| Norse Commercial Services | Norwich | 46 | 24 |
| Norse Commercial Services Limted | Norwich | 2 | 2 |
| Norse Commercial Services Centric Works | Norwich | 1 | 1 |
| Dodd Group Midlands | Shropshire, Telford | 9 | 11 |
| Compass Contract Services | Birmingham, West Midlands, Rubery | 7 | 12 |
| Urban Environments | Sevenoaks, Kent | 7 | 7 |
| H2O Nationwide | Basildon, Essex | 7 | 6 |
| Total Environmental Compliance | Corby, Northamptonshire | 7 | 4 |
| Water Hygiene Centre | Oxfordshire, Oxon, Hook Norton | 7 | 7 |
| BJF Connections | Maidstone, Kent | 5 | 5 |
| MPD FM | Dagenham, Essex | 5 | 5 |
| Trios Facilities Management | Weybridge, Surrey | 5 | 5 |
| Churchill Contract Services | Harpenden, Hertfordshire | 7 | 40 |
| CLC Contractors | Southampton | 7 | 32 |
| Integrated Water Services | Walsall | 7 | 9 |
| Healthy Buildings | Reading, Spencers Wood | 7 | 7 |
| Healthy Buildings Ireland | Reading, Newry | 7 | 7 |
| Pendergate | Hatfield, Hertfordshire | 6 | 6 |
| Richard Irvin FM | London | 5 | 6 |
| Just Ask Estate Services | West Byfleet, Surrey | 5 | 3 |
| Vertas Group | Ipswich | 5 | 3 |
| Mears Facilities Management A Trading Division of Mears | Gloucester, Brockworth | 5 | 5 |
| Countrywide Grounds Maintenance | Brackley, Cheadle Hulme, Hulme | 4 | 23 |
| Derwent FM | Derby, Harrogate | 3 | 3 |
| Frank Rogers Building Contractor | Liverpool, Merseyside | 8 | 6 |
| Neo Property Solutions | Leeds, West Yorkshire | 7 | 10 |
| Harmony Fire | Yeovil, Somerset | 7 | 10 |
| Ventro | Plymouth, Devon | 7 | 5 |
| Irwin M&E | County Armagh, Craigavon | 7 | 7 |
| Global Hse Solutions | Nottingham, Nottinghamshire | 7 | 7 |
| See Rail | Essex, Ilford | 7 | 7 |
| CGM Group East Anglia | Downham Market | 6 | 4 |
| Tenon FM | Uxbridge, London | 6 | 4 |
| Crystal Facilities Management | London, North Acton | 6 | 3 |
| H& J Martin | Belfast | 6 | 3 |
| Kingdom Services Group | Newton le Willows | 5 | 15 |
| Ridge & Partners | Oxfordshire, Woodstock | 4 | 38 |
| Breyer Group | Essex, Romford | 4 | 19 |
| HSL Compliance | Herefordshire, Ross on Wye | 4 | 18 |
| Frankham Consultancy Group | Kent, Sidcup | 4 | 14 |
| Tunstall Healthcare | Yorkshire, Whitley Bridge | 4 | 35 |
| Aaron Services | Essex, Basildon | 4 | 17 |
| DFP Services | Durham, County Durham | 4 | 12 |
| Aspect Contracts | Essex, Basildon | 4 | 10 |
| Woods Building Services | Essex, Harlow | 4 | 9 |
| Testing Lab | South Yorkshire, Doncaster | 4 | 9 |
| Mchale Contracts & Plant Environmental | West Yorkshire, Bradford | 4 | 10 |
| Em1 | North Yorkshire, Northallerton | 4 | 8 |
| Life Environmental Services | Hertfordshire, Bishops Stortford | 4 | 7 |
| ISS Mediclean | Weybridge | 4 | 7 |
| Crystal Electronics | Northants, Wellingborough | 4 | 7 |
| Midland Fire Security Services | Staffordshire, East Staffordshire | 4 | 5 |
| Erith Contractors | Kent, Erith | 4 | 5 |
| Appello Smart Living Solutions | Hampshire, Queensway | 4 | 4 |
| Bailey Partnership Consultants | Devon, Plymouth | 4 | 4 |
| PRP Architects | Surrey, Thames Ditton | 4 | 4 |
| Gully Howard Technical | Hampshire, Portsmouth | 4 | 5 |
| Rge Services | Essex, Chigwell | 4 | 5 |
| SMS Environmental | Oxfordshire, Didcot | 4 | 3 |
| WG Wigginton | Middlesex, Greenford | 4 | 4 |
| Countrywide Environmental Services | Staffordshire, Rugeley | 4 | 3 |
| NRT Building Services Group | Surrey, Reigate and Banstead | 4 | 3 |
| Asbestos Consultants Europe | Essex, Grays | 4 | 2 |
| Cablesheer Asbestos | Kent, Orpington | 4 | 2 |
| Electrical Compliance & Safety | Northamptonshire, Earlstrees Industrial Estate | 4 | 2 |
| Farrendale | Nottinghamshire, Sherwood Energy Village | 4 | 2 |
| Norwood Electrical | Derbyshire, North West Leicestershire | 4 | 2 |
| PA Group | Cheshire, Helsby | 4 | 2 |
| Reactive Integrated Services | Staffordshire, Burton on Trent | 4 | 2 |
| Trac Associates | Lancashire, Bury | 4 | 2 |
| Abm Facility Services | London | 4 | 4 |
| Architectural Decorators | Kent, Sidcup | 4 | 4 |
| Arg Europe | Hertfordshire, Waltham Cross | 4 | 4 |
| Arvag | Kent, Swanley Village | 4 | 4 |
| BB7 Group | Kent, Rochester | 4 | 4 |
| City & Kent Cleaning | Bexhill on Sea, Dorking | 4 | 4 |
| Clarkes Environmental | North Yorkshire, Northallerton | 4 | 4 |
| Delco Safety | Surrey, Cheam | 4 | 4 |
| Devine Energy | Mid Lothian, Mid | 4 | 4 |
| Edp Health Safety & Environment Consultants | Cheshire, Helsby | 4 | 4 |
| Enviraz Scotland | Lanarkshire, Glasgow | 4 | 4 |
| Eric Wright FM | Preston | 4 | 4 |
| Event Fire Solutions | Oxfordshire, Banbury | 4 | 4 |
| Fire Clear | Cambridgeshire, Huntingdon | 4 | 4 |
| G&L Consultancy | Somerset, Wellington | 4 | 4 |
| Greenfield Removals | Cheshire, Hyde | 4 | 4 |
| Greenfingers Landscape | Rhayader, Powys | 4 | 4 |
| Hughes & Associates Property Services | Norfolk, Norwich | 4 | 4 |
| K & T Heating Services | Essex, Basildon | 4 | 4 |
| London Bridge Associates | Buckinghamshire, Gerrards Cross | 4 | 4 |
| Momentum 4 | Stirlingshire, Falkirk | 4 | 4 |
| Pier Contractors | Hertfordshire, St Albans | 4 | 4 |
| Reddish Vale Insulations | Lancashire, Oldham | 4 | 4 |
| Sureserve Fire & Electrical | Essex, Basildon | 4 | 4 |
| Total Fire Group | Lancashire, Milnrow | 4 | 4 |
| Trail Services | Kent, Northfleet | 4 | 4 |
| TS&B Contractors | Kent, Maidstone | 4 | 4 |
| TWC Services | Buckinghamshire, Buckingham | 4 | 4 |
| Lindum Group | Lincoln | 3 | 25 |
| TSG Building Services | Hertfordshire, Potters Bar | 3 | 16 |