| HUGHES, Jonathan ACTIVE | Secretary | 31 Aug 2023 | | | | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| CAMPBELL, Helen Elizabeth ACTIVE | Director | 01 Sep 2021 | | England | June 1968 | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| COUGHLAN, Daniel Patrick John, Dr ACTIVE | Director | 15 Jun 2020 | | England | November 1982 | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| EDWARDS, Michael John ACTIVE | Director | 06 Dec 2017 | | England | October 1958 | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| ESGUEVILLAS LETE, Alberto ACTIVE | Director | 01 Sep 2021 | | United Kingdom | November 1972 | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| HAMILTON, Sylvia Rosamund ACTIVE | Director | 23 Jun 2016 | | United Kingdom | November 1956 | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| MAST, Victoria ACTIVE | Director | 01 Sep 2024 | | England | January 1984 | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| TONER, Roisin ACTIVE | Director | 01 Nov 2024 | | United Kingdom | July 1972 | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| CURRAN, Margaret Mary RESIGNED | Secretary | 22 Jan 1992 | 17 Jun 1992 | | | 8 Albert Court, Prince Consort Road, London, SW7 2BG |
| FERGUSON, Andrew James RESIGNED | Secretary | 01 Aug 2021 | 31 Aug 2023 | | | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| KANE, John Edward RESIGNED | Secretary | 06 Jun 1994 | 21 Feb 2000 | | | The Principals Lodge, West London Institute Of Higher Educ, Isleworth, Middlesex, TW7 4DU |
| NOONS, Michael Anthony RESIGNED | Secretary | 17 Jun 1992 | 06 Jun 1994 | | | 37 Willow Bank, Ham, Richmond, Surrey, TW10 7QY |
| SENA, Marilyn Marguerite RESIGNED | Secretary | 21 May 2003 | 28 Feb 2006 | | | 12 Wellesley Road, Twickenham, Middlesex, TW2 5SF |
| SHEATH, David John RESIGNED | Secretary | 21 Feb 2000 | 20 May 2003 | | | 50 Saint Stephens Road, Hounslow, Middlesex, TW3 2BQ |
| STEWART, Ian Graham RESIGNED | Secretary | 24 May 2006 | 31 Jul 2021 | | | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| ALLDRIDGE, Pauline Isabella RESIGNED | Director | 24 Jun 2015 | 02 Dec 2020 | England | April 1956 | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| BILIMORIA, Jehangir Dinyar, Mr. RESIGNED | Director | 24 May 2004 | 31 Mar 2005 | United Kingdom | July 1955 | 171 Raeburn Avenue, Surbiton, Surrey, KT5 9DE |
| BISHOP, Mark John RESIGNED | Director | 08 Feb 2006 | 13 Feb 2007 | England | February 1962 | 6 The Copse, Caterham, Surrey, CR3 6DU |
| BISHOP, Mark John RESIGNED | Director | 24 May 2004 | 31 Jul 2005 | | February 1962 | Turnings, 2 Hareston Lane, Caterham, Surrey, CR3 6BD |
| CLIFFORD, Paul Leighton RESIGNED | Director | 18 Mar 2011 | 24 Jun 2021 | England | March 1952 | St Catherine's School, Cross Deep, Twickenham, Middlesex, TW1 4QJ, England |
| COOKE, Anthony Ralph RESIGNED | Director | 20 Sep 2002 | 22 Nov 2004 | United Kingdom | April 1948 | 21 Lebanon Park, Twickenham, Middlesex, TW1 3DF |
| COSTELLO, Geraldine RESIGNED | Director | 01 Sep 2021 | 31 Aug 2024 | England | December 1967 | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| DEEHAN, John Patrick, Rev RESIGNED | Director | 16 Mar 2005 | 14 Jul 2007 | | August 1949 | 262 Kingston Road, Teddington, Middlesex, TW11 9JQ |
| DEVLIN, Gerard, Father RESIGNED | Director | 21 Nov 2007 | 20 Sep 2013 | England | October 1960 | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| DUNNING, Peter RESIGNED | Director | 01 Oct 2002 | 01 May 2004 | | September 1960 | 96 Sixth Cross Road, Twickenham, TW2 5PD |
| ELKES, Graham John RESIGNED | Director | 20 Oct 2005 | 06 Dec 2016 | England | June 1948 | 1 Ennismore Avenue, Guildford, Surrey, GU1 1SP |
| EWBANK, Anthony, Sir RESIGNED | Director | 21 Feb 2000 | 09 Oct 2000 | | July 1925 | 1 Chetwynd House, Hampton Court Road, East Molesey, Surrey, KT8 9BS |
| FRISBY, Sara Anne Kathleen RESIGNED | Director | 08 Feb 2006 | 04 Dec 2013 | United Kingdom | September 1973 | 71 Oak Avenue, Hampton, Middlesex, TW12 3PQ |
| JEFFERSON, Stephen RESIGNED | Director | 27 Jun 2013 | 30 Aug 2019 | England | December 1952 | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| JESSEL, Eira Gwen RESIGNED | Director | 10 Jul 2000 | 30 Jun 2001 | United Kingdom | January 1936 | The Old Court House, Hampton Court, East Molesey, Surrey, KT8 9BW |
| KANE, John, Professor RESIGNED | Director | 22 Jan 1992 | 05 Jun 2000 | | October 1928 | The Lodge Lancaster House, Borough Road, Isleworth, Middlesex, TW7 5DU |
| KELLY, Alphonsus Dominic RESIGNED | Director | 22 Jan 1992 | 28 Apr 2000 | England | January 1949 | 21 Harrington Road, London, SW7 3EU |
| KERIGAN, Stephen Paul RESIGNED | Director | 20 Oct 2005 | 04 Sep 2006 | | June 1962 | 47 Station Road, Teddington, Middlesex, TW11 9AA |
| LANE, Beryl Anne RESIGNED | Director | 21 Feb 2000 | 04 Dec 2014 | England | June 1938 | 23 Kings Paddock, Hampton, Middlesex, TW12 2EF |
| LATHAM, Edward RESIGNED | Director | 04 Sep 2006 | 16 Oct 2009 | | November 1936 | 35 St Nicholas Drive, Shepperton, Middlesex, TW17 9LD |
| MACKECHNIE, Alistair John, Sir RESIGNED | Director | 13 Feb 1997 | 15 Nov 2006 | | November 1934 | 15 Waldegrave Gardens, Strawberry Hill, Twickenham, Middlesex, TW1 4PQ |
| MCDONALD, Linda Mary RESIGNED | Director | 07 Oct 2004 | 24 Jun 2015 | England | April 1950 | 20, The Dene, West Molesey, Surrey, KT8 2HL, United Kingdom |
| MCNULTY, David RESIGNED | Director | 01 Sep 2019 | 14 Oct 2022 | England | February 1950 | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| MORRIS, Elizabeth RESIGNED | Director | 25 Mar 2015 | 31 Aug 2025 | England | May 1958 | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| MURPHY, John RESIGNED | Director | 01 Nov 2002 | 22 Nov 2004 | | December 1964 | 13 Old Deer Park Gardens, Richmond, Surrey, TW9 2TN |
| O DONNELL, Paul James RESIGNED | Director | 27 Jun 2001 | 01 Mar 2003 | | October 1957 | 18 Hampton Road, Twickenham, Middlesex, TW2 5QB |
| O'BRIEN, Michael Francis RESIGNED | Director | 01 Mar 2002 | 25 Sep 2007 | | August 1947 | 89 Wood Lane, Isleworth, Middlesex, TW7 5EG |
| PATTERSON, Maria Teresa RESIGNED | Director | 09 Oct 2018 | 11 Jan 2023 | England | July 1953 | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| PERRIER, Alan RESIGNED | Director | 27 Jun 2013 | 25 Jun 2019 | England | August 1948 | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| RICHARDS, James RESIGNED | Director | 01 Sep 2021 | 31 Aug 2025 | England | January 1979 | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| RUSHTON, Christine Mary RESIGNED | Director | 01 Oct 2002 | 24 Jun 2015 | England | January 1952 | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| SHEATH, David John RESIGNED | Director | 21 Feb 2000 | 31 Oct 2007 | | August 1944 | 50 Saint Stephens Road, Hounslow, Middlesex, TW3 2BQ |
| SKEHAN, Sean RESIGNED | Director | 19 Jun 2014 | 25 Jun 2019 | England | September 1964 | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| SKEHAN, William, Fr RESIGNED | Director | 25 Sep 2007 | 24 Jun 2015 | England | August 1960 | St Catherine's School Twickenham, Cross Deep, Twickenham, TW1 4QJ |
| SPARROW, Edward Charles Awdeley RESIGNED | Director | 25 Sep 2007 | 24 Jun 2021 | England | January 1953 | Broadwalk House, 5 Appold Street, London, EC2A 2HA, England |
| WHITWAM, Victoria Charlotte RESIGNED | Director | 16 Nov 2010 | 27 Jun 2013 | England | January 1967 | 22, Church Road, East Molesey, Surrey, KT8 9DS, England |
| WILLIAMS, Nigel Edward Oliver RESIGNED | Director | 01 Nov 2002 | 01 Jul 2005 | England | February 1952 | 17 Holmes Road, Strawberry Hill, Twickenham, Middlesex, TW1 4RF |