| CULLEN, Timothy Edward ACTIVE | Secretary | 20 Apr 2015 | | | | 8 Manchester Square, London, W1U 3PH |
| LONG, Andrew Michael ACTIVE | Director | 04 Dec 2008 | | England | April 1971 | 8 Manchester Square, London, W1U 3PH |
| RUBIN, Andrew Keith ACTIVE | Director | 20 May 2010 | | England | January 1965 | 8, Manchester Square, London, W1U 3PH, United Kingdom |
| CAMPBELL, Patrick James RESIGNED | Secretary | 01 Jan 2005 | 20 Apr 2015 | | | 8 Manchester Square, London, W1U 3PH |
| HYDE, John Derek Gregory RESIGNED | Secretary | 03 Oct 1994 | 15 Jul 2002 | | | Tynesdale 19 Norton Road, Letchworth, Hertfordshire, SG6 1AA |
| STEVENS, Richard Anthony RESIGNED | Secretary | 15 Jul 2002 | 01 Jan 2005 | | | 5 Desborough Drive, Tewin Wood, Welwyn, Hertfordshire, AL6 0HQ |
| STEVENS, Richard Anthony RESIGNED | Secretary | | 03 Oct 1994 | | | 5 Desborough Drive, Tewin Wood, Welwyn, Hertfordshire, AL6 0HQ |
| CAMPBELL, Patrick James RESIGNED | Director | 01 Jan 2005 | 20 May 2010 | United Kingdom | April 1950 | 8 Manchester Square, London, W1U 3PH |
| CARVER, John Antony RESIGNED | Director | 03 Apr 2017 | 28 Feb 2018 | United Kingdom | August 1961 | 8 Manchester Square, London, W1U 3PH |
| DAVIES, Carl Stewart RESIGNED | Director | 30 Nov 2012 | 13 Aug 2019 | England | October 1968 | 8, Manchester Square, London, W1U 3PH, United Kingdom |
| GODDEN, Jonathan Mark RESIGNED | Director | 11 Oct 2011 | 01 Jun 2017 | United Kingdom | February 1978 | 8 Manchester Square, London, W1U 3PH |
| HIBBERT, Gary Nicholas RESIGNED | Director | 20 May 2010 | 19 Mar 2012 | United Kingdom | July 1963 | 8, Manchester Square, London, W1U 3PH, United Kingdom |
| KEYSER, Anthony John De RESIGNED | Director | | 31 Dec 2001 | | September 1934 | 2 Constable Close, London, NW11 6TY |
| NURSE, Katrina Lesley RESIGNED | Director | 02 Jan 2019 | 30 Sep 2020 | England | May 1971 | 8, Manchester Square, London, England And Wales, W1U 3PH, United Kingdom |
| SINCLAIR, Jonathan Stuart RESIGNED | Director | 31 Mar 2004 | 31 Dec 2008 | | January 1962 | The Pentland Centre Lakeside East, Lakeside Squires Lane, Finchley Central, London, N3 2QL |
| STEPHENSON, Christopher RESIGNED | Director | 03 Apr 2017 | 23 Apr 2018 | United Kingdom | April 1970 | 8, Manchester Square, London, England And Wales, W1U 3PH, United Kingdom |
| STEVENS, Richard Anthony RESIGNED | Director | | 01 Jan 2005 | | August 1943 | 5 Desborough Drive, Tewin Wood, Welwyn, Hertfordshire, AL6 0HQ |
| WEBSTER, Nicholas Peter Hamilton RESIGNED | Director | 31 Dec 2001 | 31 Mar 2004 | | March 1944 | Yew Tree Cottage, 40 Little Gaddesden, Berkhamsted, Hertfordshire, HP4 1PQ |