| Alan George Burns | Director | 3 Dec 2012 | 31 May 2019 | British | 50 years |
| Ashley Alexander Grist | Director | 9 Sept 2009 | 20 Oct 2010 | British | 60 years |
| Christopher Lindsay Christian | Secretary | 18 Apr 1996 | 14 Aug 1997 | British | - |
| Ciara Martha Lynch | Director | 2 Mar 2020 | 8 Dec 2020 | Irish | 57 years |
| David Arthur Jackson | Director | 1 Sept 1992 | 31 Aug 2000 | British | 85 years |
| Derek Davies | Director | 16 Aug 2010 | 14 Dec 2012 | British | 62 years |
| Douglas Malcolm Hurt | Director | 10 Feb 1999 | 31 Jan 2001 | British | 69 years |
| Edinburgh Pharmaceutical Industries Limited | Corporate Director | 31 Jan 2001 | 8 Dec 2020 | United Kingdom | - |
| George James Morrow | Director | 31 Jan 1997 | 10 Feb 1999 | American | 73 years |
| Glaxo Group Limited | Corporate Director | 31 Jan 2001 | 8 Dec 2020 | United Kingdom | - |
| Jacques Regean Lapionte | Director | 18 Apr 1994 | 31 Jan 1997 | Canadian | 79 years |
| James Borger | Director | 25 Feb 2019 | 2 Mar 2020 | American | 62 years |
| Jeffrey Royston Baxter | Director | 17 Jan 1997 | 10 Feb 1999 | British | 64 years |
| Joanna Susan Lecouilliard | Director | 10 Feb 1999 | 31 Jan 2001 | British | 62 years |
| John Michael Sadler | Director | 8 Oct 2020 | 29 Jul 2022 | British | 69 years |
| John Patrick Kearney | Director | 10 Feb 1999 | 19 Jul 1999 | British | 67 years |
| Jonathan Mark Bolton | Secretary | 1 Sept 1992 | 9 Jun 1994 | British | - |
| Jonathan Mark Bolton | Secretary | 14 Aug 1997 | 8 Apr 1998 | British | - |
| Michael John Bailey | Director | 1 Sept 1992 | 30 Apr 2001 | British | 83 years |
| Oleg Dubianskij | Director | 31 Jan 2017 | 13 Feb 2019 | Lithuanian | 53 years |
| Sandra Grace Marie Skelding | Secretary | 9 Jun 1994 | 18 Apr 1996 | British | - |
| Sean Patrick Lance | Director | 1 Sept 1992 | 18 Apr 1994 | Irish | 78 years |
| Simon Michael Bicknell | Secretary | 8 Apr 1998 | 10 Feb 1999 | British | - |
| Stephen John Powell | Director | 15 Sept 1995 | 10 Feb 1999 | British | 67 years |
| Victoria Anne Whyte | Secretary | 10 Feb 1999 | 8 Dec 2020 | British | - |