| O'ROURKE, Catheryn Ann ACTIVE | Secretary | 11 Feb 2022 | | | | 103-105, Bath Road, Slough, Berkshire, SL1 3UH |
| BONFIELD, Andrew Robert John ACTIVE | Director | 01 Jul 2018 | | United Kingdom | August 1962 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| DARROCH, David Jeremy ACTIVE | Director | 01 Nov 2022 | | United Kingdom | July 1962 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| DAWSON, Fiona Eleanor ACTIVE | Director | 01 Jun 2024 | | United Kingdom | May 1966 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| EISENHARDT, Shannon Sue ACTIVE | Director | 17 Oct 2023 | | United Kingdom | September 1974 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| HAYS, Marybeth ACTIVE | Director | 01 Feb 2024 | | United States | May 1968 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| INGRAM, Tamara ACTIVE | Director | 01 Feb 2023 | | United Kingdom | October 1960 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| KIRSCH, Harry ACTIVE | Director | 01 Apr 2026 | | Switzerland | March 1965 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| LICHT, Kristoffer Loe ACTIVE | Director | 01 Jun 2023 | | United Kingdom | September 1976 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| NATH, Deepak ACTIVE | Director | 01 Apr 2026 | | United States | April 1972 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| OSCHMANN, Stefan Joachim, Dr ACTIVE | Director | 01 Jan 2025 | | Germany | July 1957 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| PATTERSON, Gavin Echlin ACTIVE | Director | 01 Jul 2026 | | England | September 1967 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| STOCK, Elane ACTIVE | Director | 01 Sep 2018 | | United States | July 1964 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| VERDUIN, Patricia ACTIVE | Director | 09 Jun 2025 | | United States | August 1959 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| WATERHOUSE, Deborah Jayne ACTIVE | Director | 01 Jul 2026 | | England | August 1967 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| BONDY, Rupert RESIGNED | Secretary | 01 Jan 2017 | 11 Feb 2022 | | | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| LOGAN, Christine Anne-Marie RESIGNED | Secretary | 01 Oct 2015 | 01 Jan 2017 | | | 103-105, Bath Road, Slough, Berkshire, SL1 3UH, United Kingdom |
| MORDAN, William Richard RESIGNED | Secretary | 01 Oct 2014 | 01 Oct 2015 | | | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| RICHARDSON, Elizabeth Anne RESIGNED | Secretary | 30 Jul 2007 | 30 Sep 2014 | | | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| TRUSEC LIMITED RESIGNED | Nominee Secretary | 06 Jun 2007 | 30 Jul 2007 | | | 2 Lambs Passage, London, EC1Y 8BB |
| BECHT, Lambertus Johannes Hermanus RESIGNED | Director | 30 Aug 2007 | 01 Sep 2011 | England | July 1956 | 103-105, Bath Road, Slough, Berkshire, SL1 3UH |
| BELLAMY, Adrian David Presland RESIGNED | Director | 30 Aug 2007 | 03 May 2018 | United Kingdom | February 1942 | 103-105, Bath Road, Slough, Berkshire, SL1 3UH |
| BINDRA, Jaspal Singh RESIGNED | Director | 01 Jul 2014 | 05 May 2016 | Hong Kong | September 1960 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| BOHUON, Olivier Jean RESIGNED | Director | 01 Jan 2021 | 05 May 2024 | United Kingdom | January 1959 | 103-105, Bath Road, Slough, Berkshire, SL1 3UH, United Kingdom |
| CARR, Jeffrey RESIGNED | Director | 09 Apr 2020 | 31 Mar 2024 | United Kingdom | September 1961 | 103-105, Bath Road, Slough, Berkshire, SL1 3UH, United Kingdom |
| COUSINS, Richard John RESIGNED | Director | 01 Oct 2009 | 07 May 2014 | Uk | March 1959 | 103-105, Bath Road, Slough, Berkshire, SL1 3UH |
| DAY, Colin Richard RESIGNED | Director | 30 Aug 2007 | 08 Feb 2011 | England | March 1955 | 103-105, Bath Road, Slough, Berkshire, SL1 3UH |
| DE GAY, Sarah RESIGNED | Director | 06 Jun 2007 | 10 Jul 2007 | England | April 1965 | N4 |
| DOHERTY, Mary Elizabeth RESIGNED | Director | 08 Feb 2011 | 12 Feb 2013 | England | October 1957 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| DURANTE, Nicandro RESIGNED | Director | 01 Dec 2013 | 31 Dec 2023 | United Kingdom | September 1956 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| EDWARDS, Simon Jeremy RESIGNED | Director | 30 Jul 2007 | 30 Aug 2007 | United Kingdom | April 1961 | 132 Westhall Road, Warlingham, Surrey, CR6 9BU |
| HARF, Gerd Peter, Dr RESIGNED | Director | 30 Aug 2007 | 21 Dec 2015 | Uk | May 1946 | 103-105, Bath Road, Slough, Berkshire, SL1 3UH |
| HARRIS, Mary Elaine RESIGNED | Director | 10 Feb 2015 | 08 May 2025 | Netherlands | April 1966 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| HENNAH, Adrian Nevil RESIGNED | Director | 12 Feb 2013 | 09 Apr 2020 | United Kingdom | November 1957 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| HYDON, Kenneth John RESIGNED | Director | 30 Aug 2007 | 03 May 2018 | England | November 1944 | 103-105, Bath Road, Slough, Berkshire, SL1 3UH |
| KAPOOR, Rakesh RESIGNED | Director | 01 Sep 2011 | 02 Sep 2019 | United Kingdom | August 1958 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| KHAN, Mehmood, Dr RESIGNED | Director | 01 Jul 2018 | 23 Jul 2025 | United States | March 1958 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| KIRBY, Pamela Josephine, Dr RESIGNED | Director | 10 Feb 2015 | 02 May 2024 | England | September 1953 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| LACROIX, Andre Pierre Joseph RESIGNED | Director | 01 Oct 2008 | 31 Dec 2018 | England | March 1960 | 103-105, Bath Road, Slough, Berkshire, SL1 3UH |
| MACKAY, Ernest Arthur Graham RESIGNED | Director | 30 Aug 2007 | 12 Jun 2013 | England | July 1949 | 103-105, Bath Road, Slough, Berkshire, SL1 3UH |
| MADHAVAN, Mahesh RESIGNED | Director | 01 Jan 2025 | 01 Apr 2026 | Bermuda | September 1962 | 103-105, Bath Road, Slough, Berkshire, SL1 3UH, United Kingdom |
| MATHEW, Sara RESIGNED | Director | 01 Jul 2019 | 20 May 2022 | United States | July 1955 | 103-105, Bath Road, Slough, Berkshire, SL1 3UH, United Kingdom |
| MONIR, Nicole Frances RESIGNED | Director | 06 Jun 2007 | 10 Jul 2007 | United Kingdom | May 1967 | 92 Crosslands, Caddington, Luton, Bedfordshire, LU1 4ER |
| MURPHY, Gerard Martin, Dr RESIGNED | Director | 30 Aug 2007 | 17 Jul 2008 | | November 1955 | 11 Ellerton House, 11 Bryanston Square, London, W1H 2FF |
| NARASIMHAN, Laxman RESIGNED | Director | 16 Jul 2019 | 30 Sep 2022 | United Kingdom | April 1967 | 103-105, Bath Road, Slough, Berkshire, SL1 3UH, United Kingdom |
| RICHARDSON, Elizabeth Anne RESIGNED | Director | 30 Jul 2007 | 30 Aug 2007 | United Kingdom | December 1956 | 6 Aldwick Drive, Maidenhead, Berkshire, SL6 4JQ |
| ROBERTS, Christopher Charles Brining RESIGNED | Director | 30 Jul 2007 | 30 Aug 2007 | England | March 1962 | 36 Redwood Place, Beaconsfield, Buckinghamshire, HP9 1RP |
| SHIM, Sue Ohk RESIGNED | Director | 01 Jul 2014 | 05 May 2016 | Republic Of Korea | January 1962 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| SINCLAIR, Christopher Alan RESIGNED | Director | 10 Feb 2015 | 02 May 2024 | United States | September 1950 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| SPRIESER, Judith Ann RESIGNED | Director | 30 Aug 2007 | 03 May 2018 | United States | August 1953 | 103-105, Bath Road, Slough, Berkshire, SL1 3UH |
| STEWART, Alan James Harris RESIGNED | Director | 01 Feb 2022 | 02 May 2024 | United Kingdom | April 1960 | 103-105, Bath Road, Slough, Berkshire, SL1 3UH, United Kingdom |
| SYMONDSON, Rebecca Ann RESIGNED | Director | 10 Jul 2007 | 30 Jul 2007 | | March 1979 | 154 Northchurch Road, London, N1 3PA |
| TOUGH, Douglas Davis RESIGNED | Director | 01 Nov 2014 | 05 May 2016 | Usa | June 1949 | 103-105 Bath Road, Slough, Berkshire, SL1 3UH |
| TUCKER, Warren Gordon RESIGNED | Director | 24 Feb 2010 | 12 May 2020 | United Kingdom | July 1962 | 103-105, Bath Road, Slough, Berkshire, SL1 3UH, United Kingdom |
| TWENTYMAN, Jeffrey Cooper RESIGNED | Director | 10 Jul 2007 | 30 Jul 2007 | | October 1965 | 3 Hilltop Road, London, NW6 QA |
| TYLER, David Alan RESIGNED | Director | 30 Aug 2007 | 30 Sep 2009 | | January 1953 | 6 Ernle Road, Wimbledon, London, SW20 0HJ |
| VALLE, Margherita Della, Ms. RESIGNED | Director | 01 Jul 2020 | 01 Apr 2026 | England | April 1965 | 103-105, Bath Road, Slough, Berkshire, SL1 3UH, United Kingdom |
| WHITE, Peter Richard, Mr. RESIGNED | Director | 30 Aug 2007 | 01 May 2008 | England | February 1942 | Down House, The Hildens, Westcott, Dorking, Surrey, RH4 3JX |