| CLAY, Jeremy ACTIVE | Director | 01 Dec 2021 | | England | May 1961 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| COMPTON, Tania, Lady ACTIVE | Director | 23 Oct 2001 | | United Kingdom | October 1963 | Spilsbury Farm, Tisbury, Salisbury, Wiltshire, SP3 6RU |
| EGREMONT, Audrey Caroline, Lady ACTIVE | Director | 01 May 2004 | | England | January 1949 | Petworth House, Church Street, Petworth, West Sussex, GU28 0AE |
| GATENBY, Christopher Jason ACTIVE | Director | 18 Sep 2024 | | England | June 1969 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| MCMULLAN, Edward Brownlow ACTIVE | Director | 03 Mar 2021 | | England | August 1960 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| PINCHBECK, Bridget Ann ACTIVE | Director | 08 Jun 2022 | | United Kingdom | June 1950 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| RITBLAT, Jillian Rosemary, Lady ACTIVE | Director | 20 Feb 2026 | | England | December 1942 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| RUFFER, Jane Mary ACTIVE | Director | 20 Sep 2023 | | England | March 1956 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| SANDERSON, Bryan ACTIVE | Director | 06 Dec 2013 | | England | October 1940 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| SASSOON, Edwina Valentine ACTIVE | Director | 08 Jun 2022 | | England | February 1951 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| SAUMAREZ SMITH, Charles Robert, Sir ACTIVE | Director | 25 Apr 2018 | | England | May 1954 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| SPICER, Charles Alexander Evan, Dr ACTIVE | Director | 18 Sep 2024 | | England | January 1965 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| STUART-SMITH, Thomas Richard Stephen Peregrine ACTIVE | Director | 18 Jun 2008 | | United Kingdom | February 1960 | The Barn, Serge Hill, Abbots Langley, Hertfordshire, WD5 0RY |
| SULMAN, Nicola, Marchioness Of Normandy ACTIVE | Director | 01 Dec 2012 | | United Kingdom | February 1960 | 52, Tite Street, 52 Tite Street, London, SW3 4JA, United Kingdom |
| TYLER, Rupert David ACTIVE | Director | 07 Jun 2023 | | England | January 1962 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| DANNREUTHER, Ion Alexander RESIGNED | Secretary | | 06 Nov 1996 | | | Gable Cottage, Manningford Abbots, Pewsey, Wilts, SN9 6JA |
| HALFORD, Roger, Dr RESIGNED | Secretary | 26 Jul 2006 | 24 Apr 2007 | | | 247 Mayall Road, London, SE24 0PQ |
| NORRIS, Melanie Francesca RESIGNED | Secretary | 23 Oct 2001 | 26 Jul 2006 | | | 7 Coatham Place, Cranleigh, Surrey, GU6 7EW |
| OGILVY, James Donald Diarmid, The Hon RESIGNED | Secretary | 30 Sep 2000 | 23 Oct 2001 | | | Sedgebrook Manor, Grantham, Lincolnshire, NG32 2EU |
| WILKINSON, Henry Russell RESIGNED | Secretary | 06 Nov 1996 | 30 Sep 2000 | | | 4 Avenue Road, Epsom, Surrey, KT18 7QT |
| ANGLESEY, George Charles Henry Victorpaget, 7th Marquess RESIGNED | Director | | 04 Feb 1999 | | October 1922 | Plas Newydd, Llanfairpwll, Anglesey, Gwynedd, LL61 6DZ |
| BURLINGTON, Laura, Lady RESIGNED | Director | 28 Feb 2018 | 05 Feb 2024 | United Kingdom | March 1972 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| CAMPBELL-PRESTON, Colin Arthur RESIGNED | Director | 27 Oct 1999 | 25 Apr 2018 | United Kingdom | April 1958 | The Lodge, Wicken House, Cross Tree Road, Wicken, Milton Keynes, Northamptonshire, MK19 6BX |
| CARRINGTON, Peter Alexander Rupert, The Rt Hon The Lord RESIGNED | Director | | 31 Dec 2006 | | June 1919 | The Manor House, Bledlow, Aylesbury, Bucks, HP17 4PB |
| CORMACK, Patrick Thomas, Sir RESIGNED | Director | | 20 Jul 2000 | United Kingdom | May 1939 | The Lyons, Enville, Staffordshire, DY7 5CD |
| DANNREUTHER, Ion Alexander RESIGNED | Director | | 06 Nov 1996 | | September 1920 | Gable Cottage, Manningford Abbots, Pewsey, Wilts, SN9 6JA |
| DAVIDSON, James RESIGNED | Director | 12 Nov 2003 | 01 Mar 2011 | United Kingdom | February 1943 | Forwood East, Well Hill, Mitchinhampton, GL6 9AB |
| FANE, Mark RESIGNED | Director | 15 Dec 2010 | 07 Jun 2023 | United Kingdom | June 1958 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| FITZROY, Hugh Denis Charles, The Duke Of Grafton RESIGNED | Director | | 04 Feb 1999 | | April 1919 | Euston Hall, Thetford, Norfolk, IP24 2QW |
| FORTESCUE, Alexander Jan RESIGNED | Director | 20 Sep 2023 | 17 May 2024 | England | November 1968 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| FURNESS, Sarah, Dr RESIGNED | Director | 13 Dec 2014 | 16 Sep 2015 | England | July 1955 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| GARDINER, Hazel Ann RESIGNED | Director | 01 Dec 2021 | 08 Jul 2026 | England | June 1978 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| HALCROW, Michael David RESIGNED | Director | 03 Mar 2021 | 20 Oct 2022 | England | January 1964 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| HAMBRO, Richard Alexander RESIGNED | Director | 12 Dec 2002 | 31 Dec 2006 | | October 1946 | Waverton House, Moreton In Marsh, Gloucestershire, GL56 9TB |
| HOLT, Frederick Terence RESIGNED | Director | 27 Oct 1999 | 08 Mar 2001 | | October 1953 | 4 Pratt Walk, Lambeth, London, SE11 6AS |
| INNESS, Anthony Paul Adrian RESIGNED | Director | 16 Nov 1994 | 12 Mar 1999 | | October 1944 | 39 St Leonards Road, East Sheen, London, SW14 7LY |
| KAUFMANN, Michael RESIGNED | Director | 01 Mar 2011 | 15 Dec 2012 | United Kingdom | September 1953 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| KESWICK, Emma RESIGNED | Director | 15 Dec 2010 | 08 Jun 2022 | United Kingdom | October 1950 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| LESTER, Jonathan Robert RESIGNED | Director | 25 Sep 2019 | 18 Nov 2020 | England | March 1947 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| LEWIS-CROWN, Peter RESIGNED | Director | 27 Oct 1999 | 20 Apr 2017 | United Kingdom | April 1930 | 29 Thurloe Place, London, SW7 2HQ |
| MAGAN, George Morgan, Lord RESIGNED | Director | 11 Sep 2001 | 31 Dec 2006 | England | November 1945 | 9 Cambridge Place, London, W8 5PB |
| MORRISON, David RESIGNED | Director | 28 Feb 2018 | 07 Nov 2020 | England | January 1959 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| NEWTON, Barry John RESIGNED | Director | 15 Mar 2015 | 08 Jun 2022 | United Kingdom | September 1968 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| NICHOLSON, Lorna Rosemary RESIGNED | Director | | 20 Jul 2000 | | July 1920 | 74 Coleherne Court, Old Brompton Road, London, SW5 0EF |
| OGILVY, James Donald Diarmid, The Hon RESIGNED | Director | 30 Sep 2000 | 23 Oct 2001 | United Kingdom | June 1935 | Sedgebrook Manor, Grantham, Lincolnshire, NG32 2EU |
| OGILVY, James Donald Diarmid, The Hon RESIGNED | Director | 27 Oct 1999 | 23 Oct 2001 | United Kingdom | June 1935 | Sedgebrook Manor, Grantham, Lincolnshire, NG32 2EU |
| RITBLAT, Jillian Rosemary, Lady RESIGNED | Director | 15 Dec 2010 | 30 Dec 2025 | England | December 1942 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| ROTHERMERE, Claudia Caroline Viscountess, Viscountess RESIGNED | Director | 18 Jun 2008 | 20 Apr 2017 | United Kingdom | May 1967 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| SAATCHI, Maurice RESIGNED | Director | 11 Sep 2001 | 31 Dec 2006 | | June 1946 | 36 Golden Square, London, W1F 9EG |
| SALISBURY, Marjory, The Dowager Marchioness Of RESIGNED | Director | | 09 Jan 2017 | United Kingdom | July 1922 | 18 Chelsea Square, London, SW3 6LF |
| SAUNDERS, Nicola Jane RESIGNED | Director | 23 Jun 2021 | 11 Oct 2022 | United Kingdom | August 1971 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| SIMMS, Barbara Ann RESIGNED | Director | 12 Dec 2002 | 16 Sep 2015 | United Kingdom | December 1946 | 15 Richardsons Mews, London, W1T 6BS |
| THACKER, Christopher John Charles, Dr RESIGNED | Director | 27 Oct 1999 | 12 Nov 2003 | | March 1931 | 7 Milkwell, Donhead St. Andrew, Shaftesbury, Dorset, SP7 9LQ |
| THOMSON, David Richmond RESIGNED | Director | 24 Apr 2001 | 31 Oct 2003 | | October 1934 | Coppice House, Manor Lane,Glaston, Oakham, Leicestershire, LE15 9BT |
| TITCHMARSH, Alan RESIGNED | Director | 01 Nov 2009 | 24 Jun 2020 | United Kingdom | May 1949 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| WATERFIELD, Giles RESIGNED | Director | 28 Feb 2010 | 13 Dec 2016 | United Kingdom | January 1960 | The Garden Museum, Lambeth Palace Road, London, SE1 7LB |
| WHITE, Christopher, Dr RESIGNED | Director | | 31 Jul 1997 | | September 1930 | The Ashmolean Museum, Braumont Street, Oxford |
| WILKINSON, Henry Russell RESIGNED | Director | 06 Nov 1996 | 30 Sep 2000 | | March 1936 | 4 Avenue Road, Epsom, Surrey, KT18 7QT |