| Orbis Protect | Uxbridge, Hillingdon | 22 | 19 |
| VPS | Oldham, Manchester, London | 5 | 5 |
| City & Kent Cleaning | Bexhill on Sea, Dorking, East Sussex | 5 | 5 |
| Profile Security Services | Barrow upon Humber, South Humberside | 3 | 16 |
| Hi Spec Facilities Services | Dartford, Kent | 4 | 11 |
| Compass Contract Services | Birmingham | 3 | 12 |
| ISS Mediclean | Weybridge | 3 | 7 |
| Regent Office Care | Coventry, Dodalming | 3 | 11 |
| MITIE Cleaning & Environmental Services | London, Tamworth | 3 | 4 |
| Bespoke Cleaning Services | Thornbury, Thirnbury | 3 | 2 |
| Total Support Services | Orpington, Croydon | 3 | 2 |
| Inivos | London, Kings Lynn | 3 | 4 |
| Cordant Cleaning | London, Hillingdon | 3 | 3 |
| SPS Doorguard | Glasgow City, Glasgow | 2 | 4 |
| Secure Empty Property | Rossendale | 2 | 2 |
| Gemcliff | Birkenhead, Wirral | 2 | 2 |
| Alliance Facilities Management | Birkenhead | 2 | 2 |
| Fortis Hygiene & Maintenance Services | Manchester | 2 | 2 |
| GMS Property Services | Solihull, Solihill | 2 | 2 |
| Guarding Professionals | Enfield | 2 | 2 |
| Mckenzie Arnold | Faulkbourne | 2 | 2 |
| Soft FM Asset Compliance & Security Services | Liverpool, Romford | 2 | 2 |
| Churchill Contract Services | Harpenden | 3 | 40 |
| Norse Commercial Services | Norwich | 3 | 24 |
| Solo Service Group | Swansea | 3 | 7 |
| Tenon FM | London | 3 | 4 |
| Crystal Facilities Management | North Acton | 3 | 3 |
| N Viro | Portsmouth | 3 | 2 |
| Amity | Barnsley | 3 | 3 |
| Ideal Cleaning Services | Nottingham | 3 | 3 |
| Pendergate | Hatfield | 3 | 3 |
| Bunzl | London | 2 | 18 |
| Birkin Cleaning Services | Welwyn Garden City | 2 | 16 |
| Kingdom Services Group | Newton le Willows | 2 | 15 |
| Bulloughs Cleaning Services | Skipton | 2 | 14 |
| Brayborne Facilities Services | Wokingham | 2 | 11 |
| Glen Cleaning | Hotwells | 2 | 5 |
| Cleanscapes | Dorking | 2 | 8 |
| CGM Group East Anglia | Downham Market | 2 | 4 |
| Ecocleen Services | Wallingford | 2 | 4 |
| Gama Healthcare | Watford | 2 | 4 |
| Just Ask Estate Services | West Byfleet | 2 | 3 |
| Abm Facility Services | London | 2 | 2 |
| Atlas Contractors | Hanworth | 2 | 2 |
| Bright Hygiene Management London | Harlow | 2 | 2 |
| CCM Facilities | London | 2 | 2 |
| Clean360 | Derby | 2 | 2 |
| GCC Facilities Management | Sutton | 2 | 2 |
| Grosvenor Integrated Services Holdings | Skegness | 2 | 2 |
| Imperial Cleaning Services | Chippenham | 2 | 2 |
| Interclean Estate Management Services | Cannock | 2 | 2 |
| Julius Rutherfoord | London | 2 | 2 |
| Juniper Pursuits | London | 2 | 2 |
| North Kent Cleaning Services | Hadlow | 2 | 2 |
| SBFM | Harrogate | 2 | 2 |
| Trafford Cleaning Services as Part of Trafford Council | Stretford | 2 | 2 |
| Xenex Disinfection Services | London | 2 | 2 |
| Idverde | Coventry | 1 | 39 |
| CLC Contractors | Hampshire | 1 | 32 |
| Openview Security Solutions | Romford | 1 | 33 |
| Countrywide Grounds Maintenance | London | 1 | 23 |
| Environtec | Chelmsford | 1 | 20 |
| Pennington Choices | Cheshire | 1 | 18 |
| Tersus Consultancy | Wednesbury | 1 | 19 |
| HSL Compliance | Ross in Wye | 1 | 18 |
| Arrow County Supplies | Shrewsbury | 1 | 16 |
| Frankham Consultancy Group | Kent | 1 | 14 |
| Ductclean | London | 1 | 14 |
| Lift & Engineering Services | Cradley Heath | 1 | 15 |
| NMCN | Sutton in Ashfield | 1 | 13 |
| Manpower Direct | Dagenham | 1 | 12 |
| Aspect Contracts | Essex | 1 | 10 |
| Lucion Environmental | Redhill | 1 | 12 |
| OCS Group | Crawley | 1 | 11 |
| Cleantec Services | Watford | 1 | 13 |
| Harmony Fire | Childthorne Domer | 1 | 10 |
| Rhodar | Warrington | 1 | 11 |
| Aa Woods | Essex | 1 | 9 |
| Gould Landscapes | Kent | 1 | 9 |
| Life Environmental Services | Stockport | 1 | 7 |
| Eft Systems | Merseyside | 1 | 9 |
| Elis | Basingstoke | 1 | 7 |
| G4S Secure Solutions | Surrey | 1 | 7 |
| Socotec | Burton upon Trent | 1 | 7 |
| Spie Scotshield | Glasgow | 1 | 7 |
| Environmental Essentials | Staffordshire | 1 | 5 |
| NGS Gritting Services | Folkestone | 1 | 5 |
| Trinity Fire Security Systems | Abingdon | 1 | 5 |
| Addison Green | Market Weighton | 1 | 6 |
| Erith Contractors | London | 1 | 5 |
| Terminix | Cheltenham | 1 | 5 |
| Clearwater Technology | Frimley | 1 | 4 |
| Groundwork Landscapes | Bury | 1 | 4 |
| Lar | Stockport | 1 | 4 |
| Airborne Environmental Consultants | Manchester | 1 | 5 |
| Inspectas Compliance | London | 1 | 4 |
| Acorn Analytical Services | Cleckheaton | 1 | 5 |
| SSG Support Services Group | Barking | 1 | 4 |
| Otis | Liverpool | 1 | 3 |
| Synergy Health Managed Services | Dunstable | 1 | 3 |