| CME Heating | Luton, Beds, Alton Road Luton | 15 | 17 |
| Tencer | High Wycombe, Lincolns Park Business Centre, Buckinghamshire | 19 | 16 |
| Turney Brothers | Howard Crescent, Seer Green, Sear Green | 8 | 6 |
| Allen Roofing | Bourne End, Wooburn Green | 6 | 6 |
| Oxfordshire Fencing Group | Oxon, South Oxfordshire, Wheatley Oxon | 3 | 3 |
| Telnik Roofing | Aylesbury | 24 | 10 |
| Tofield | Milton Keynes, Bletchley | 21 | 16 |
| SLN Aylesbury | Aylesbury, Sharp Close Aylesbury | 17 | 6 |
| EE Keen | Amersham | 15 | 12 |
| 3D Aluminium Plas | Oxon, Oxford | 10 | 10 |
| 3D Aluminium | Eynsham, Witney | 4 | 4 |
| Ameo Professional Services | London, Birmingham | 4 | 4 |
| National Youth Advocacy Service | Birkenhead, Merseyside | 3 | 3 |
| Colin Clarke Construction | High Wycombe, Holmer Green | 3 | 4 |
| Progress Schools | Bootle, Sefton | 3 | 3 |
| WSP | Greater London, Bristol | 2 | 132 |
| Danfo | Isleworth, Hounslow | 2 | 5 |
| Turner & Townsend Consulting | Leeds, London | 2 | 5 |
| BBCS | High Wycombe | 2 | 3 |
| Turney Brothers Builders | Seer Green, Beaconsfield | 2 | 4 |
| CME | Silsoe, Luton | 2 | 2 |
| JNP Group | Chesham, Sheffield | 2 | 2 |
| MK Surveys | Milton Keynes | 2 | 2 |
| Robin H Perkins | Aylesbury | 2 | 2 |
| Salveo Care | Bourne End, Gerrards Cross | 2 | 2 |
| Industrial Pipe Services | High Wycombe | 8 | 6 |
| PSB Consulting | Abingdon | 5 | 5 |
| PSB Consulting Engineers Oxford | Abingdon | 4 | 10 |
| Northgate Public Services | Hemel Hempstead | 3 | 44 |
| Pohwer | Stevenage | 3 | 5 |
| Yellow Cars | High Wycombe | 3 | 4 |
| Alcema | Bourne End | 3 | 2 |
| Industrial Pipe Services 2003 | High Wycombe | 3 | 2 |
| Westronics | Reading | 3 | 6 |
| CLC Contractors | Camberley | 2 | 32 |
| Bam Construction | Hemel Hempstead | 2 | 16 |
| Sheffield Teaching Hospitals NHS Trust | Sheffield | 2 | 6 |
| Artelia Projects | London | 2 | 4 |
| FCC Recycling | Northampton | 2 | 3 |
| Creditcall | Bristol | 2 | 2 |
| DRF Consulting Engineers | Colchester | 2 | 2 |
| Irvine Grenson | Aylesbury | 2 | 2 |
| Monitor Cleaning Services | Northfleet | 2 | 2 |
| Scancross Environmental | Oxon | 2 | 2 |
| Telnik | Aylesbury | 2 | 2 |
| Capita Business Services | London | 1 | 121 |
| Kompan | Milton Keynes | 1 | 28 |
| British Telecommunications | London | 1 | 26 |
| AECOM Infrastructure & Environment | Basingstoke | 1 | 30 |
| Carter Jonas | Oxford | 1 | 21 |
| Steer Davies Gleave | London | 1 | 28 |
| Certas Energy | Warrington | 1 | 13 |
| Willmott Dixon Construction | Hitchin | 1 | 16 |
| Pellings | Barnet | 1 | 15 |
| Portakabin | Oxford | 1 | 14 |
| Toyota | Epsom | 1 | 12 |
| Mercer | London | 1 | 14 |
| Morgan Sindall Construction & Infrastructure | London | 1 | 11 |
| Montagu Evans | London | 1 | 8 |
| Tribal Education | Bristol | 1 | 8 |
| Skills Network | Selby | 1 | 9 |
| Facultatieve Technologies | Leeds | 1 | 8 |
| Nottingham Rehab | Coalville | 1 | 8 |
| Borras Construction | St Albans | 1 | 9 |
| Riverside Group | Speke | 1 | 6 |
| GM Coachworks | Newton Abbot | 1 | 5 |
| Go Train | Kent | 1 | 5 |
| WT Partnership | Croydon | 1 | 5 |
| 8X8 | Aylesbury | 1 | 4 |
| Knight Kavanagh & Page | Lancs | 1 | 4 |
| Morgan Sindall | London | 1 | 4 |
| Westminster Homecare | Slough | 1 | 31 |
| Thera Trust | Grantham | 1 | 5 |
| Chipside | Brinkworth | 1 | 5 |
| Care UK Community Partnerships | High Wycombe | 1 | 4 |
| CFH Docmail | Slough | 1 | 3 |
| Clue Computing | Bristol | 1 | 3 |
| Peopletoo | Nottingham | 1 | 3 |
| VP AV | Andover | 1 | 3 |
| Scancross | Oxon | 1 | 12 |
| Ia Glenister | Aylesbury | 1 | 5 |
| SLN | Aylesbury | 1 | 4 |
| Buckinghamshire New University | High Wycombe | 1 | 3 |
| Bucks Minibus Travel | High Wycombe | 1 | 3 |
| Contour Architecture | Berkhamsted | 1 | 3 |
| Latcham Direct | Bristol | 1 | 3 |
| Metro Dynamics | London | 1 | 3 |
| Tofields | Milton Keynes | 1 | 3 |
| TRN Train | Gateshead | 1 | 3 |
| Unboxed Consulting | Commercial Street London | 1 | 3 |
| Central High Rise | Nottingham | 1 | 3 |
| Carousel Buses | High Wycombe | 1 | 2 |
| Energy Assets | Livingston | 1 | 2 |
| Expert Property Care | Watford | 1 | 2 |
| Gilberts of Chesham | Chesham | 1 | 2 |
| Maydencroft | Hitchin | 1 | 2 |
| Network Rail | London | 1 | 2 |
| Nyas | Birkenhead | 1 | 2 |
| Seymour Harris Architecture | Birmingham | 1 | 2 |
| Remedy Recruitment Group | Loughton | 1 | 4 |