| BONFIELD, Peter William, Professor ACTIVE | Director | 17 Jul 2018 | | England | June 1963 | 309, Regent Street, London, W1B 2UW |
| WILMOT, Ian Michael ACTIVE | Director | 01 Feb 2024 | | England | September 1963 | 309, Regent Street, London, W1B 2UW |
| DAVIES, Richard William RESIGNED | Secretary | 04 Feb 2015 | 30 Sep 2017 | | | University Of Westminster, 2nd Floor Cavendish House, 101 New Cavendish Street, London, W1W 6UW, England |
| MAINSTONE, Carole RESIGNED | Secretary | 06 Jun 2000 | 10 Aug 2009 | | | 59 Church Crescent, London, N3 1BL |
| STRANG, Alan Thomas RESIGNED | Secretary | 26 May 1994 | 06 Jun 2000 | | | 5 Windmill Close, Horsham, West Sussex, RH13 6BY |
| THOMSON, Cameron RESIGNED | Secretary | 10 Aug 2009 | 30 Jan 2015 | | | 309, Regent Street, London, W1B 2UW |
| E P S SECRETARIES LIMITED RESIGNED | Nominee Secretary | 14 Dec 1993 | 26 May 1994 | | | 50 Stratton Street, London, W1X 6NX |
| CAPPOCK, John Bernard RESIGNED | Director | 17 Jul 2018 | 31 Oct 2023 | England | October 1960 | 309, Regent Street, London, W1B 2UW |
| COPLAND, Geoffrey Malcolm, Dr RESIGNED | Director | 26 May 1994 | 31 Jul 2007 | United Kingdom | June 1942 | 24 The Broadway, Gustard Wood Wheathampstead, St Albans, Hertfordshire, AL4 8LN |
| HARDING, Philip RESIGNED | Director | 06 Feb 2001 | 14 May 2009 | England | November 1960 | Eastcoates, Latimer Road, Barnet, Hertfordshire, EN5 5NF |
| MEGSON, Graham Martin, Professor RESIGNED | Director | 20 Oct 2017 | 18 Sep 2018 | England | March 1963 | 309, Regent Street, London, W1B 2UW |
| PETTS, Geoffrey Eric, Professor RESIGNED | Director | 01 Aug 2007 | 24 Oct 2017 | United Kingdom | March 1953 | 309, Regent Street, London, W1B 2UW |
| STRANG, Alan Thomas RESIGNED | Director | 26 May 1994 | 06 Jun 2000 | | September 1944 | 5 Windmill Close, Horsham, West Sussex, RH13 6BY |
| WEBB, Michael Bernard RESIGNED | Director | 31 Oct 2011 | 31 May 2017 | England | September 1964 | 309, Regent Street, London, W1B 2UW |
| MIKJON LIMITED RESIGNED | Nominee Director | 14 Dec 1993 | 26 May 1994 | | | 50 Stratton Street, London, W1X 5FL |