| HILL, Martin ACTIVE | Secretary | 11 Apr 2007 | | | | 4 Tachbrook Road, Uxbridge, Middlesex, UB8 2QS |
| CAMPLIN, Giles, Dr ACTIVE | Director | 23 Jul 1996 | | United Kingdom | August 1947 | 67 Gordon Road, London, SE15 5AF |
| EISSING, Johannes Walter Ewald ACTIVE | Director | 07 Jul 2015 | | Germany | September 1964 | 25, Gilbertstrasse, Hamburg, 22767, Germany |
| FORD, Daniel ACTIVE | Director | 16 Jan 2025 | | United Kingdom | September 1992 | 6 Bramley Court, Stavely Way, Gamston, Nottinghamshire, NG2 6UH, United Kingdom |
| GOTTLIEB, Gregory Charles Ross ACTIVE | Director | 26 Jun 2014 | | England | November 1959 | 71-75, Shelton Street, Covent Garden, London, WC2H 9JQ, United Kingdom |
| HAYCOCK, Stuart John ACTIVE | Director | 21 Jul 2015 | | United Kingdom | August 1958 | 51, South Crescent, Southend-On-Sea, SS2 6TB, England |
| HILL, Martin ACTIVE | Director | 15 Apr 2003 | | England | October 1961 | 4, Tachbrook Road, Uxbridge, Middlesex, UB8 2QS, England |
| SHRIMPTON, Alan Thomas ACTIVE | Director | 24 May 2025 | | England | June 1954 | 2, The Street, North Nibley, Dursley, GL11 6DW, England |
| DORREEN, Adrian Luke RESIGNED | Secretary | 20 Jan 1993 | 20 Jan 1993 | | | 11 St Phillips Road, Surbiton, Surrey, KT6 4DU |
| FLANAGAN, Martin RESIGNED | Secretary | 25 Jul 2005 | 11 Apr 2007 | | | The Lighthouse, Barton Road, Keinton Mandeville, Somerset, TA11 6EA |
| RENTELL, Michael Ernest RESIGNED | Secretary | | 25 Jul 2005 | | | 6 Kings Road, Cheriton, Folkestone, Kent, CT20 3LG |
| ADAMS, Paul Anthony RESIGNED | Director | 11 Feb 2012 | 02 Apr 2014 | United Kingdom | March 1965 | 102, Fell Road, Westbury, Wiltshire, BA13 2GP, England |
| ADAMS, Paul Antony RESIGNED | Director | | 21 Jul 1993 | | March 1965 | 41 Barnes Wallis Way, Churchdown, Gloucester, Gloucestershire, GL3 2TR |
| BANNAN, Christine Edwina RESIGNED | Director | 07 Feb 2002 | 24 Apr 2008 | | April 1953 | 67 Gordon Road, London, SE15 2AF |
| CHADBURN, Richard Howard RESIGNED | Director | | 23 Jan 2024 | United Kingdom | July 1935 | 3 The Barns Puttenham Lane, Shackleford, Godalming, Surrey, GU8 6BU |
| CHEESEMAN, Ian Clifford RESIGNED | Director | | 26 Apr 1994 | | June 1926 | Abbey View, Valley Road Tarrant Keynston, Blandford, Dorset, DT11 9JE |
| CHRISTOPHER, John Robin RESIGNED | Director | 24 Jun 2002 | 25 Jul 2005 | United Kingdom | August 1956 | 104 Bearlands, Wotton Under Edge, Gloucestershire, GL12 7SB |
| DALY, Neil Edward RESIGNED | Director | 24 Apr 2002 | 25 Jul 2005 | | January 1973 | 14 Main Street, Garforth, Leeds, Yorkshire, LS25 1EY |
| DAVIE, Paul Eric Hill RESIGNED | Director | | 23 Nov 1993 | | February 1962 | 11 Brook Road, Surbiton, Surrey, KT6 5DB |
| DONALDSON, Ian Travis RESIGNED | Director | | 24 Apr 2008 | | May 1935 | 112 Buckingham Gardens, Hurst Park, Molesey, Surrey, KT8 1TN |
| DORREEN, Adrian Luke RESIGNED | Director | | 29 May 1993 | | January 1954 | 11 St Phillips Road, Surbiton, Surrey, KT6 4DU |
| FANCOURT, Michael St John RESIGNED | Director | 20 Jan 1993 | 14 Jun 2007 | | May 1925 | The Endshed 6 Solent Avenue, Lymington, Hampshire, SO41 3SD |
| FANSHAWE, William David RESIGNED | Director | 07 Feb 2002 | 04 Jan 2008 | Gb-England | October 1971 | Hunters Moon, Bagshot, Stype, Hungerford, Berkshire, RG17 0RG |
| FLANAGAN, Martin RESIGNED | Director | 25 Jul 2005 | 11 Apr 2007 | | August 1961 | The Lighthouse, Barton Road, Keinton Mandeville, Somerset, TA11 6EA |
| GILLETT, John David RESIGNED | Director | | 13 Oct 1995 | | September 1913 | Herons Mead, Abbotsbrook, Bourne End, Bucks, SL8 5QS |
| GINGELL, John, Air Chief Marshal Sir RESIGNED | Director | 26 Apr 1994 | 10 Dec 2009 | | February 1925 | Quarry House Tucking Mill, Tisbury, Salisbury, Wiltshire, SP3 6NS |
| GOTTLIEB, Gregory Charles Ross RESIGNED | Director | 04 May 1995 | 23 Apr 2013 | United Arab Emirates | November 1959 | None Available, None Available, Abu Dhabi, Uae, United Arab Emirates |
| HARRIS, Anthony David RESIGNED | Director | 03 Nov 2000 | 18 Apr 2010 | | October 1941 | 21 Harlequin Court, 6 Thomas More Street, London, E1W 1AR |
| HARTCUP, Guy Rider Monyns RESIGNED | Director | | 31 Dec 1993 | | May 1919 | 16 Temple Sheen, East Sheen, London, SW14 7RP |
| HILLS, Nigel Graeme Raymond RESIGNED | Director | 04 Sep 2007 | 14 Apr 2025 | England | October 1963 | 4 Grammar Court, Mill Lane, North Chailey, Lewes, East Sussex, BN8 4EG, England |
| HITHERSAY, Richard Gordon Derek RESIGNED | Director | | 29 May 1993 | | September 1930 | First Floor Flat 44 Westbourne Terrace, Paddington, London, W2 3UH |
| HOCHSTETLER, Ronald De Wayne RESIGNED | Director | 17 Jun 2003 | 20 May 2021 | United States | June 1954 | 3555, South Stafford Street, Arlington, Virginia 22206, United States |
| KHOURY, Gabriel, Prof RESIGNED | Director | 20 Jan 1993 | 20 May 2015 | England | August 1947 | Thatch End, The Street, Shimpling, Bury St Edmunds, Suffolk, IP29 4HU |
| KNOTTS, Robert Michael Handley RESIGNED | Director | 24 Apr 2012 | 12 Aug 2019 | United Kingdom | January 1941 | 10, Aldersgate Street, London, EC1A 4HJ, England |
| LITHERLAND, Michael Edwin RESIGNED | Director | 22 Apr 2004 | 04 Jan 2008 | | November 1955 | 28 Hertford Close, Ely, Cambridgeshire, CB6 3QS |
| NAYLER, Arnold Wilfred Lawrence RESIGNED | Director | | 24 Apr 2008 | | August 1935 | Southernhay 31 Dukes Wood Avenue, Gerrards Cross, Buckinghamshire, SL9 7LA |
| NETHERCLIFT, Oliver James RESIGNED | Director | | 16 Mar 2005 | | February 1944 | Flat 24, 67 Gloucester Terrace, London, W2 3DH |
| NIPPRESS, Kenneth Raymond RESIGNED | Director | 25 Jul 2005 | 23 Apr 2013 | England | September 1945 | 55 Arthur Street, Ampthill, Bedfordshire, MK45 2QQ |
| OWEN, David RESIGNED | Director | 16 Jan 2025 | 01 Jul 2026 | England | December 1968 | 16 Elmdon Close, Elmdon Close, Penkridge, Stafford, ST19 5EZ, England |
| PENN, Martin Leslie RESIGNED | Director | 15 Apr 2003 | 25 Jul 2005 | United Kingdom | December 1953 | 28 Exbury Way, Andover, Hampshire, SP10 3UH |
| RENTELL, Michael Ernest RESIGNED | Director | | 30 Aug 2012 | England | April 1942 | 6 Kings Road, Cheriton, Folkestone, Kent, CT20 3LG |
| ROBINSON, Paul RESIGNED | Director | 27 Jan 2000 | 25 Apr 2001 | | February 1958 | 16 Aubrey Rise, Malmesbury, Wiltshire, SN16 9XN |
| ROGERS, Nicholas James RESIGNED | Director | 14 Jul 2011 | 31 Oct 2011 | England | August 1985 | 10, Aldersgate Street, London, EC1A 4HJ, England |
| SHAW, Brian RESIGNED | Director | | 06 Dec 1994 | | January 1934 | The Martins Vicarage Road, Redlynch, Salisbury, Wiltshire, SP5 2PE |
| TAYLOR, John Andrew RESIGNED | Director | | 25 May 2005 | | November 1953 | 4010e Night Heron Court, Waldorf, MD 20603, Usa |
| VON ZEPPELIN, Anna Elizabeth Frei Frau RESIGNED | Director | 23 Jul 2008 | 20 May 2015 | England | July 1985 | 4/3, Warrington Crescent, Maida Vale, London, W9 1ED, United Kingdom |
| WARD, Peter RESIGNED | Director | 13 Feb 2008 | 20 Aug 2013 | England | July 1944 | 5 The Glen, Homer, Much Wenlock, Salop, TF13 6NE |
| WEBB, Adrian Doveton Gascoyne RESIGNED | Director | | 29 May 1993 | | December 1925 | Cowleaze Paddock 9, Hartham, Corsham, Wiltshire, SN13 0PZ |
| WELLS, Nigel RESIGNED | Director | | 04 Jan 2008 | | April 1963 | C/O Siemens Electrical 169 Bush Road, Albany North Shore Mail Centre, Auckland, 1333, Newzealand |
| WOODS, John Kenneth RESIGNED | Director | 11 Feb 2012 | 10 Aug 2019 | England | February 1959 | 10, Aldersgate Street, London, EC1A 4HJ, England |