, in the context of an ongoing restructuring process at the US-headquartered company, GWS was up for sale in 2014. It was acquired by CBRE the following year. That was not CBRE’s only acquisition in this market area in recent times. It had acquired Norland Managed Services in a deal that completed early in 2014.  Norland itself had merged with its sister business Reliance Facilities Management in 2012. All this has made CBRE a significant force in FM in the UK and beyond.
   
• Workplace Management, or more accurately Chesterton Workplace Management, found itself embroiled in a long, difficult and confusing period over 2001, 2002 and into 2003 as its parent (the Chesterton property services group) fell on hard times and experienced a number of false starts in terms of recovery and/or bail-out. Late in 2003 Workplace Management was sold to the Johnson Service Group, till then mainly known for its textiles and dry cleaning businesses. In 2005 Johnson extended its activities in this business area with the acquisition of SGP Property Services, which operated in parallel with what was then known as Johnson Workplace Services. In 2007 the two were integrated together. Then in 2013, with Johnson having decided it needed to concentrate its focus elsewhere, SGP Property & Facilities Management was sold off – to be subsequently rebranded as Bellrock. (We documented this evolution a couple of years ago here.)
   
• MacLellan was a busy £200m+ support services group when it was acquired by Interserve in 2006. Acquisitions are not always immediately rebranded and the MacLellan name continued in circulation for quite some time. As another illustration of the same point, MacLellan had acquired First Security in 2004, a business that still trades under that name despite being a part of Interserve for well over 10 years. Interserve’s other big acquisition was Initial Facilities in 2014 – the deal that led us to remove Rentokil Initial from the Top 50 as the group no longer met the criteria for inclusion.
   
• Building & Property was a key component in the formation of Interserve. B&P emerged following the privatisation in the early ‘90s of central government’s Property Services Agency. It was then acquired in 2000 by the construction and services group Tilbury Douglas, which in those days included a facilities services division called Interserve.  The balance was clearly shifting in the boardroom, though, and in 2001 the entire group was rebranded as Interserve.
   
• Stiell – this one is a bit like the proverbial finger in the dyke. Stiell was a Glasgow-based FM business that muscled into the London marketplace in 2001 and subsequently did quite well across its expanded territory. It was acquired in 2002 by construction to services company Alfred McAlpine. McAlpine was then acquired by Carillion in 2008, building on Carillion’s earlier acquisitions of FM specialist Citex (2002), M&E business PME (2005) and construction and services group Mowlem (2006). Some of the team behind Stiell, incidentally, went on to back the transformation of Europa Support Services, ultimately moving it towards the current [at the time of writing] Bilfinger Europa Facility Management [which subsequently became Apleona - see below].
   
• Mowlem had boosted its FM services credentials with the 2001 buy of cleaning specialist Pall Mall. Carillion sold the Pall Mall business to Northern Ireland-based Resources Services in 2007. Resource did well for a number of years but then got into trouble and was ultimately sold by administrators to Dublin-headquartered Noonan in 2014.
   
• CBX was established in the ‘90s via an MBO of the Xerox UK property services department. Operating as a facilities management provider (that is, no direct services delivery, which was the more common model in those days), CBX was both a considerable success and a true pioneer in the industry. The business was acquired by Sulzer Infra, the services division of a Swiss engineering and manufacturing group, in 2000 at a time when FM was expected to take off across Europe (there was much talk of ‘pan-European solutions’). In truth, that talk was premature and Sulzer seemed not really to understand the business it had acquired. Soon Sulzer Infra was sold to a Belgian subsidiary of the Suez group and the CBX operation was rebranded as Axima FM. More change followed, with Axima ultimately being absorbed into Suez and then forming one component of the Cofely business which was created in 2009 (with Cofely and the wider GDF-Suez group rebranding to Engie in 2015). 
   
• Trillium reflects two themes in the evolution of FM: overlapping interests with the property industry and a brief flurry of big, often property-based deals dating initially from a couple of decades ago. Trillium was set up in the second half of the ‘90s to manage a 20-year property and FM outsourcing contract with the Department for Work and Pensions. It was subsequently acquired by Land Securities and continued to be a specialist in those sorts of deals, as well as the wider PPP arena. In 2009 the business was sold off to another property advisor, Telereal, forming the current Telereal Trillium which continues to focus on property-based investment and management services.
   
• Like many old established construction and engineering groups, Amec had some trouble adjusting to the changing business environment they found themselves in during the ‘90s and into the 2000s. In Amec’s case, one strategy adopted was the sale of its Building & Facilities hard FM operations to Spie (somewhat ironic as Amec had owned Spie until selling it off the year before).  Now Amec Foster Wheeler, the group focuses on big energy projects. Spie went on the acquire Hochtief Facility Management in 2013.
   
• Eurica was the facilities services division of the ISG Group. By about 2005, however, ISG was moving away from FM and towards an increasing focus on construction and fit-out activities. In that year Eurica was sold to the recently formed Erinaceous, an ambitious – some would say audacious – property services business aiming to be a one-stop-shop for all such requirements. Over the next couple of years Erinaceous was a regular feature in the headlines, with talk of trouble, bids, MBOs, more trouble, and finally a collapse into administration in 2008.
   
• WSP rebranded its facilities business as Knowledge Solutions in 2002 – and in a sense it just drifted away over the years as the consultancy pursued its wider focus on asset management and sustainability.
   
• Dalkia’s UK hard FM business was acquired by Mitie in 2009, giving that group a big boost in the sector.  The following year Mitie added Dalkia’s Irish FM business to the fold.
   
• Select was the OCS facilities management business before the group began to shift its orientation towards more integrated operations.

The above quick summaries are just the tip of the iceberg in this incredibly busy marketplace. We’ve followed the changes carefully through the years, and one of our contributors looked at some of the big issues for the industry in a thoughtful piece published in 2005 (one that remains remarkably relevant today). You can of course use i-FM’s search function to trace the issues and trends or the path of any company we have reported on since 1999.

Progress over the years
The impact of all this M&A activity is indicated in the following table which summarises turnover figures for the companies that have been listed consistently in our rankings since 2001 (though of course M&A is just one factor in each case: other big factors include the trajectory of organic growth for each company and the state of the wider economy).

Company	2001 (£m)	2006 (£m)	2011 (£m)	2016 (£m)
ISS	230	450	912	1058
Mitie	136	818.6	1891.4	2273.8
Carillion	99.7	177	219.6	174
Amey	54	224.9	193.7	232.8
Interserve	52	440.7	1007.3	1834.4
Turner FM [later removed]	49	75.2	67.7	81.2
Ecovert FM (Bouygues)	-	10.4	96.1	127.8
Emcor UK	-	190	330.2	224.6
Emprise [later Atlas FM]	-	41.9	90.6	118.5
(Bilfinger) Europa [later Apleona]	-	9	125.3	158
Incentive FM	-	10.1	26.4	63.7
Jones Lang LaSalle [later JLL]	-	22.4	40.8	67.7
Kier FM	-	64.5	112.8	112.1
Macro [later Mace]	-	5.4	46.5	87.9
OCS	-	486.8	492	531
PHS [later removed]	-	187.7	394.6	385.2
Serco	-	1202	2587.3	1647.9
Sodexo	-	931	1038.1	1445
Vinci Partnerships (Facilities)	-	141	228.3	213.8

The bracketed notes above show more recent change: Turner and PHS were removed from the Top 50 as those businesses moved away from mainstream FM; Emprise fell into administration and was acquired by Atlas in 2017; the Bilfinger FM business became Apleona HSG, as noted elsewhere in this article; and Macro rebranded, taking on its parent company’s name in 2020.

A big and important industry
Finally, by way of illustrating how increasingly significant facilities management has become within UK plc, shown below are the ‘headline’ figures for the Top 50 over the 10-year span.

	2006	2011	2016
Total turnover £m	12,873,200	16,576,100	17,212,300
Total employment	329,425	483,421	421,466

Over the second five years the trend has flattened somewhat in the case of turnover growth, largely reflecting recession impacts. In the case of employment, the decline reflects both those impacts and the departure from the list of some high-number companies (for example, Rentokil Initial).

Those effects notwithstanding, facilities management remains a very significant industry – and will no doubt continue its strong upward path over the coming five years. Check in with our current Top 50 listing here.

Update: June 2018

Two years after the above article was written there is much to add. And much of that centres around financial problems which now seem to be fundamental to the FM industry as it has evolved in the UK – if, when and how they are resolved will certainly shape the future of the business.

If someone had suggested even just a year ago (say, mid 2017 or earlier) that one of the industry’s biggest players, one of the companies most involved in the consolidation trends outlined above, could find itself seemingly overnight in liquidation, most industry observers would have rejected the idea out of hand. But in January this year (ie 2018) Carillion was indeed handed over to liquidators. The reverberations have been felt in virtually every part of the industry, though what it actually means for the future of the FM business – and outsourcing more generally – remains to be seen. We believe that it must mean something: there are unquestionably lessons to be learned for both providers and clients.

Carillion was by far the worst case of ‘coming unstuck’, but it was not the only company to suffer big financial problems in recent times – and in public, thanks to their listed status. Concerning signs were being seen at Mitie in 2016 and by early 2017 the scale of the problems were becoming apparent. Interserve was operating on a similar timeline. There are distinct differences between the companies – for example, like Carillion, problems on the construction side impacted Interserve – but there are also clear parallels including the need to reorganise and refocus across the business, driven in both cases by newly arrived CEOs. 

In a sense, two other service providers pioneered this disaster/transformation strategy/recovery path scenario – Serco and G4S. For the former it was a case, in part, of rapid growth in a number of different business areas leading to a big, sprawling organisation that was difficult to guide and manage – observations that were later made about some other outsourcers, too. The growing problems at Serco began to hit the headlines in 2014, with senior management citing the ‘difficult’ and ‘challenging’ conditions having an adverse impact on performance. The company went on to report huge losses and launched a strategy aimed at reorienting and streamlining the business. That’s an ongoing process at this point.

G4S found itself in a broadly similar position over about the same period, with poor performance exacerbated by a couple of specific service failures, notably the security debacle at the 2012 London Olympics and ‘issues’ that later arose on a Ministry of Justice offender tagging contract (Serco was caught up in that one, too). There was also the rather strange subsequent experience of watching the FM side of the business being built up substantially, only to see most of the new senior team leave again when they apparently did not receive the expected backing for growth. But, like Serco, recent company reports suggest that a multi-year transformation strategy is working.

Mitie, Interserve, Serco and G4S all appear to be on the right track again, but if the post-recession years have taught us anything it’s probably to temper optimism with caution.

More positive change
Elsewhere in the industry there have been big changes of a different nature. First, Bilfinger Europa became Apleona HSG. In 2016 Bilfinger, the German construction and services group, sold its building and facilities business to the Swedish investment company EQT. Some months later the business was rebranded, positioning the UK operation as a part of an EQT-backed European services group. We tracked the evolution of the UK operation from its early days to the most recent change in a market history article that you can read here. (To find all of our market history articles, do a news search on the topic ‘market history’ here.) 

Then another one of our Top 50 companies, Servest, became Atalian Servest this year, 2018. Atalian is a big French facilities services provider that operates on the continent as well as in the US, Asia and Africa. In 2016 it struck a deal with the smaller but equally ambitious Servest to work together where international opportunities presented themselves. The relationship was obviously a good one, as less than two years later we were reporting news of Servest’s acquisition by the French group. 

Servest has also been, in another way, a good example of another continuing trend in the FM sector – namely, growth through acquisition, often to extend service capabilities and/or gain a presence in new markets or territories. Even as it was itself being acquired, Servest was adding to quite a long list of purchased companies, the latest being a catering contractor and a hard services specialist.

Other deals have been done in recent times by the Top 50 mid-market players Incentive (M&E service providers and window cleaning companies, for example), Churchill (catering, security), NG Bailey (engineering), ABM (catering, cleaning) and Vertas (cleaning, security, waste management).

Update: June 2020

The two years post Carillion has seen central government take a number of steps to revise and improve its outsourcing procedures and outcomes. Initially, the Cabinet Office unveiled a package of measures designed to promote "a healthy and diverse marketplace" of companies bidding for government contracts. This was coupled with plans to extend the requirements of the Social Value Act to ensure all major procurements explicitly evaluated social value where appropriate, rather than just ‘consider’ it. Parallel measures sought to emphasise equality and diversity, “responsible capitalism”, increased transparency and improved training for government procurers.

Later announcements focused on using contracts as a "force for good". To achieve that, the Cabinet Office said, government procurement would be required to take social and economic benefits into account in priority areas. These include supporting small businesses, providing employment opportunities for disadvantaged people and reducing harm to the environment.

All of this culminated in the publication (in February 2019, a year after Carillion’s collapse) of a new guide on outsourcing decisions and contracting - the Outsourcing Playbook, designed to improve how government works with industry and to deliver better public services. The guide aimed to ensure that the government gets right more projects from the start, engages with a diverse and healthy marketplace of companies, including small businesses and charities, and is ready for the rare occasions when things go wrong. It was broadly welcomed by the industry and, in line with government’s commitment to move forward, working together with suppliers to improve things, a revised and updated version was published in June 2020.

To continue the follow-up theme on highlights from our 2018 update above:

• Interserve put itself into a pre-planned administration in March 2019 and immediately emerged as a restructured business owned by its lenders. Since then there have been a number of senior departures, including CEO Debbie White, and additional steps in the restructuring; but it now appears to be in solid shape.
• Serco continued on its improvement trend, announcing a good set of results for 2019 with the news that it had reached “escape velocity” and thus left behind the lingering effects of mistakes and mis-steps in the recent past.
• And Mitie continued to sharpen its focus on core services with the sale of its catering operations (Gather & Gather, mainly) to catering specialist CH&CO. That followed Mitie’s earlier acquisition of the VSG security business from Compass and the sale of its social housing business to Mears. CH&CO, incidentally, went on to make a string of additional acquisitions, buildings its catering offer and reach thanks to strong investor backing.

A number of other themes were increasingly evident within the FM marketplace during this period, reflecting issues and trends in the wider world.

One of these was technology, both as a tool for organisations and individuals and as a shaper of companies and their service offerings. As an example – we reported late in 2018 the news that ENGIE had acquired Smart Buildings Ltd, a specialist in developing internet of things systems that integrate devices to give customers improved building management experiences. ENGIE said the deal would provide a step-change in its capabilities and significantly enhance the solutions it is able to offer, noting that the move would enable it to combine its strong heritage in facilities management, energy and energy services with smart building knowledge. In addition, ‘technology-led’, or variations on that, have become part of the brand descriptions of some FM companies, notably Cloudfm and Bellrock.

Energy and energy services have themselves become a significant area of interest for a number of FM service providers – to a great extent against the backdrop of growing concern around climate change. In 2019 we reported that 23 of the UK's leading commercial property owners had signed up to tackle the growing risk through the delivery of net zero carbon real estate portfolios by 2050. That was emblematic of commitments made by a whole string of FM service providers, including ENGIE, Mitie, Sodexo, ISS, JLL and more.

The whole area of wellbeing saw similar commitments made – and actions taken – as it became a growing theme through 2019 and most definitely into 2020.

Each of these trends, and the take-up of programmes and services around them, represents both good business practice and recognition of market opportunity (even if the latter is measured in terms of the attraction and retention of good people, as in the case of wellbeing).

Finally, there are two other changes of note. First, Macro announced that it was rebranding to its parent group name, Mace, as part of a wider group restructure. And, second, in one of the biggest moves the industry has seen in a long time, Mitie revealed that it had signed an acquisition agreement with Interserve Support Services. The deal, due to be completed before the end of the year, was described by Mitie as “transformative” as it looked forward to becoming the UK’s largest FM company by far (Mitie already sits a No 1 in the Top 50).

All change
2020 was still in its first quarter when the Covid-19 pandemic hit the UK, changing everything in very short order. We introduced a Covid-19 topic into our search function early on, and content under that topic was accumulated at record speed – you can use it to find out how service providers have dealt with the pandemic impacts, as well as to find advice and resources for the ongoing implications.

In March, in an unprecedented move the Cabinet Office asked service providers to work together to ensure that public sector contracts were adequately covered. This was a point at which providers’ private sector work in particular was drying up fast, the future looked entirely unpredictable and the government-backed Coronavirus Job Retention – ie, furlough - Scheme was being called into use rapidly to prevent massive job loss. Some FM companies did take over contracts previously held by others, though this was generally done without publicity; many companies redeployed staff from ‘dead’ contracts to meet pressing needs within the healthcare sector; and a number pitched in to support the creation and operation of the new stop-gap Nightingale Hospitals.

We also saw performance guidance withdrawn by various listed companies, as well as related warnings concerning the prospects of others. These came especially from larger providers - Serco, Compass, Mitie, ENGIE, Sodexo and ISS, for example. All were taking actions to limit the damage; and all were introducing programmes to provide their employees with as much support as possible. It will, though, be many months before we know how badly companies have been hit; but it does seem likely that as businesses are able to return to some semblance of normal, reports of redundancies will provide an early indicator of the costs Covid-19 has imposed on the FM industry.

There is some amount of silver-lining here, however, in that FM and the services within it have enjoyed a new recognition of their importance and the value they add to individuals, organisations and society at large. The challenge for the industry, and the institutes and associations within it, will be to build on that recognition for the benefit of FM overall. A part of that challenge will be to retain the focus on the crucial ‘big-picture’ issues - social value, sustainability, wellbeing and the like – while also meeting current pressing needs for ‘commodity’ services such as cleaning and hygiene.

All of the events cited in this article have been covered extensively on i-FM. You can find out more by searching on the company name or on any keyword.

Appendix
Where are they now?
A quick guide to the status of companies named in this article (please note that some names have varied over the years)

Company
Alfred McAlpine Business Services	Acquired by Carillion in 2008
AMEC Facilities	Acquired by Spie in 2007
Amey	i-FM Top 50
Anabas	i-FM Top 50
Aramark	Removed from the Top 50 as business focus narrowed to catering
Atalian Servest	Created by the acquisition of Servest (see below) by the French Atalian Group in 2018.  Acquired by investment company CDR in 2023 to create enlarged OCS Group (see below)
Atkins Asset Management	Acquired by Sodexo in 2011
Atlas FM	i-FM Top 50.  See Emprise below
Balfour Beatty Workplace	Acquired in 2013 by Cofely (which later became part of ENGIE)
BAM FM	i-FM Top 50
Bidvest Noonan	i-FM Top 50.  Noonan Services was acquired by Bidvest Group in 2017 (see Resource Services below)
Bilfinger HSG	One of several divisions sold to investors in 2016, subsequently rebranded as Apleona HSG FM, then Apleona UK
Bouygues E&S	Removed from Top 50. Bouygues Group acquired Equans in 2022, with Bouygues E&S rebranded to Equans E&S in the UK in 2024 (Equans was spun out of the ENGIE Group in 2021)
Building & Property	Acquired by Tilbury Douglas in 2000 (then part of the rebrand to Interserve)
Carillion	Put into liquidation in 2018
CBRE	i-FM Top 50
CBX	Acquired by Sulzer Infra in 2000 (parts were later sold on to businesses that eventually became ENGIE)
Citex	Acquired by Carillion in 2002
City FM	i-FM Top 50
Compass	i-FM Top 50
Covion	Acquired by Balfour Beatty in 2007
Dalkia UK	Co-owner of Inviron since 2017, that business was rebranded as Dalkia in 2023. I-FM Top 50
Dalkia Workplace Services	Acquired by Mitie in 2009
Derek Smith Associates	Acquired by and rebranded as SGMS in 2009 (SGMS was then bought out of administration by Integral UK in 2010)
Ecovert FM	Rebranded in 2013 as Bouygues Energies & Services
Elior UK	Removed from the Top 50 as the business narrowed its focus
EMCOR UK	i-FM Top 50
Emprise	Bought out of administration by Atlas FM in 2017
Equion FM	Division of John Laing that became John Laing Integrated Services in 2007. Sold to Carillion in 2013
Eurica	Acquired by new property services group Erinaceous in 2005, which collapsed in 2008
Europa Support Services	Acquired by Bilfinger in 2013, ultimately becoming Apleona
Faceo FM	Acquired by Vinci Facilities in 2010
FES FM	i-FM Top 50
G4S Integrated Services	i-FM Top 50, now G4S Facilities Management
GBM Support Services	Acquired by ABM in 2014
Global Solutions Ltd	Acquired by G4S in 2008
GSH	UK, Ireland & European operations acquired by ISS in 2015
Haden Building Management	Division rebranded as Balfour Beatty WorkPlace in 2008
HBG FM	BAM division, part of a rebrand to BAM FM in 2008
Hochtief FM	Acquired by Spie in 2013
Incentive FM	Acquired by Atalian Servest in 2022
Inspace	Acquired by construction/interiors business Willmott Dixon in 2008
Integral UK	Acquired by JLL in 2016
Interserve	Acquired by Mitie in 2020
Inviron	Rebranded as Dalkia UK in 2023 (see above)
ISS	i-FM Top 50
Johnson Controls GWS	Acquired by CBRE in 2015
Jones Lang Lasalle	i-FM Top 50 (rebranded JLL in 2014)
Kier FM	i-FM Top 50
MacLellan	Acquired by Interserve in 2006
Macro	i-FM Top 50. Rebranded to Mace Operate in 2020, then back to Macro in 2023 via an MBO
Mitie	i-FM Top 50
Modus Group	Acquired by Rentokil Initial in 2012
Mowlem Support Services	Acquired by Carillion in 2006
Norland Managed Services	Acquired by CBRE in 2014
Norse	i-FM Top 50
OCS	i-FM Top 50. Acquired by investors CDR in 2022 (see Atalian Servest above)
Pall Mall	Acquired by Mowlem in 2001 (subsequently sold by Carillion to Resource Services in 2007)
PHS	Removed from the Top 50 as the business narrowed its focus
Reliance FM	Merged into sister business Norland Managed Services in 2012
Rentokil Initial	Removed from the Top 50 in 2014 as its FM services operations were sold off
Resource Services Group	Bought out of administration by Noonan Services in 2014
Robertson FM	i-FM Top 50
Romec	Joint venture services provider (Royal Mail & Haden Building Management) taken in-house in 2016
Select	this OCS brand was dropped as the group strengthened its own focus on integrated FM services
Serco	i-FM Top 50
Servest Multi Service Group	Acquired by Atalian in 2018 (see Atalian Servest above)
SGP Property & Facilities Management	Acquired by Johnson Service Group in 2005 (with the business ultimately being part of the sale and rebrand that created Bellrock)
Sodexo	i-FM Top 50
Spie	UK business acquired by Imtech (Inviron’s parent – see Inviron above) in 2022
Stiell	Acquired by Alfred McAlpine in 2002
Taylor Woodrow FM	Acquired by Vinci Facilities in 2008
Trillium	Acquired by Land Securities in 2000, then sold on to Telereal in 2009
Trammell Crow	Acquired by CBRE in 2006
Turner FM	Removed from the Top 50 as the business was reshaped within the Turner Group
Vinci Facilities	i-FM Top 50
WSP Facilities	Rebranded as Knowledge Solutions in 2002, subsequently being absorbed into the wider business
Workplace Management	Acquired by Johnson Service Group in 2003 (with the business ultimately being part of the sale and rebrand that created Bellrock)