| CHAWLA, Rajat ACTIVE | Director | 01 Nov 2023 | | United Kingdom | January 1980 | Quantum House, 60 Norden Road, Maidenhead, Berkshire, SL6 4AY, United Kingdom |
| WHITE, Angela ACTIVE | Director | 30 May 2023 | | United Kingdom | March 1976 | Quantum House, 60 Norden Road, Maidenhead, Berkshire, SL6 4AY, United Kingdom |
| BROWN, Katharine Jane RESIGNED | Secretary | 21 May 1999 | 11 Oct 1999 | | | 41 Anxey Way, Haddenham, Aylesbury, Buckinghamshire, HP17 8DJ |
| EVANS, John Mark RESIGNED | Secretary | 18 Feb 1994 | 23 Jun 1995 | | | 60 Ladbroke Grove, London, W11 2PB |
| JAGUN, Ayotola RESIGNED | Secretary | 26 Sep 2003 | 12 Jan 2007 | | | 4e Bassett Road, London, W10 6JJ |
| KENNEDY, Denise Yvonne RESIGNED | Secretary | 23 Jun 1995 | 21 May 1999 | | | 3 Hamilton Lodge, Kings Road, Windsor, Berkshire, SL4 2AS |
| PASHLEY, Sophy RESIGNED | Secretary | 08 Feb 2017 | 31 Dec 2021 | | | Horizon Honey Lane, Hurley, Maidenhead, Berkshire, SL6 6RJ, United Kingdom |
| RUBENSTEIN, Howard Justin RESIGNED | Secretary | 11 Oct 1999 | 26 Sep 2003 | | | 10 Cyprus Avenue, Finchley, London, N3 1ST |
| WARD DYER, Robert Francis George RESIGNED | Secretary | | 18 Feb 1994 | | | 58 Alwyn Avenue, Chiswick, London, W4 4PB |
| THROGMORTON SECRETARIES LLP RESIGNED | Secretary | 16 Jul 2007 | 01 Jan 2021 | | | 4th Floor, Reading Bridge House, George Street, Reading, Berkshire, RG1 8LS, England |
| THROGMORTON UK LIMITED RESIGNED | Secretary | 16 Jul 2007 | 16 Jul 2007 | | | 42-44 Portman Road, Reading, Berkshire, RG30 1EA |
| THROGMORTON UK LIMITED RESIGNED | Secretary | 12 Jan 2007 | 16 Jul 2007 | | | 42-44 Portman Road, Reading, Berkshire, RG30 1EA |
| BAILEY, Russell Donald RESIGNED | Director | 02 Jul 2007 | 02 Jul 2015 | United Kingdom | October 1961 | Horizon, Honey Lane, Hurley, Maidenhead, Berkshire, SL6 6RJ, England |
| BAKER, Julie April RESIGNED | Director | 06 Dec 2010 | 21 Oct 2011 | England | October 1966 | 225 Bath Road, Slough, Berkshire, SL1 4AU |
| BRINKERINK, Rob RESIGNED | Director | 01 Jul 2019 | 12 Feb 2021 | United Kingdom | March 1983 | Horizon, Honey Lane, Hurley, Maidenhead, Berkshire, SL6 6RJ |
| BUCKLEY, John David RESIGNED | Director | | 16 Dec 1992 | United Kingdom | July 1956 | 18 Shepherds Fold, Holmer Green, High Wycombe, Buckinghamshire, HP15 6XZ |
| CASINI, Cristiano RESIGNED | Director | 12 Jan 2006 | 31 Dec 2006 | | February 1971 | 47 Marloes Road, London, W8 6LA |
| CHRONIS, Anastasios RESIGNED | Director | 06 Jul 2015 | 31 May 2017 | England | December 1967 | Horizon, Honey Lane, Hurley, Maidenhead, Berkshire, SL6 6RJ |
| COTTER, Sandrine Marcelle Veronique RESIGNED | Director | 01 Jan 2007 | 28 Jun 2019 | England | June 1970 | Horizon, Honey Lane, Hurley, Maidenhead, Berkshire, SL6 6RJ, England |
| CRADDOCK, Robert Walter RESIGNED | Director | 21 Oct 2011 | 01 Sep 2013 | England | February 1969 | Horizon, Honey Lane, Hurley, Maidenhead, Berkshire, SL6 6RJ, England |
| FULTON, John RESIGNED | Director | 22 Jun 1993 | 08 Feb 2002 | United Kingdom | March 1952 | 25 The Orchards, Eaton Bray, Dunstable, Bedfordshire, LU6 2DD |
| HANDLEY, Helen Kay RESIGNED | Director | 09 Dec 2005 | 08 Mar 2007 | | April 1974 | 6 Daniels Lane, Warlingham, Surrey, CR6 9ET |
| JAGUN, Ayotola RESIGNED | Director | 08 Dec 2005 | 12 Jan 2007 | | March 1968 | 4e Bassett Road, London, W10 6JJ |
| JONES, David Peter Gwynne RESIGNED | Director | 28 Jun 2019 | 18 Jul 2023 | United Kingdom | June 1972 | Horizon, Honey Lane, Hurley, Maidenhead, Berkshire, SL6 6RJ |
| MULDER, Antoon Gerard RESIGNED | Director | 18 Feb 1994 | 01 Oct 1999 | | January 1938 | 5 Rosebery Mews, Mentmore, Leighton Buzzard, Bedfordshire, LU7 0UE |
| PARSONS, Charles RESIGNED | Director | 11 Mar 2002 | 12 Jan 2006 | | August 1968 | 58 Burnfoot Avenue, London, SW6 5EA |
| ROORDA, Peter Jan Wytze RESIGNED | Director | | 28 Jun 1996 | | April 1948 | Bj Gemmekelaan 70, 2252 Tx Voorschotem, FOREIGN, Netherlands |
| RUBENSTEIN, Howard Justin RESIGNED | Director | 12 May 2000 | 26 Sep 2003 | United Kingdom | November 1967 | 10 Cyprus Avenue, Finchley, London, N3 1ST |
| SARAFOGLOU, Gerasimos RESIGNED | Director | 01 Jun 2017 | 01 Jun 2023 | United Kingdom | June 1967 | Horizon, Honey Lane, Hurley, Maidenhead, SL6 6RJ, United Kingdom |
| SNOW, Nicholas John RESIGNED | Director | 01 Dec 2011 | 10 Sep 2012 | Netherlands | January 1964 | Horizon, Honey Lane, Hurley, Maidenhead, Berkshire, SL6 6RJ, England |
| STAGG, Stephen Richard RESIGNED | Director | 01 Oct 1999 | 29 Jul 2003 | | August 1958 | 3 Kemsley Chase, Farnham Royal, Slough, Buckinghamshire, SL2 3LU |
| STAM, Jodocus Wilhelmus Franciscus Severinus RESIGNED | Director | 12 Jan 2007 | 06 Dec 2010 | England | June 1967 | 225 Bath Road, Slough, Berkshire, SL1 4AU |
| VAN ALPHEN, Ivo RESIGNED | Director | 28 May 2021 | 01 Dec 2024 | United Kingdom | December 1983 | Quantum House, 60 Norden Road, Maidenhead, Berkshire, SL6 4AY, United Kingdom |
| VAN DROFFELAAR, Hubertus RESIGNED | Director | 01 Jul 1996 | 29 Jul 2003 | | February 1949 | Vleutensevaart 35, Utrecht, 3532 AD, Holland |
| VAN OERS, Frank RESIGNED | Director | 29 Jul 2003 | 01 Dec 2011 | Netherlands | July 1959 | Horizon, Honey Lane, Hurley, Maidenhead, Berkshire, SL6 6RJ, England |
| WAKELIN, Geoffrey George RESIGNED | Director | | 22 Mar 1994 | England | December 1950 | Gothic Farmhouse, High Street, Arlesey, Bedfordshire, SG15 6SX |
| WELLS, Christian Henry RESIGNED | Director | 26 Sep 2003 | 08 Dec 2005 | | November 1970 | Jubilee Cottage 2 Kingfisher Grove, Three Mile Cross, Reading, Berkshire, RG7 1RA |
| WELMERS, Rudolf Paul RESIGNED | Director | 29 Jul 2003 | 30 Jun 2007 | | June 1956 | Long Barn, West Road, Weybridge, Surrey, KT13 0LZ |