| Softcat | Marlow | 3 | 176 |
| Carl Zeiss | Cambourne, Cambridge | 2 | 22 |
| Gazprom Energy | Manchester | 2 | 18 |
| Ta Instruments A Division of Waters | Elstree | 2 | 3 |
| Balfour Beatty Kilpatrick | Motherwell | 2 | 2 |
| Bridge IT Recruitment | Salford, Leeds | 2 | 2 |
| Complete Network Services | Eccles, Salford | 2 | 2 |
| Engelmann & Buckham | Alton | 2 | 2 |
| Fairmont Recruitment | Manchester, Stockport | 2 | 2 |
| Fibre Extrusion Technology | Leeds | 2 | 2 |
| Flywire Payments | London | 2 | 2 |
| Icm Partners | Bury, Manchester | 2 | 2 |
| Syrris | Royston | 2 | 2 |
| Telecom Installation Services | Salford | 2 | 2 |
| Thermo Electron Karlsruhe | Karlsruhe | 2 | 2 |
| Creative Video Productions | Brentford | 3 | 6 |
| Illumina Cambridge | Cambridge | 2 | 20 |
| Bowmer Kirkland | Belper | 2 | 9 |
| Fei | Altrincham | 2 | 7 |
| British Gas Trading | Oxford | 2 | 5 |
| Dell Corporation | Bracknell Forest | 1 | 95 |
| Ipsos MORI | London | 1 | 55 |
| BDO | London | 1 | 32 |
| LA International Computer Consultants | Stoke on Trent | 1 | 85 |
| John Graham Construction | County Down | 1 | 21 |
| Seddon Construction | Bolton | 1 | 20 |
| Kier Construction | Sandy | 1 | 16 |
| Arrow County Supplies | Shrewsbury | 1 | 16 |
| Willmott Dixon Construction | Hertfordshire | 1 | 16 |
| Bruker | Coventry | 1 | 18 |
| F Parkinson | Blackpool | 1 | 9 |
| Harvey Nash | Manchester | 1 | 12 |
| Granicus Firmstep | London | 1 | 7 |
| Life Environmental Services | Bishops Stortford | 1 | 7 |
| Boxxe | North Yorkshrie | 1 | 7 |
| Linkedin Ireland Unlimited | County Dublin | 1 | 7 |
| J Greenwood Builders | Chadderton | 1 | 5 |
| Spie | London | 1 | 5 |
| Kortext | Bournemouth | 1 | 4 |
| Olympus Keymed | Southend on Sea | 1 | 4 |
| Inspectas Compliance | Birstall | 1 | 4 |
| Shimadzu | Milton Keynes | 1 | 5 |
| Bme Promise | Manchester | 1 | 4 |
| Mawasem | Stafford | 1 | 4 |
| Tata Consultancy Services | London | 1 | 4 |
| Ballicom | West Midlands | 1 | 3 |
| Invida | Solihull | 1 | 3 |
| Mbraun Inertgas Systeme | Garching | 1 | 3 |
| Herbert T Forrest | Bolton | 1 | 3 |
| Tet | London | 1 | 3 |
| DTP Group | Unknown | 1 | 3 |
| Into University Partnerships | Brighton | 1 | 3 |
| John Turner Construction Group | Preston | 1 | 2 |
| Omniscan | Wrexham | 1 | 2 |
| Trac Associates | Bury | 1 | 2 |
| Manchester & Cheshire Construction | Salford | 1 | 10 |
| Harrow Green Group | Newham | 1 | 2 |
| Kaberry Construction | Heywood | 1 | 2 |
| City Build Manchester | Preston | 1 | 2 |
| Oxford Instruments Asylum Research | Santa Barbara | 1 | 2 |
| Allianz Engineering Inspection Services | Guildford | 1 | 1 |
| Archer Technicoat | High Wycombe | 1 | 1 |
| Bespoke Textiles | London | 1 | 1 |
| Bibliu | London | 1 | 1 |
| Biocotech Americas LLC | Colorado | 1 | 1 |
| Blacksmiths Group | Cheltenham | 1 | 1 |
| Bme Promise Recruitment | Manchester | 1 | 1 |
| Cappfinity | Birmingham | 1 | 1 |
| Carbolite | Hope Valley | 1 | 1 |
| Carbolite Gero | High Peak | 1 | 1 |
| Collingham Catering Services | Wetherby | 1 | 1 |
| Cormet Oy | Vantaa | 1 | 1 |
| Cortest | Ohio | 1 | 1 |
| Desk Top Publishing Micro Systems | Leeds | 1 | 1 |
| Diondo | Hattingen | 1 | 1 |
| Fenn LLC | East Berlin | 1 | 1 |
| Greenfingers Landscapes | Blackburn | 1 | 1 |
| Harvey Nash Group | London | 1 | 1 |
| Helena Partnerships | St Helens | 1 | 1 |
| INS Sudlows Electrical | Manchester | 1 | 1 |
| Keepmoat Regeneration | Doncaster | 1 | 1 |
| LA International | Stoke-on-Trent | 1 | 1 |
| Lenovo Technology | Hook | 1 | 1 |
| Link Telemarketing B2B | Plymouth | 1 | 1 |
| MBC Building Contractor NW | Glossop | 1 | 1 |
| Neaspec | Haar | 1 | 1 |
| Oxford Instruments Nanotechnology Tools | Oxford | 1 | 1 |
| Q Lab Europe | Bolton | 1 | 1 |
| Quantum Design UK & Ireland | Leatherhead | 1 | 1 |
| Restaurant Design Associates | Tyne and Wear | 1 | 1 |
| Semilab | Budapest | 1 | 1 |
| Semilab Semiconductor Physics Laboratory | Budapest | 1 | 1 |
| Spe Contracts | Belfast | 1 | 1 |
| Sterling Relocation | Northolt | 1 | 1 |
| Studiosity | Coleman County | 1 | 1 |
| Sudlows Enterprise Services | Manchester | 1 | 1 |
| Tescan | Girton | 1 | 1 |
| Ukri STFC | Harwell | 1 | 1 |
| Uniware Systems | Wallingford | 1 | 1 |
| Viewpulse | London | 1 | 1 |