| Leonardo | Edinburgh, London, Yeovil | 7 | 7 |
| Mott Macdonald | Croydon, Bristol, Sheffield | 7 | 60 |
| Qinetiq | Farnborough, Portsmouth, Cosham | 7 | 9 |
| Capita Business Services | Barnards Inn, Reading, London | 13 | 121 |
| Investigo | London | 7 | 22 |
| Centerprise | Basingstoke, Basingstoke and Deane | 6 | 48 |
| Explosive Learning Solutions | Didcot | 6 | 6 |
| Rheinmetall BAE Systems Land | Telford | 8 | 6 |
| KPMG | London, Greater London, Canary Wharf | 6 | 102 |
| Boeing Defence | Bristol | 6 | 6 |
| Devonport Royal Dockyard | Plymouth | 5 | 6 |
| Viasat | Aldershot | 5 | 5 |
| Envitia | Horsham, Gateshead | 4 | 4 |
| General Dynamics | South Wa, Gwent, Blackwood | 4 | 2 |
| Andreas Petsas & Sons Public | Nicosia | 4 | 4 |
| Computacenter | Hatfield, Southwark | 3 | 118 |
| BAE Systems Operations | Farnborough, Hants | 3 | 5 |
| BMT Defence & Security | Avon, Bath, London | 3 | 5 |
| Digi2Al | Hove, London | 3 | 3 |
| Babcock International Group | Portsmouth, Bristol | 3 | 2 |
| Aviation Spares & Repairs | Romsey, Test Valley | 3 | 3 |
| Colleges Partnership | Blandford | 3 | 3 |
| Marsh Plant Hire | Havant, Hampshire | 3 | 3 |
| Carbon60 | Luton, Fareham | 11 | 21 |
| BAE Systems Applied Intelligence | Guildford, Gloucester | 7 | 9 |
| Rtitb | Telford | 6 | 6 |
| Deloitte | London | 5 | 122 |
| LA International Computer Consultants | Stoke on Trent, Stoke-on-Trent | 5 | 85 |
| Konica Minolta Business Solutions | Basildon, Precedent Drive | 5 | 11 |
| Akhter Computers | Harlow | 4 | 15 |
| Marine Specialised Technology | Liverpool, Merseyside | 4 | 4 |
| Analox | Stokesley | 4 | 4 |
| Chemprotectsk Sro | Turcianske Teplice | 4 | 4 |
| Cunning Running Software | Romsey, Test Valley | 4 | 4 |
| Royal Air Forces Association | Leicester | 4 | 4 |
| STS Aviation Services | Birmingham | 4 | 4 |
| AECOM | St Albans, Bristol | 3 | 137 |
| PA Consulting Services | London | 3 | 54 |
| Gartner | Tamesis the Glanty Egham, Egham | 3 | 26 |
| Boxxe | York | 3 | 7 |
| 1Spatial Group | Cambridge | 3 | 5 |
| BAE Systems Surface Ships | Isle of Wight, Portsmouth | 3 | 11 |
| CMCA | Worcester, Preston | 3 | 7 |
| Amethyst Risk Management | Basingstoke | 3 | 2 |
| Blue Bear Systems Research | Oakley, Bedford | 3 | 3 |
| M Assessment Services | Stevenage | 3 | 3 |
| Public Group | London | 3 | 3 |
| Softcat | Marlow, Leeds | 2 | 176 |
| Insight Direct | Manchester, Uxbridge | 2 | 121 |
| Atkins | Epsom | 2 | 128 |
| Jacobs | Southwark, London | 2 | 62 |
| Serco | Sutton, Hart | 2 | 38 |
| Accenture | City of London, London | 2 | 30 |
| Atos IT Services | London, High Holborn | 2 | 29 |
| CGI IT | London | 2 | 21 |
| Mills & Reeve | London, Cambridge | 2 | 15 |
| Leonardo MW | Edinburgh, Yeovil | 2 | 30 |
| Oliver Wyman | London, Baker Street London | 2 | 8 |
| Storm Technologies | Watford | 2 | 7 |
| Radiocoms Systems | London, Ealing | 2 | 6 |
| Fidus Information Security | Cambridge | 2 | 3 |
| Fes Support Services | Stirling | 2 | 3 |
| SVGC | Salisbury | 2 | 3 |
| Millstream Penthouse Systems | Morden, Surrey | 2 | 5 |
| Level Peaks Associates | Hereford | 2 | 4 |
| Babcock Integrated Technology | Bristol, City of | 2 | 3 |
| Viking Arms | North Yorkshire, New York Industrial Estate | 2 | 2 |
| Colt Canada Corporation | Ontario, Kitchener | 2 | 2 |
| Engineering Universe for Building & Contracting Eubc | Swefieh, Amman | 2 | 2 |
| Freedom Training & Consultancy | Brighton, Eastbourne | 2 | 2 |
| Harvest Energy Aviation | London, Weybridge | 2 | 2 |
| Husys | Hythe, Feltham | 2 | 2 |
| Innovative Technology Projects | St Ives, Industrial Estate | 2 | 2 |
| Meta Mission Data | Great Malvern, Malvern | 2 | 2 |
| Msi Defence Systems | Norwich | 2 | 2 |
| Nsslglobal | Redhill, Merstham | 2 | 2 |
| Prolinx | Oxford | 2 | 2 |
| Rosemount Aerospace | Malvern | 2 | 2 |
| Sonic Communications | Bickenhill, West Midlands | 2 | 2 |
| TQ Education & Training | London | 2 | 2 |
| CDW | London | 5 | 71 |
| Air Charter Service | Surbiton | 5 | 2 |
| Tetra TECH Management Services | Leeds | 5 | 5 |
| Actica Consulting | Guildford | 4 | 15 |
| Nova Aerospace | Avon | 4 | 4 |
| Motor Oil Hellas Corinth Refineries | Marousi | 4 | 7 |
| Chapman Freeborn Airchartering | Gatwick | 4 | 4 |
| Vivo Defence Services | Newcastle upon Tyne | 4 | 4 |
| Certas Energy | Warrington | 3 | 13 |
| People Source Consulting | Bristol | 3 | 9 |
| I3Works | Glasgow | 3 | 5 |
| Carwood Motor Units | Coventry | 3 | 11 |
| Knowledgepool Group | Reading | 3 | 3 |
| Roke Manor Research | Romsey | 3 | 2 |
| Imd Consultancy | Avon | 3 | 2 |
| Marshall Aerospace & Defence Group | Cambridge | 3 | 2 |
| Gentex Helmet Integrated Systems | Letchworth Garden City | 3 | 3 |
| Iqarus | London | 3 | 3 |
| Road Transport Industry Training Board | Telford | 3 | 3 |
| Bytes Software Services | Leatherhead | 2 | 70 |