| Baxter Healthcare | Thetford, Newbury, Compton | 12 | 16 |
| Pfizer | Tadworth, Sandwich, Kent | 13 | 24 |
| Janssen Cilag | High Wycombe, Highwycombe | 10 | 7 |
| Softcat | Marlow | 9 | 176 |
| Milpharm | South Ruislip, Ruislip, Middlesex | 8 | 4 |
| Northgate Public Services | Madingley, Worcester, Hemel Hempstead | 6 | 44 |
| Sandoz | Camberley, Surrey, Surrey Heath | 14 | 17 |
| Cipla Eu | London, Addlestone | 10 | 10 |
| Novartis Pharmaceuticals | London | 9 | 8 |
| Zentiva Pharma | Guildford, London | 8 | 13 |
| Mylan | Hatfield, Potters Bar, Herts | 8 | 4 |
| Ics Operations | London, Greater London, North | 6 | 3 |
| Bristol Laboratories | Berkhamstead, Berkhamsted, Hertfordshire | 6 | 6 |
| Lexon | Redditch, East Redditch | 6 | 6 |
| Bunzl | London, Epsom, Tamworth | 4 | 18 |
| Accord | Barnstaple, Devon | 20 | 21 |
| Thornton & Ross | Huddersfield, Nr Huddersfield | 18 | 11 |
| Abbvie | Maidenhead, Windsor and Maidenhead | 9 | 9 |
| Amarox | Harrow, Middlesex | 9 | 9 |
| Drreddys Laboratories | Beverley, East Yorkshire | 9 | 9 |
| HP Inc | Bracknell, Reading | 8 | 8 |
| Selective Supplies | Haywards Heath, West Sussex | 8 | 4 |
| Blackpool Teaching Hospitals NHS Trust | Blackpool, Blackpoo | 8 | 4 |
| Aspire Pharma | Petersfield, Hampshire | 8 | 8 |
| Brown & Burk | Uxbridge, Middlesex | 8 | 8 |
| Kent Pharma | Ashford, Kent | 8 | 8 |
| Merck Serono | Feltham, Middlesex | 7 | 6 |
| Deloitte | London, Greater London, New Street Square London | 6 | 122 |
| Pricewaterhousecoopers | London, Newscastle | 6 | 75 |
| Ipsen | Slough, Wrexham | 6 | 7 |
| Martindale Pharma | High Wycombe | 6 | 4 |
| Eli Lilly | Basingstoke, Hants, Basingstoke and Deane | 6 | 7 |
| Novo Nordisk | Gatwick, West Sussex | 6 | 7 |
| Medac Pharma | Stirling, Sterling | 6 | 3 |
| Day Lewis Medical | Croydon, Surrey | 6 | 6 |
| Laboratorio Reig Jofre | Bideford, Devon | 6 | 6 |
| Nuffield Health | Epsom | 5 | 5 |
| Kings College London | Strand, London | 5 | 4 |
| Glenmark Pharmaceuticals Europe | Watford, Harrow | 5 | 4 |
| Horder Healthcare | Crowborough | 5 | 2 |
| Kims Hospital | Maidstone | 5 | 2 |
| Ramsay Health Care UK Operations | London | 5 | 2 |
| New Victoria Hospital | Kingston upon Thames, London | 5 | 5 |
| One Healthcare Partners | London | 5 | 5 |
| Spencer Private Hospitals | Dover | 5 | 5 |
| Syri | South Ruislip, Ruislip | 5 | 5 |
| Pharmacosmos | Reading, Berkshire | 4 | 6 |
| Language Empire | Rochdale | 4 | 4 |
| Spire Healthcare | London | 4 | 3 |
| Aspen Healthcare | London | 4 | 3 |
| Bio Products Laboratory | Elstree | 4 | 3 |
| Inivos | London, Kings Lynn | 4 | 4 |
| Circle Health Holdings | London | 4 | 4 |
| Ecolab | Northwich | 4 | 4 |
| New Foscote Hospital | Banbury, London | 4 | 4 |
| Boc | Guilford, Guildford, Research Park Guildford | 3 | 34 |
| Moorhouse Consulting | London, City of London | 3 | 13 |
| Mountain Healthcare | Essex, Finchingfield, Braintree | 3 | 8 |
| Spectrum Community Health CIC | West Yorkshire, Hebble Wharf, Wakefield | 3 | 4 |
| Peer Power Youth | London, Embankment | 3 | 3 |
| Virgin Care Services | Greater London, Runcorn, Warrington | 3 | 3 |
| Teva | Castleford | 16 | 19 |
| Ranbaxy | Hayes, Hillingdon | 9 | 3 |
| Amgen | Cambridge | 8 | 9 |
| Aventis Pharma | Reading | 8 | 4 |
| Clarendon Dental Spa | Leeds | 8 | 8 |
| Morningside Pharmaeuticals | Loughborough | 8 | 8 |
| Roche Products | Welwyn Garden City, Welwyn Hatfield | 7 | 14 |
| Astrazeneca | Luton | 7 | 3 |
| Mersey Care NHS Trust | Liverpool, Prescot | 7 | 7 |
| Fresenius Kabi | Runcorn | 6 | 13 |
| British Red Cross | London, Paisley | 6 | 11 |
| Ucb Pharma | Slough | 6 | 8 |
| Tillomed Laboratories | Luton | 6 | 5 |
| Napp Pharmaceuticals | Cambridge | 6 | 5 |
| Panpharma | Liverpool | 6 | 4 |
| Celltrion Healthcare | Slough | 6 | 5 |
| Bridgewater Community Healthcare NHS Trust | Warrington | 6 | 6 |
| CST Pharma | Walsall | 6 | 6 |
| Insight Direct | London, Sheffield | 5 | 121 |
| Ferring Pharmaceuticals | West Drayton | 5 | 9 |
| Wockhardt | Wrexham | 5 | 9 |
| Drugsrus | Harrow | 5 | 10 |
| Biogen | Maidenhead, Norden Road Maidenhead | 5 | 10 |
| Merck Sharp & Dohme MSD | Hoddesdon, Hertfordshire | 5 | 3 |
| Piramal Critical Care | West Drayton | 5 | 2 |
| Necessity Supplies | Northolt | 5 | 5 |
| Newton Europe | Abingdon, Vale of White Horse | 4 | 11 |
| Mercury Pharmaceuticals | London | 4 | 9 |
| Takeda | London, Kingdom Street London | 4 | 7 |
| Consilient Health | Richmond | 4 | 7 |
| Vifor Pharma | London | 4 | 6 |
| DHL Supply Chain | Milton Keynes, Bracknell | 4 | 6 |
| Shire Pharmaceuticals | London | 4 | 5 |
| Hfa Healthcare Products | Hampton in Arden | 4 | 9 |
| Gilead Sciences | London | 4 | 6 |
| Octapharma | Manchester | 4 | 3 |
| Allergan | Marlow | 4 | 4 |
| Focus Pharmaceuticals | London | 4 | 4 |
| Crescent Pharma | Basingstoke | 4 | 3 |