| ALLMAN, Martin Robert ACTIVE | Director | 14 May 2025 | | England | November 1973 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| BRYARS, Sarah Anne ACTIVE | Director | 01 May 2024 | | England | August 1970 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| FORSTER, Owen ACTIVE | Director | 07 Jul 2022 | | England | October 1977 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| HARE, Katherine Elizabeth ACTIVE | Director | 14 May 2025 | | England | March 1985 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| ISHERWOOD, Paul David ACTIVE | Director | 07 Jul 2022 | | England | December 1957 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| SKUSE, Emma Victoria ACTIVE | Director | 14 May 2025 | | England | May 1976 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| SMITH, Martyn Douglas ACTIVE | Director | 01 Jan 2018 | | England | January 1960 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| TROUPE, Sian ACTIVE | Director | 07 Jul 2022 | | England | February 1975 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| WALKER, Rachel ACTIVE | Director | 18 Apr 2019 | | England | March 1979 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| MANUEL, Ronald Graham RESIGNED | Secretary | 17 Nov 2003 | 27 Apr 2013 | | | 5 Steps Close, Cam, Dursley, Gloucestershire, GL11 5JG |
| ADDADAHINE, Sam Alexander RESIGNED | Director | 01 May 2024 | 29 Jan 2026 | England | August 1991 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| ALCOCK, Jennifer Margaret RESIGNED | Director | 17 Nov 2003 | 26 Apr 2014 | England | December 1948 | 6 Briorley Close, Abbeymead, Gloucester, Gloucestershire, GL4 4XN |
| BALLARD, Mark RESIGNED | Director | 05 Feb 2025 | 29 Jan 2026 | United Kingdom | January 1967 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| BARNETT, Jennifer Ann RESIGNED | Director | 17 Nov 2003 | 23 Apr 2005 | | January 1944 | 18 Worley Ridge, Nailsworth, Stroud, Gloucestershire, GL6 0DP |
| BOTTRILL, Elizabeth RESIGNED | Director | 18 Apr 2019 | 04 May 2023 | England | September 1977 | 27, Upper Church Road, Stroud, GL5 4JF, England |
| BRADLEY-JONES, Susan Elizabeth RESIGNED | Director | 17 Nov 2003 | 12 May 2018 | England | November 1947 | Bay Tree House Stancombe View, Lower House Lane, North Nibley, Gloucestershire, GL11 6BP |
| BUCHANAN, Alistair John RESIGNED | Director | 04 Dec 2003 | 18 Nov 2005 | | December 1935 | 11 London Place, Oxford, Oxfordshire, OX4 1BD |
| BURT, Christine Lesley RESIGNED | Director | 12 May 2018 | 15 Dec 2020 | England | April 1955 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| BUSBY, Roger John Nicholas RESIGNED | Director | 17 Nov 2003 | 31 Dec 2009 | England | August 1937 | 12 Dapps Hill, Keynsham, Bristol, BS31 1ES |
| EAST, Diana Elizabeth RESIGNED | Director | 17 Nov 2003 | 24 Apr 2004 | | July 1947 | Box Cottage, West Kington Wick, Chippenham, Wiltshire, SN14 7JD |
| ELWES, Henry William George, Sir RESIGNED | Director | 06 Dec 2003 | 01 Dec 2007 | England | October 1935 | Colesbourne Park, Nr Cheltenham, Cheltenham, Gloucestershire, GL53 9NP |
| EVANS, David Malcolm RESIGNED | Director | 01 Aug 2004 | 25 Apr 2009 | | March 1936 | 20 Courtfield, Tetbury, Gloucestershire, GL8 8LF |
| FRASER, Christine Joan RESIGNED | Director | 25 Apr 2009 | 27 Apr 2013 | England | November 1969 | 9, Willoughby Road, Bristol, Avon, BS7 8QX |
| FROST, Nigel RESIGNED | Director | 13 Jul 2023 | 14 May 2025 | England | October 1968 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| GOBBETT, Peter Michael RESIGNED | Director | 14 Apr 2007 | 24 Apr 2010 | England | October 1937 | Little Doward 45 Aintree Drive, Downend, Bristol, Avon, BS16 6SY |
| GRANT, Liam Gavin RESIGNED | Director | 11 Aug 2014 | 13 Jul 2023 | United Kingdom | June 1955 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| GREEN, Martin RESIGNED | Director | 18 Apr 2019 | 28 Nov 2023 | England | April 1950 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| HAMMOND, John Donald Kerr RESIGNED | Director | 01 Jan 2010 | 22 May 2019 | England | December 1950 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| HAZEL, Paul Malcolm RESIGNED | Director | 25 Apr 2009 | 01 Oct 2013 | England | June 1952 | Roel Hill House, Hawling, Cheltenham, Gloucestershire, GL54 5AP |
| HEADEN, Margaret Bernice RESIGNED | Director | 01 Dec 2007 | 22 May 2019 | England | May 1947 | 17 Burleigh View, Bussage, Stroud, Gloucestershire, GL6 8DD |
| HIGGINBOTHAM, Peter Joseph RESIGNED | Director | 25 Apr 2009 | 28 Apr 2012 | England | July 1928 | 3, Stonecote Ridge, Bussage, Glos, GL6 8JY |
| HORTON, Brian Richard RESIGNED | Director | 17 Nov 2003 | 24 Apr 2004 | | July 1938 | Kings Court, Kingsdown Grove, Kingsdown, Corsham, Wiltshire, SN13 8BN |
| HOULTON, Peter Leslie RESIGNED | Director | 17 Nov 2003 | 25 Apr 2009 | | October 1939 | 17 Fenbrook Close, Hambrook, Bristol, BS16 1QJ |
| HOWARTH, Michael, Dr RESIGNED | Director | 09 Jul 2015 | 15 Dec 2020 | England | October 1941 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| KENDALL, John Edward, Colonel RESIGNED | Director | 24 Apr 2004 | 14 May 2016 | England | July 1937 | Star Cottage Broad Street, Kings Stanley, Stonehouse, Gloucestershire, GL10 3PN |
| LESCHALLAS, William Henry RESIGNED | Director | 04 Dec 2003 | 01 Dec 2007 | United Kingdom | July 1963 | Beehive House, Nags Head Lane, Avening, Tetbury, Gloucestershire, GL8 8NZ |
| MANUEL, Ronald Graham RESIGNED | Director | 17 Nov 2003 | 27 Apr 2013 | England | October 1939 | 5 Steps Close, Cam, Dursley, Gloucestershire, GL11 5JG |
| MILLS, Antonia RESIGNED | Director | 24 Apr 2010 | 26 Apr 2014 | England | April 1955 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| MINTRAM, Michael Alan RESIGNED | Director | 11 Aug 2014 | 12 Oct 2023 | England | July 1955 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| MORRISS, Veronica Elizabeth RESIGNED | Director | 15 Dec 2020 | 25 Feb 2022 | England | August 1946 | 6 Bleasby Gardens, Lansdown Road, Cheltenham, GL51 6UL, England |
| PARKER, John Charles RESIGNED | Director | 15 Dec 2020 | 08 Dec 2022 | England | August 1981 | 17, Anderson Drive, Stonehouse, GL10 2QL, England |
| POLLEN, Peregrine Michael Hungerford RESIGNED | Director | 01 Dec 2004 | 31 Dec 2008 | England | January 1931 | The Farmhouse, Norton Hall Mickleton, Chipping Campden, Gloucestershire, GL55 6PU |
| POTTER, Malcolm RESIGNED | Director | 01 Dec 2007 | 22 May 2019 | England | March 1940 | The Old Farmhouse, Westonbirt, Tetbury, Gloucestershire, GL8 8QH |
| PURKESS, Hugh Fredrick RESIGNED | Director | 17 Nov 2003 | 31 Dec 2012 | England | May 1937 | Welshway Cottage, Bagendon, Cirencester, Gloucestershire, GL7 7JG |
| RANDLE, Alison Jane RESIGNED | Director | 28 Apr 2012 | 05 Jan 2015 | United Kingdom | March 1969 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| RYMER, Bernard Stephen RESIGNED | Director | 26 Jul 2013 | 17 Aug 2017 | England | March 1952 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| SACHDEV, Neil RESIGNED | Director | 13 Jul 2023 | 02 Oct 2024 | United Kingdom | November 1958 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| SEGAR, Stephen John Buckland RESIGNED | Director | 17 Nov 2003 | 12 May 2018 | England | October 1944 | Willow Bank, High Road, Ashton Keynes, Swindon, Wiltshire, SN6 6NX |
| SMITH, Andrew John RESIGNED | Director | 03 Aug 2015 | 12 May 2018 | England | November 1967 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| THORNTON, Karen Dawn RESIGNED | Director | 20 Dec 2005 | 31 Dec 2017 | England | November 1964 | Rose Cottage, Preston, Cirencester, Gloucestershire, GL7 5PR |
| TOOMER, Simon RESIGNED | Director | 01 Jan 2013 | 31 Jul 2015 | United Kingdom | July 1960 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| ULYATT, Matthew Ryan RESIGNED | Director | 01 Feb 2018 | 02 Jan 2019 | England | November 1980 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| WALKER, Christian RESIGNED | Director | 13 Jul 2023 | 05 Feb 2025 | England | April 1979 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| WESTGATE, James Michael RESIGNED | Director | 23 Apr 2005 | 27 Apr 2013 | England | March 1942 | 8 Kemble Grove, The Reddings, Cheltenham, Gloucestershire, GL51 6TX |
| WESTON, Elizabeth Faye RESIGNED | Director | 13 May 2017 | 01 Aug 2019 | England | September 1985 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| WOODS, Alaana RESIGNED | Director | 07 Jul 2022 | 23 Feb 2024 | England | September 1984 | The Great Oak Hall, Westonbirt The National, Arboretum Tetbury, Gloucestershire, GL8 8QS |
| WORKMAN, John Henry Bowstead RESIGNED | Director | 04 Dec 2003 | 22 Apr 2006 | | November 1923 | Far End, Sheepscombe, Stroud, Gloucestershire, GL6 7RL |