| Pfizer | Tadworth, Sandwich, Kent | 37 | 24 |
| Sandoz | Camberley, Surrey, Surrey Heath | 19 | 17 |
| Zentiva Pharma | London, Guildford, Surrey | 14 | 13 |
| Teva | Castleford, West Yorkshire | 20 | 19 |
| Accord | Barnstaple, North Devon | 18 | 21 |
| Thornton & Ross | Huddersfield, Nr Huddersfield | 17 | 11 |
| Mylan | Hatfield, Potters Bar | 14 | 4 |
| Fresenius Kabi | Runcorn | 12 | 13 |
| Drugsrus | Harrow, Northwood Hills, Northwood | 12 | 10 |
| Wockhardt | Wrexham, Clwyd | 11 | 9 |
| Martindale Pharma | High Wycombe, Romford, Wooburn Green | 13 | 4 |
| Ranbaxy | Hayes, London, Hillingdon | 13 | 3 |
| Tillomed Laboratories | Luton, Cambridgeshire | 12 | 5 |
| Baxter Healthcare | Thetford, Berkshire | 11 | 16 |
| Consilient Health | Richmond, Richmond on Thames, Surrey | 11 | 7 |
| Medac Pharma | Stirling, Sterling | 11 | 3 |
| Mercury Pharmaceuticals | London | 9 | 9 |
| Syri | South Ruislip, London | 9 | 9 |
| Aventis Pharma | Reading | 12 | 4 |
| Selective Supplies | Haywards Heath, West Sussex | 12 | 4 |
| Ferring Pharmaceuticals | West Drayton | 9 | 9 |
| Crescent Pharma | Basingstoke | 8 | 3 |
| Bowmed Ibisqus | Wrexham, Chirk | 6 | 6 |
| Glenmark Pharmaceuticals Europe | Watford, Harrow | 9 | 4 |
| Aspire Pharma | Petersfield | 9 | 9 |
| Novo Nordisk | Gatwick | 8 | 7 |
| Abbvie | Maidenhead, Windsor and Maidenhead | 7 | 9 |
| Focus Pharmaceuticals | London, Burton upon Trent | 7 | 4 |
| Intrapharm Laboratories | Maidenhead, Cookham Dean | 5 | 6 |
| Ennogen Healthcare | Dartford | 5 | 5 |
| Napp Pharmaceuticals | Cambridge | 9 | 5 |
| Novartis Pharmaceuticals | London, Frimley | 8 | 8 |
| Ipsen | Slough, Wrexham | 8 | 7 |
| Amarox | Harrow | 8 | 8 |
| Brown & Burk | Uxbridge, West London | 8 | 8 |
| Kent Pharma | Ashford, Swadlincote | 8 | 8 |
| Amgen | Cambridge, Cambrdige | 7 | 9 |
| Janssen Cilag | High Wycombe, Highwycombe | 7 | 7 |
| Celltrion Healthcare | Slough | 7 | 5 |
| Altan Pharma | Ware, None, Highland | 7 | 7 |
| Morningside Pharmaceuticals | Leicestershire, Loughborough | 6 | 5 |
| Eli Lilly | Basingstoke, Hants, Basingstoke and Deane | 6 | 7 |
| Kent Pharmaceuticals | Ashford, Kent | 6 | 6 |
| Glaxosmithkline | Brentford | 6 | 2 |
| Milpharm | South Ruislip | 6 | 4 |
| Cipla Eu | London, Addlestone | 6 | 6 |
| B Braun Medical | Sheffield, Chapeltown | 4 | 12 |
| Merck Sharp & Dohme | Hoddesdon | 4 | 7 |
| Synchrony Pharma | Hatfield, Stevenage | 4 | 2 |
| Panpharma | Liverpool | 7 | 4 |
| CST Pharma | Walsall | 7 | 7 |
| Roche Products | Welwyn Garden City, Welwyn Hatfield | 6 | 14 |
| Ucb Pharma | Slough | 6 | 8 |
| Hameln Pharmaceuticals | Gloucester | 5 | 7 |
| Merck Serono | Middlesex, Feltham | 5 | 6 |
| Rosemont Pharmaceuticals | Leeds | 5 | 4 |
| Qdem Pharmaceuticals | Cambridge | 5 | 2 |
| Bayer | Reading | 4 | 14 |
| Techdow Pharma England | Guildford | 4 | 3 |
| Hameln Pharma | Gloucester | 3 | 4 |
| Chiesi | Manchester | 3 | 3 |
| Norgine Pharmaceuticals | Uxbridge, Harefield | 3 | 3 |
| Torbay Pharmaceuticals | Paignton | 3 | 3 |
| Morningside Pharmaeuticals | Loughborough | 6 | 6 |
| Biogen | Maidenhead, Norden Road Maidenhead | 5 | 10 |
| Hfa Healthcare Products | Hampton in Arden | 4 | 9 |
| DR Reddys Laboratories | Beverley | 4 | 3 |
| Strandhaven | Ilford | 4 | 4 |
| Merck Sharp & Dohme MSD | Hoddesdon, Hertfordshire | 4 | 3 |
| Upjohn | Tadworth | 4 | 3 |
| Accord Healthcare | North Harrow | 4 | 2 |
| Medreich | Feltham | 4 | 2 |
| Bristol Laboratories | Berkhamstead | 4 | 4 |
| Essential Healthcare | Brentwood | 4 | 4 |
| Healthcare Pharma | Haslemere | 4 | 4 |
| Laboratorio Reig Jofre | Bideford | 4 | 4 |
| Lexon | Redditch | 4 | 4 |
| Macleods Pharma | Billingham | 4 | 4 |
| Manx Healthcare | Warwick | 4 | 4 |
| Medley Pharma | Bootle | 4 | 4 |
| Merck Sharpe & Dohme | Hoddesdon, Hertfordshire | 4 | 4 |
| Necessity Supplies | Northolt | 4 | 4 |
| Rivopharm | London | 4 | 4 |
| Sciecure Pharma | Guildford | 4 | 4 |
| Waymade | Basildon | 4 | 4 |
| Aspen Pharma Ireland | Maidenhead, County Dublin | 3 | 12 |
| Takeda | London, Kingdom Street London | 3 | 7 |
| Pharmacosmos | Berkshire, Reading | 3 | 6 |
| Vifor Pharma | London | 3 | 6 |
| Gilead Sciences | London | 3 | 6 |
| Daiichi Sankyo | Uxbridge, Gerrards Cross | 3 | 3 |
| Allergan | Marlow | 3 | 4 |
| Neon Healthcare | Ware, Hertfordshire | 3 | 2 |
| Aspen Pharmacare | Maidenhead | 3 | 3 |
| Leo Pharma | Hurley | 3 | 3 |
| Flynn Pharma | Stevenage | 2 | 10 |
| Alliance Pharmaceuticals | Chippenham | 2 | 6 |
| Martindale | Brentwood | 2 | 5 |
| Aguettant | Bristol | 2 | 2 |
| Glaxo Smithkline | Uxbridge, Middlesex | 2 | 2 |