| Novus Property Solutions | Stoke on Trent, Stoke-on-Trent, Staffordshire | 81 | 32 |
| Bell Decorating Group | Airdrie, North Shields, North Lanarkshire | 23 | 33 |
| MITIE Property Services | Glasgow, Middlesbrough, South Lanarkshire | 18 | 23 |
| Trident Maintenance Services | Coatbridge, Cramlington, North Lanarkshire | 13 | 10 |
| CLC Contractors | Southampton, Hampshire | 11 | 32 |
| Openview Security Solutions | Romford, Essex, Boldon Colliery | 11 | 33 |
| Em1 | Northallerton, North Yorkshire, Hambleton | 7 | 8 |
| Ventro | Plymouth, Devon | 12 | 5 |
| Easy Heat Systems | Perth | 10 | 10 |
| Breyer Group | Essex, Romford | 6 | 19 |
| HSL Compliance | Herefordshire, Ross on Wye | 6 | 18 |
| Woods Building Services | Essex, Harlow | 6 | 9 |
| Mchale Contracts & Plant Environmental | Bradford, West Yorkshire | 6 | 10 |
| Enviraz Scotland | Lanarkshire, Glasgow, Renfrewshire | 6 | 6 |
| Esh Construction | Durham, County Durham, Bowburn | 4 | 34 |
| Rhodar | Leeds | 4 | 11 |
| Lar | Stockport | 4 | 4 |
| Neo Property Solutions | Leeds, West Yorkshire | 10 | 10 |
| Arc Group London | London, Greater London | 7 | 12 |
| P Casey | Rochdale | 7 | 7 |
| Pennington Choices | Warrington, Cheshire | 6 | 18 |
| Ductclean | Welwyn Garden City, Welwyn Hatfield, Hertfordshire | 6 | 14 |
| Everwarm | West Lothian | 6 | 13 |
| AC Whyte | Glasgow | 6 | 3 |
| Procast Building Contractors | Strathaven | 6 | 3 |
| Ailsa Building Contractors | Coatbridge | 6 | 6 |
| Lantern Fire & Security | Crewe, Business and Technology Centre | 6 | 6 |
| L&D Plumbing & Tiling Services | Glasgow | 6 | 6 |
| MP Group | Glasgow | 6 | 6 |
| Sureserve Fire & Electrical | Essex, Burgess Hill, Basildon | 6 | 6 |
| Dodd Group Midlands | Shropshire, Telford | 5 | 11 |
| DFP Services | Durham, County Durham | 5 | 12 |
| Sovereign Group | Nelson, Lancashire | 5 | 7 |
| Sir Robert Mcalpine | Hemel Hempstead, Dacorum | 5 | 3 |
| Engie Regeneration | Newcastle upon Tyne, Welwyn Hatfield | 4 | 40 |
| Morris Spottiswood | Glasgow, Warrington | 4 | 7 |
| Read Construction Holdings | Wrexham | 4 | 4 |
| Seddon Construction | Bolton | 3 | 20 |
| Goodman Sparks | Sheffield | 3 | 3 |
| Frank Rogers Building Contractor | Liverpool, Merseyside | 8 | 6 |
| Harmony Fire | Yeovil, Somerset | 7 | 10 |
| Global Hse Solutions | Nottingham, Nottinghamshire | 7 | 7 |
| Mcintyre Electrical | Peterborough | 6 | 5 |
| Secure Electronic Applications | Dartford | 6 | 4 |
| CCG Scotland | Glasgow | 6 | 3 |
| Ian Williams | Bristol, South Gloucestershire | 5 | 19 |
| Alfred Bagnall & Sons North | Gateshead | 5 | 3 |
| Ridge & Partners | Oxfordshire, Woodstock | 4 | 38 |
| Kier Construction | Sandy | 4 | 16 |
| Frankham Consultancy Group | Kent, Sidcup | 4 | 14 |
| Tunstall Healthcare | Yorkshire, Whitley Bridge | 4 | 35 |
| Aaron Services | Essex, Basildon | 4 | 17 |
| Aspect Contracts | Essex, Basildon | 4 | 10 |
| Testing Lab | South Yorkshire, Doncaster | 4 | 9 |
| Life Environmental Services | Hertfordshire, Bishops Stortford | 4 | 7 |
| Urban Environments | Kent, Sevenoaks | 4 | 7 |
| Crystal Electronics | Northants, Wellingborough | 4 | 7 |
| H2O Nationwide | Essex, Basildon | 4 | 6 |
| 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 |
| City Building Contracts LLP Rsbi | Glasgow | 4 | 4 |
| PRP Architects | Surrey, Thames Ditton | 4 | 4 |
| Total Environmental Compliance | Northamptonshire, Corby | 4 | 4 |
| Irwin M&E | County Armagh, Craigavon | 4 | 7 |
| 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 |
| Vistry Partnerships | West Mailling, West Malling | 4 | 3 |
| Asbestos Consultants Europe | Essex, Grays | 4 | 2 |
| Cablesheer Asbestos | Kent, Orpington | 4 | 2 |
| CMS Window Systems | Cumbernauld | 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 |
| Sidey Solutions | Perth | 4 | 2 |
| Trac Associates | Lancashire, Bury | 4 | 2 |
| GD Chalmers | Paisley | 4 | 2 |
| Glendale Grounds Management | Chorley | 4 | 2 |
| 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 |
| Clarkes Environmental | North Yorkshire, Northallerton | 4 | 4 |
| D Brown Building Contractors | Spalding, Spandling | 4 | 4 |
| Delco Safety | Surrey, Cheam | 4 | 4 |
| Devine Energy | Mid Lothian, Mid | 4 | 4 |
| Edp Health Safety & Environment Consultants | Cheshire, Helsby | 4 | 4 |
| Event Fire Solutions | Oxfordshire, Banbury | 4 | 4 |
| Fire Clear | Cambridgeshire, Huntingdon | 4 | 4 |
| Firstcall Trade Services | Edinburgh | 4 | 4 |
| G&L Consultancy | Somerset, Wellington | 4 | 4 |
| Greenfield Removals | Cheshire, Hyde | 4 | 4 |
| Hughes & Associates Property Services | Norfolk, Norwich | 4 | 4 |