| GRAY, Clive ACTIVE | Secretary | 24 Jun 2026 | | | | Calvert Kielder,, Kielder Water & Forest Park, Hexham, Northumberland, NE48 1BS, England |
| CHARLTON, Anna Maria, Dr ACTIVE | Director | 18 Oct 2007 | | United Kingdom | March 1972 | Calvert Kielder, Kielder Water & Forest Park, Hexham, Northumberland, NE48 1BS, England |
| COCKERILL, Peter John Vincent ACTIVE | Director | 13 Feb 2023 | | United Kingdom | October 1956 | Calvert Kielder, Kielder Water & Forest Park, Hexham, Northumberland, NE48 1BS, England |
| HAZON, Stewart ACTIVE | Director | 22 Mar 2024 | | United Kingdom | November 1971 | Calvert Kielder, Kielder Water & Forest Park, Hexham, Northumberland, NE48 1BS, England |
| HUGHES, Jacqueline Susan ACTIVE | Director | 22 Sep 2023 | | England | May 1953 | Calvert Kielder, Kielder Water & Forest Park, Hexham, Northumberland, NE48 1BS, England |
| KING, Gill ACTIVE | Director | 09 Apr 2022 | | England | October 1961 | Calvert Kielder, Kielder Water & Forest Park, Hexham, Northumberland, NE48 1BS, England |
| SCHOOLER, Marion Fiona ACTIVE | Director | 18 Oct 2007 | | England | August 1962 | Calvert Kielder, Kielder Water & Forest Park, Hexham, Northumberland, NE48 1BS, England |
| SPOOR, Jessica ACTIVE | Director | 25 Mar 2023 | | England | January 1989 | Calvert Kielder, Kielder Water & Forest Park, Hexham, Northumberland, NE48 1BS, England |
| SPOOR, Mark Daniels ACTIVE | Director | 25 Mar 2023 | | England | April 1960 | Calvert Kielder, Kielder Water & Forest Park, Hexham, Northumberland, NE48 1BS, England |
| STRAKER, Peter Henry ACTIVE | Director | 22 Sep 2011 | | England | April 1975 | Calvert Kielder, Kielder Water & Forest Park, Hexham, Northumberland, NE48 1BS, England |
| APPLEBY, Kevin Gordon RESIGNED | Secretary | 14 Dec 2023 | 30 Nov 2025 | | | Calvert Kielder, Kielder Water & Forest Park, Hexham, Northumberland, NE48 1BS, England |
| COCKERILL, Peter John Vincent RESIGNED | Secretary | 30 Mar 1996 | 14 Dec 2023 | | | Lincoln Hill, Hexham, Northumberland, NE46 4BE |
| COCKERILL, Peter John Vincent RESIGNED | Secretary | 03 Apr 1993 | 15 May 1993 | | | The Riding Farmhouse, The Riding, Bellingham Hexham, Northumberland, NE48 2DU |
| KING, Gill RESIGNED | Secretary | 30 Nov 2025 | 24 Jun 2026 | | | 9, Mortimer Terrace, Holywell, Whitley Bay, Tyne & Wear, NE25 0NB, United Kingdom |
| PARKINSON, Richard RESIGNED | Secretary | 15 May 1993 | 30 Mar 1996 | | | High Pastures, Yarrow, Hexham, Northumberland, NE48 1BG |
| SHAKESHAFT, Philip Arthur RESIGNED | Secretary | | 03 Apr 1993 | | | 93 Otto Terrace, Sunderland, Tyne & Wear, SR2 7LR |
| ANDERTON, Roger David RESIGNED | Director | 24 Mar 2018 | 09 Feb 2023 | England | April 1967 | Calvert Kielder, Kielder Water & Forest Park, Hexham, Northumberland, NE48 1BS, England |
| BALFOUR SCOTT, David, Major RESIGNED | Director | 08 Apr 1995 | 20 Mar 1998 | | October 1927 | Langlawhill, Broughton, Biggar, Lanarkshire, ML12 6HL |
| BARNES, Michael Philip RESIGNED | Director | 02 Sep 1998 | 16 Mar 2007 | England | November 1952 | 29 Adeline Gardens, Gosforth, Newcastle Upon Tyne, Tyne & Wear, NE3 4JQ |
| BENSON, Mary Joan RESIGNED | Director | 08 May 1995 | 03 Jul 2000 | | July 1951 | Park Shield, Fourstones, Hexham, Northumberland, NE47 5DY |
| BIRNEY, John David RESIGNED | Director | 02 Sep 1998 | 01 Mar 2012 | United Kingdom | August 1944 | Kelmscott House, 26 Upper Mall, London, W6 9TA |
| BRIDGE, John Neville RESIGNED | Director | 30 Mar 1996 | 07 Apr 2025 | United Kingdom | September 1942 | Calvert Kielder, Kielder Water & Forest Park, Hexham, Northumberland, NE48 1BS, England |
| BRIGGS, Michael James RESIGNED | Director | 12 Apr 2003 | 27 Nov 2006 | | January 1948 | The Riding House, Bellingham, Hexham, Northumberland, NE48 2DU |
| CROMBIE, Alexander Leaster, Professor RESIGNED | Director | 08 Apr 1995 | 29 Mar 2014 | United Kingdom | August 1935 | 19 Graham Park Road, Gosforth, Newcastle Upon Tyne, NE3 4BH |
| CROUCHER, Norman Emry RESIGNED | Director | 08 Apr 1995 | 20 Mar 1998 | | September 1940 | Flat No 2 8 Woodville Gardens, Ealing, London, W5 2LG |
| CROZIER, Fiona RESIGNED | Director | 05 May 2011 | 15 Sep 2015 | United Kingdom | March 1966 | Calvert Trust Kielder, Kielder Water, Hexham, Northumberland , NE48 1BS |
| DRAX, Charles Ranfurly RESIGNED | Director | 31 May 2016 | 07 Apr 2025 | England | June 1962 | Calvert Kielder, Kielder Water & Forest Park, Hexham, Northumberland, NE48 1BS, England |
| DUDDING, Eve RESIGNED | Director | | 30 Mar 1996 | | September 1920 | 109 Jesmond Park West, Newcastle Upon Tyne, Tyne & Wear, NE7 7BY |
| FESTING, Robert Matthew RESIGNED | Director | 08 Apr 1995 | 15 Mar 2008 | | November 1949 | Birks, Tarset, Hexham, Northumberland, NE48 1LA |
| FRYER-SPEDDING, John Henry RESIGNED | Director | 08 Apr 1995 | 01 Feb 2006 | United Kingdom | January 1937 | West Mirehouse, Keswick, Cumbria, CA12 4QE |
| GREEN, Christopher Michael RESIGNED | Director | 08 Apr 2006 | 07 Apr 2025 | United Kingdom | October 1954 | Calvert Kielder, Kielder Water & Forest Park, Hexham, Northumberland, NE48 1BS, England |
| GRISDALE, Robert Frederick RESIGNED | Director | | 08 Apr 1995 | | February 1927 | Whin Crag Portinscale, Keswick, Cumbria, CA12 5RW |
| HAY, Lewis RESIGNED | Director | | 16 Feb 1992 | | June 1918 | 71 Wordsworth Street, Keswick, Cumbria, CA12 4BZ |
| HUNTER, Neil RESIGNED | Director | | 08 Apr 1995 | | November 1932 | 6 Well House Avenue, Leeds, West Yorkshire, LS8 4BY |
| LANSBURY, Terence James RESIGNED | Director | 01 Aug 1992 | 08 Apr 1995 | | June 1926 | Walklands Lonsties, Keswick, Cumbria, CA12 4TD |
| LOYD, Peter Robert RESIGNED | Director | 08 Apr 1995 | 22 Mar 2024 | United Kingdom | September 1942 | Mantle Hill, Hesleyside, Hexham, Northumberland, NE48 2LB |
| NORTHUMBERLAND, Jane, Duchess RESIGNED | Director | 19 Nov 2003 | 27 Apr 2007 | United Kingdom | May 1958 | Alnwick Castle, Alnwick, Northumberland, NE66 1NG |
| PARKINSON, Richard RESIGNED | Director | 15 May 1993 | 07 Apr 2001 | | June 1947 | High Pastures, Yarrow, Hexham, Northumberland, NE48 1BG |
| PATON, David Stuart RESIGNED | Director | 08 Apr 1995 | 21 Aug 1999 | | February 1928 | South Gatehouse, Tarset, Hexham, Northumberland, NE48 1NG |
| PERCY, Elizabeth Diana, Duchess Of Northumberland RESIGNED | Director | 08 Apr 1995 | 03 Apr 2004 | | January 1922 | Alnwick Castle Walkergate, Alnwick, Northumberland, NE66 1NB |
| PRIESTLEY, Mark Simon RESIGNED | Director | 28 Mar 2015 | 14 Mar 2019 | United Kingdom | February 1968 | Vallum Farm, East Wallhouses, Newcastle Upon Tyne, NE18 0LL, United Kingdom |
| PYMAN, Michael Francis RESIGNED | Director | 08 Apr 1995 | 21 Oct 2000 | | April 1925 | Dursley Fencer Hill Park, Gosforth, Newcastle Upon Tyne, Tyne & Wear, NE3 2EA |
| RIDDELL, John Charles Buchanan, Sir RESIGNED | Director | 21 Oct 2000 | 20 Jul 2010 | | January 1934 | Hepple, Morpeth, Northumberland, NE65 7LN |
| ROBB, James Derek RESIGNED | Director | 08 Apr 1995 | 02 Oct 1998 | | December 1921 | 2 Corchester Towers, Corbridge On Tyne, Northumberland, NE45 2NR |
| SPENCER, Simon Charles RESIGNED | Director | 08 Apr 1995 | 23 Mar 2002 | | March 1929 | Redesmouth Hall, Redesmouth, Hexham, Northumberland, NE48 2ER |
| SPOOR, Roger Charlton RESIGNED | Director | | 03 Jul 2011 | United Kingdom | April 1932 | 5 Graham Park Road, Gosforth, Newcastle Upon Tyne, NE3 4BH |
| STEWART, Christopher RESIGNED | Director | 08 Apr 2000 | 14 Sep 2001 | | December 1959 | 33 The Rise, Ponteland, Newcastle Upon Tyne, Tyne & Wear, NE20 9LH |
| STRAKER, Henry RESIGNED | Director | 08 Apr 1995 | 20 Apr 2010 | England | October 1948 | Farnley House, Corbridge, Northumberland, NE45 5RP |
| STRAKER, Michael Ian Bowstead, Sir RESIGNED | Director | 08 Apr 1995 | 31 Aug 1998 | | March 1928 | High Warden, Hexham, Northumberland, NE46 4SR |
| STRAKER, Rodrica Conseulo RESIGNED | Director | 18 Oct 2007 | 31 May 2016 | United Kingdom | November 1963 | Greenshaw House, Hexham, Northumberland, NE46 2PJ |
| THOMPSON, Arthur Roy RESIGNED | Director | 08 Apr 1995 | 01 Sep 1998 | | March 1929 | Bredon Lodge, Church Lane Brimpton, Reading, Berkshire, RG7 4TJ |
| TREVELYAN, Edward Caverley Thornton RESIGNED | Director | 08 Apr 2000 | 23 Mar 2019 | United Kingdom | August 1935 | Low Cross House, 14 Southside, Stamfordham, Newcastle Upon Tyne, Tyne & Wear, NE18 0PB |
| WOOD, John Anthony RESIGNED | Director | | 08 Apr 1995 | United Kingdom | October 1934 | Spout Close Millbeck, Underskiddaw, Keswick, Cumbria, CA12 4PS |
| WRANGHAM, Edward Addison RESIGNED | Director | 08 Apr 1995 | 25 Jun 2009 | | February 1928 | Harehope Hill End, Alnwick, Northumberland, NE66 2DR |