| Roche Diagnostics | Burgess Hill, West Sussex, Mid Sussex | 36 | 13 |
| Roche Diagnostic | Burgess Hill | 1 | 2 |
| Sarstedt | Leicester, Bridge of Weir | 7 | 7 |
| Life Technologies | Paisley, Paisley | 8 | 35 |
| Scientific Laboratory Supplies | Nottingham, Hessle, East Riding of Yorkshire | 8 | 13 |
| Bio Rad Laboratories | Watford, Hemel Hempstead | 8 | 11 |
| VWR | Lutterworth, Leicestershire | 8 | 15 |
| Promega | Southampton, Test Valley | 8 | 6 |
| Fujifilm | Bedford, Bedfordshire | 5 | 2 |
| Qiagen | Manchester, Crawley | 8 | 11 |
| Cambridge Bioscience | Cambridge | 7 | 7 |
| Greiner Bio One | Stonehouse, Stroud | 7 | 7 |
| Beckman Coulter | High Wycombe | 6 | 15 |
| Alpha Laboratories | Eastleigh | 6 | 6 |
| Cellpath | Edinburgh, Newtown, Powys | 5 | 2 |
| PCR Biosystems | London, Archway Road London | 5 | 2 |
| Abbott Laboratories | Maidenhead, Berkshire, Windsor and Maidenhead | 4 | 14 |
| Siemens Healthcare Diagnostics | Camberley, Surrey, Surrey Heath | 4 | 9 |
| Keymed Medical & Industrial Equipment | Southend on Sea, Essex | 4 | 4 |
| Philips Electronics | Guildford, The Philips Centre, Surrey | 4 | 3 |
| Becton Dickinson | Wokingham | 6 | 20 |
| Fisher Scientific | Loughborough | 6 | 14 |
| New England Biolabs | Hitchin | 6 | 5 |
| Bio Techne | Abingdon | 6 | 2 |
| Sysmex | Milton Keynes, Buckinghamshire | 5 | 7 |
| Illumina Cambridge | Great Abington, Cambridge, Granta Park Great Abington | 4 | 20 |
| Wolf Laboratories | York | 4 | 11 |
| Agilent Technologies | Winnersh, Cheadle | 4 | 4 |
| Miltenyi Biotec | Bisley, Woking | 4 | 3 |
| Labtech | Uckfield, Heathfield | 4 | 3 |
| Eurogentec | Southampton Hampshire, Southampton | 4 | 3 |
| Oxford Biosystems | Abingdon, Oxon | 4 | 3 |
| Randox Laboratories | Crumlin, Diamond Road Crumlin Northern | 4 | 4 |
| Leica Microsystems | Cambridge, Milton Keynes | 3 | 16 |
| Haemonetics | Harrow, South Lanarkshire | 3 | 6 |
| Grifols | London, Cambridge | 3 | 4 |
| Sectra | Essex, Bishops Stortford, Hertfordshire | 3 | 4 |
| Ortho Clinical Diagnostics | Bridgend, Marlow | 3 | 3 |
| Biomérieux | Basingstoke, Hampshire | 3 | 3 |
| Change Healthcare UK Holdings | London, Brent Cross Gardens | 3 | 3 |
| Eurofins Biomnis | Wolverhampton, Hampshire | 3 | 3 |
| Stratech Scientific | Ely | 6 | 2 |
| Hologic | Wythenshawe | 4 | 7 |
| Thermo Fisher Diagnostics | Altrincham, Milton Keynes | 4 | 4 |
| Don Whitley Scientific | Bingley | 4 | 5 |
| Una Health | Stoke on Trent | 4 | 2 |
| VH Bio | Gateshead | 4 | 2 |
| Tecrea | London | 4 | 2 |
| Abbott Rapid Diagnostics | Stockport | 4 | 4 |
| Abcam | Cambridge | 4 | 4 |
| Amenarini Diagnostics | Wokingham, Berkshire | 4 | 4 |
| Ams Biotechnology Europe | Abingdon | 4 | 4 |
| Anachem Mettler Toledo | Leicester | 4 | 4 |
| Biolegend | London | 4 | 4 |
| Cambio | Cambridge | 4 | 4 |
| Eppendorf | Stevenage | 4 | 4 |
| Formedium | Hunstanton | 4 | 4 |
| Li Cor | Cambridge | 4 | 4 |
| MP Biomedicals Sarl | Illkirch | 4 | 4 |
| Newmarket Scientific | Kennett | 4 | 4 |
| Starlab | Milton Keynes | 4 | 4 |
| Stemcell Technologies Sarl | Grenoble | 4 | 4 |
| Thistle Scientific | Glasgow | 4 | 4 |
| Perkinelmer LAS | Beaconsfield | 3 | 7 |
| Thermo Electron Manufacturing | Altrincham, Hemel Hempstead | 3 | 4 |
| Thermofisher Scientific | Newport | 3 | 3 |
| Euroimmun | London, The Broadway Wimbledon London | 3 | 2 |
| Generon | Maidenhead | 3 | 3 |
| Agena Bioscience | Hamburg | 3 | 2 |
| Quantumdx Group | Newcastle upon Tyne | 3 | 2 |
| Enzo Life Sciences | Exeter | 3 | 2 |
| Takara Bio Europe Sas | Avenue President Kennedy | 3 | 2 |
| Ausdiagnostics | Chesham | 3 | 3 |
| Bgi Genomics | London | 3 | 3 |
| Bioconnections | Wetherby, Market Place Wetherby | 3 | 3 |
| Europlaz Technologies | Essex, Southminster | 3 | 3 |
| Genefirst | Abingdon | 3 | 3 |
| Gilson | Luton | 3 | 3 |
| Intertek Testing & Certification | Essex, Brentwood | 3 | 3 |
| Luminex Corporation | Texas | 3 | 3 |
| Merck Life Science | | 3 | 3 |
| Oxford Immunotec | Abingdon, Oxon | 3 | 3 |
| Peprotech | Hammersmith | 3 | 3 |
| Primerdesign | Chandlers Ford | 3 | 3 |
| Techno Path Distribution | Ballina | 3 | 3 |
| Insight Direct | Sheffield | 2 | 121 |
| XMA | Wilford, Nottingham | 2 | 93 |
| Dell Corporation | Bracknell | 2 | 95 |
| IBM | Portsmouth | 2 | 34 |
| Kainos Software | Belfast | 2 | 16 |
| Bruker | Coventry | 2 | 18 |
| GE Medical Systems | Chalfont St Giles | 2 | 13 |
| Hamilton Sales & Service | Birmingham | 2 | 7 |
| Egton Medical Information Systems | Rawdon, Leeds | 2 | 8 |
| Hospital Services | Belfast | 2 | 8 |
| Siemens Healthcare | Camberley | 2 | 6 |
| System C Healthcare | Maidstone | 2 | 5 |
| Cepheid | Wooburn Green | 2 | 6 |
| Faculty Science | London | 2 | 7 |
| Mast Group | Liverpool, Bootle | 2 | 4 |