| Sure Maintenance | Liverpool, Basildon | 18 | 23 |
| Aaron Services | Ipswich, Essex, Kent | 5 | 17 |
| Crystal Electronics | Northamptonshire, Earls Barton | 4 | 7 |
| Engie Regeneration | Hebburn, North Lanarkshire, Newcastle upon Tyne | 4 | 40 |
| Mi Space | Devon, Exeter, Newport | 3 | 8 |
| British Gas Social Housing | Cheshire, Chesire, Runcorn | 3 | 7 |
| Custom Solar | Derbyshire, Lancashire, Chesterfield | 3 | 2 |
| Low Carbon Exchange | Weston Super Mare, Somerset | 3 | 3 |
| Thermal Earth | Ammanford, Carms | 3 | 3 |
| JC Construction | Liverpool, Netherley | 4 | 4 |
| Dasco Construction | Northenden, Wigan | 4 | 4 |
| United Living North | Swanley, Kent | 3 | 6 |
| Casey Group | Rochdale | 2 | 17 |
| Integrated Water Services | Walsall | 2 | 9 |
| BSW Heating | Kenley | 2 | 11 |
| Robert Heath Heating | New Malden | 2 | 12 |
| Swale Heating | Sittingbourne | 2 | 10 |
| Sustainable Building Services | Lancashire, Skelmersdale | 2 | 9 |
| Everwarm | West Lothian, Bathgate | 2 | 13 |
| Arc Group London | London | 2 | 12 |
| Eon Energy Solutions | Nottingham, Coventry | 2 | 9 |
| Ad Construction Group Architectural Decorators | Bexley, Kent | 2 | 7 |
| Smith & Byford | Cheam | 2 | 8 |
| K&T Heating Services | London | 2 | 6 |
| Mcintyre Electrical | Peterborough | 2 | 5 |
| Swarco | Hemel Hempstead | 2 | 6 |
| United Living South | Kent, Cardiff | 2 | 5 |
| Correct Contract Services | Andover | 2 | 6 |
| Ecolution Group | Addington | 2 | 5 |
| WG Wigginton | Middlesex, Rockware Avenue Greenford | 2 | 4 |
| Ameresco | London | 2 | 4 |
| Thermoserv | Croydon | 2 | 3 |
| Aran Services | Bury St Edmunds, Suffolk | 2 | 2 |
| Btu Installation & Maintenance | Guildford | 2 | 3 |
| Avrs Systems | Cumbria | 2 | 2 |
| Quality Heating Services | High Wycombe | 2 | 2 |
| Renuvo | Tamworth | 2 | 2 |
| Gibson Specialist Technical Services | Bridgend | 2 | 2 |
| Goom Electrical | London Colney | 2 | 2 |
| Greenhithe Electrical Services | Bexleyheath | 2 | 2 |
| Insulated Render Systems Scotland | North Lanarkshire, Airdrie | 2 | 2 |
| Ivor Cook | Gwent, Newport | 2 | 2 |
| KT Heating | Basildon, Essex | 2 | 2 |
| Synergize | Leeds | 2 | 2 |
| Wiggett Group | Brentwood | 2 | 2 |
| Zing Energy | Rhondda Cynon Taff, Cardiff | 2 | 2 |
| Bell Decorating Group | North Shields | 2 | 33 |
| Esh Construction | Bowburn | 2 | 34 |
| MITIE Property Services | Middlesbrough | 2 | 23 |
| Ian Williams | Morley | 2 | 19 |
| Trident Maintenance Services | Coatbridge | 2 | 10 |
| Hodgson Sayers | Stanley | 2 | 9 |
| John Flowers | Washington | 2 | 9 |
| Gas Call Services | Speke | 2 | 8 |
| Sovereign Group | Nelson | 2 | 7 |
| Sendrig Construction | Newcastle upon Tyne | 2 | 4 |
| Pacifica Home Services | Houghton le Spring | 2 | 5 |
| Springs Roofing | County Durham | 2 | 5 |
| M&J Group Construction & Roofing | Bedford | 2 | 3 |
| Kde | Runcorn | 2 | 5 |
| Vision Building Services | Stockton | 2 | 4 |
| Hve Services Stockton on Tees Borough Council | Billingham | 2 | 2 |
| Zenith Mechanical Services | Consett | 2 | 3 |
| Straightline NE | Brunswick Village | 2 | 2 |
| Parklands Services NW | Wigan | 2 | 2 |
| Upholland Property Services | Skelmersdale | 2 | 2 |
| Alfred & Bagnall & Sons NE | Gateshead | 2 | 2 |
| Ash Integrated Services | Bingley | 2 | 2 |
| Barlows | Cheshire | 2 | 2 |
| Daly Drains | Manchester | 2 | 2 |
| Elect Building & Maintenance | Liverpool | 2 | 2 |
| GV Decorators | Middlesbrough | 2 | 2 |
| Innercity Roofing Yorkshire | Leeds | 2 | 2 |
| Project Facilities Management | Cramlington | 2 | 2 |
| Rated Roofing | Darlington | 2 | 2 |
| RC Ayres Building & Roofing Services | Middlesbrough | 2 | 2 |
| Re Gen Group | Gateshead | 2 | 2 |
| Sheila Mays Carpets of Teesside | Middlesbrough | 2 | 2 |
| Sunter | Hetton le Hole | 2 | 2 |
| Tanfield Groundworks | Consett | 2 | 2 |
| Warsett | Redcar | 2 | 2 |
| Breyer Group | Essex | 1 | 19 |
| Matthews & Tannert | Ashfield | 1 | 7 |
| Lawtech Group | Kent | 1 | 4 |
| Kensa Contracting | Truro | 1 | 2 |
| Aes | Morayshire | 1 | 1 |
| Amaresco | London | 1 | 1 |
| Easy Heat Systems | Perth and Kinross | 1 | 1 |
| Eon Energy Solutionas | Coventry | 1 | 1 |
| Kensa | Truro | 1 | 1 |
| Lawtech | Rochester | 1 | 1 |
| MP Group | Glasgow | 1 | 1 |