| Rank | Company, City of Head Office (Country) | |
| |
| 1 |  Siemens plc in Bracknell | |
| 2 | Northern Foods PLC in Leeds | |
| 4 |  Stolt Offshore M.S. Limited in Aberdeen | |
| 5 | Kodak Ltd. in Hemel Hempstead | |
| 7 | Endress + Hauser Investments Ltd in Manchester | |
| 8 | Cardiothoracic Centre Liverpool N H S Trust in Liverpool | |
| 9 | Meggitt P.L.C. in Wimborne | |
| 10 | Ultra Electronics Holdings PLC in Greenford | |
|
|
| 11 | Depuy International Ltd in Leeds | |
| 12 | Convatec Ltd in Deeside | |
| 13 | Parker Hannifin PLC in Barnstaple | |
| 14 | Vitec Group (The) PLC in Kingston-upon-Thames | |
| 16 | Crookes Healthcare Ltd in Nottingham | |
| 17 | Renishaw PL in Wotton-Under-Edge | |
| 18 | Johnson & Johnson Medical Ltd in Ascot | |
| 19 | Keymed (Medical & Industrial Equipment) Ltd in Southend-On-Sea | |
| 20 | Siemens VDO Automotive Ltd. in Birmingham | |
| 21 | GE Medical Systems Ltd. in Bedford | |
| 22 | Oxford Magnet Technology Ltd in Witney | |
| 23 | Nikon UK Ltd in Thames | |
| 24 | Gyrus Group PLC in St Mellons | |
| 25 | Derbyshire Chamber and Business Link in Chesterfield | |
| 26 |  Zimmer Ltd in Swindon | |
| 27 | W & J Dunlop Ltd in Dumfries | |
| 28 | Ferraris Group PLC in Trinity Park Solihull | |
| 29 | Medtronic Ltd in Watford | |
| 30 | Norbain PLC in Wokingham | |
| 31 | Thales Optronics Ltd. in Glasgow | |
| 32 | Dedicated Microcomputers Group Ltd. in Manchester | |
| 33 | Integrated Technologies Ltd in Ashford | |
| 34 | Anritsu Ltd. in Luton | |
| 35 | Essilor Ltd in Bristol | |
| 36 | Shiloh Healthcare Ltd in Oldham | |
| 37 | Perkin Elmer Ltd in Beaconsfield | |
| 38 | Quantel Ltd in Newbury | |
| 39 | Carl Zeiss in Welwyn Garden City | |
| 40 | Baxter Healthcare Ltd in Thetford | |
| 41 | Ranco Controls Ltd in Plymouth | |
| 42 | Bristol Myers Squibb International Ltd in Uxbridge | |
| 43 | British Aerospace Defence Systems Ltd in Christchurch | |
| 44 | IFR Ltd in Stevenage | |
| 45 | Portex Ltd in Hythe | |
| 46 | Invensys Energy Metering Ltd in London | |
| 47 | Schlumberger Industries-Metflex Ltd in Blackburn | |
| 48 | James Halstead Ltd in Manchester | |
| 49 | Otter Controls Ltd in Buxton | |
| 50 | Isotron PLC in Swindon | |
| 51 | Spirax- Sarco Ltd in Cheltenham | |
| 52 | Edwards High Vacuum International Ltd in Crawley | |
| 53 | Magna Interior Systems Ltd in Maidstone | |
| 54 | Jeavons Engineering Ltd in Tipton | |
| 55 | Servomex Group Ltd in Crowborough | |
| 56 | Elmwood Sensors Ltd in Shields | |
| 57 | Gardiner Security Ltd in Rochdale | |
| 58 | ABB Automations in Stonehouse | |
| 59 | Wandel & Goltermann Ltd in Plymouth | |
| 60 | Stafford Miller Ltd in Welwyn Garden City | |
| 61 | BMH Chronos Richardson Ltd in Nottingham | |
| 62 | Emerson Process Management/Fisher-Rosemount in Regis | |
| 63 | Leo Electron Microscopy Ltd in Cambridge | |
| 64 | Chiron Diagnostics Ltd in Sudbury | |
| 65 | Clement Clarke International Ltd in Harlow | |
| 66 | Foxboro GB Ltd in Crawley | |
| 67 | Laser-Scan Holdings PLC in Cambridge | |
| 68 | Servelec Ltd in Sheffield | |
| 69 | IGE Medical Systems Ltd in Slough | |
| 70 | Philip Harris PLC in Leistercher | |
| 71 | Minolta Ltd in Milton Keynes | |
| 72 | Morse Controls Ltd in Basildon | |
| 73 | Norbar Torque Tools Ltd in Banbury | |
| 74 | Casella Group in Bedford | |
| 75 | Beiersdorf UK Ltd in Birmingham | |
| 76 | Consilium Security Systems Plc in Loughton | |
| 77 | Cyberlife Technology Ltd in Cambridge | |
| 78 | Francis Barker Pyser SGI Ltd in Edenbridge | |
| 79 | Kimal PLC in Uxbridge | |
| 80 | Fenn Engineering Ltd in London | |
| 81 | P & R Group Ltd in Merseyhide | |
| 82 | Rexam Coated Products Ltd in Runcorn | |
| 83 | Allenwest Electrical Ltd in Brighton | |
| 84 | Hypoguard Ltd in Woodbridge | |
| 85 | Fischer & Porter Ltd in Workington | |
| 86 | Isolated Systems Ltd in Heanor | |
| 87 | LEEC Limited in Nottingham | |
| 88 | Polaroid Ltd in St Albans | |
| 89 | PG Technology Ltd in Mitcham | |
| 90 | Trumeter Co Ltd in Radcliffe | |
| 91 | Rayner Services Ltd in Leeds | |
| 92 | SDL Queensgate Ltd in Bracknell | |
| 93 | Rigby-Maryland (Stainless) Ltd in Liversedge | |
| 94 | Rolex Watch Co Ltd in Bexley | |
| 95 | Mettler Toledo Ltd in Leicester | |
| 96 | Optoplast Manufacturing Co Ltd in Liverpool | |
| 97 | MFC Survival Ltd in Tonypandy | |
| 98 | Micromass UK Ltd in Manchester | |
| 99 | Gill Instruments Ltd in Lymington | |
| 100 | Gowrings Mobility Ltd in Newbury | |
| | |
| | | Minimum annual sales necessary to enter this table: 50 Million Euro |
| |
