| BARKER, Timothy John Austin ACTIVE | Secretary | 25 Jun 2025 | | | | Sizewell Hall, Sizewell, Leiston, Suffolk, IP16 4TX |
| BOSWELL, Tom Simon ACTIVE | Director | 09 May 2023 | | England | May 1977 | 51, Heron Road, Saxmundham, IP17 1WR, England |
| CULLUM, Martin John ACTIVE | Director | 20 Jan 2014 | | England | February 1965 | Sizewell Hall, Sizewell, Leiston, Suffolk, IP16 4TX, England |
| ELPHICK, William ACTIVE | Director | 21 Oct 2019 | | England | November 1951 | Sizewell Hall, Sizewell, Leiston, Suffolk, IP16 4TX |
| GOLDING, Adam Kenneth ACTIVE | Director | 25 Jan 2010 | | England | March 1977 | Sizewell Hall, Sizewell, Leiston, Suffolk, IP16 4TX, England |
| GOLDING, Andrea Elizabeth ACTIVE | Director | 15 May 2024 | | England | June 1975 | Sizewell Hall, Sizewell, Leiston, Suffolk, IP16 4TX |
| JACK, Graham Paul ACTIVE | Director | 23 Sep 2013 | | England | February 1965 | Sizewell Hall, Sizewell, Leiston, Suffolk, IP16 4TX, England |
| LEVETT, Matthew Charles ACTIVE | Director | 25 Jan 2016 | | England | November 1971 | 26, Ridgeway, Stowmarket, IP14 1SW, England |
| PULFORD, Jenny Rebecca ACTIVE | Director | 12 Sep 2016 | | United Kingdom | March 1971 | Whitehouse Farm, Spring Lane, Fordham Heath, Colchester, CO3 9TG, England |
| WILDING, David Felix ACTIVE | Director | 15 May 2017 | | England | May 1960 | Sizewell Hall, Sizewell, Leiston, Suffolk, IP16 4TX |
| BROWN, Graham Michael RESIGNED | Secretary | 25 Jan 2010 | 15 Jul 2020 | | | Sizewell Hall, Sizewell, Leiston, Suffolk, IP16 4TX, England |
| JACK, Margaret RESIGNED | Secretary | | 25 Jan 2010 | | | The Homestead, Drinkstone, Bury St Edmunds, Suffolk, IP30 9TL |
| SERJEANT, Neil RESIGNED | Secretary | 15 Jul 2020 | 14 May 2025 | | | 3, The Wytchwoods, Pettaugh, Stowmarket, IP14 6TB, England |
| BEATON, Mark John RESIGNED | Director | 20 Jan 2003 | 16 May 2016 | United Kingdom | November 1967 | Byron House, Long Green Wortham, Diss, Norfolk, IP22 1PL |
| BEATON, Paula Jane RESIGNED | Director | 24 Jan 2012 | 15 May 2017 | United Kingdom | October 1967 | Sizewell Hall, Sizewell, Leiston, Suffolk, IP16 4TX, England |
| BENNETT, Simon Russell RESIGNED | Director | 20 Sep 1999 | 21 Jan 2002 | | February 1967 | 13 Vicarage Close, Waterbeach, Cambridge, Cambridgeshire, CB5 9QG |
| BROWN, Graham Michael RESIGNED | Director | 12 May 2003 | 11 May 2020 | United Kingdom | June 1961 | 35 Aldis Avenue, Stowmarket, Suffolk, IP14 2DJ |
| FENNING, Lionel Ivan RESIGNED | Director | | 22 Sep 2008 | United Kingdom | November 1933 | Vauxhall Farm, Gt Wenham, Colchester, Essex, CO7 6QQ |
| FENNING, Stephen James RESIGNED | Director | 22 Jan 2007 | 20 May 2013 | United Kingdom | September 1966 | 12, Chapel Road, Mendlesham, Stowmarket, Suffolk, IP14 5SQ, England |
| JACK, Edwin Robert RESIGNED | Director | | 23 Sep 2013 | United Kingdom | March 1939 | The Cedars, 20 Carlton Way, Ipswich, Suffolk, IP4 2TR |
| JACK, Margaret RESIGNED | Director | | 25 Jan 2010 | | July 1939 | The Homestead, Drinkstone, Bury St Edmunds, Suffolk, IP30 9TL |
| JACK, Thomas Victor RESIGNED | Director | | 25 Jan 2010 | England | August 1937 | The Homestead, Drinkstone, Bury St Edmunds, Suffolk, IP30 9TL |
| LEE, Anthony George RESIGNED | Director | | 23 Sep 2002 | | April 1934 | 47 Hardwick Lane, Bury St Edmunds, Suffolk, IP33 2RB |
| LOW, Colin Ian RESIGNED | Director | 15 Sep 2015 | 14 May 2025 | England | September 1968 | 5, Bullen Lane, Bramford, Ipswich, IP8 4JD, England |
| LOW, Melonie Margaret RESIGNED | Director | 15 Sep 2015 | 14 May 2025 | England | March 1971 | 5, Bullen Lane, Bramford, Ipswich, IP8 4JD, England |
| MELLEN, John Henry RESIGNED | Director | | 19 Sep 1994 | | December 1939 | Bloomfields Farm, Blacktile Lane Martlesham, Woodbridge, Suffolk, IP12 4TD |
| RUSHBROOK, Colin Robert RESIGNED | Director | | 13 May 2019 | United Kingdom | December 1947 | 19 Woolner Close, Barham, Ipswich, Suffolk, IP6 0DL |
| RYALL, Christopher RESIGNED | Director | 23 May 2011 | 04 Jan 2016 | United Kingdom | March 1975 | Sizewell Hall, Sizewell, Leiston, Suffolk, IP16 4TX, England |
| RYALL, Louise Elizabeth RESIGNED | Director | 23 May 2011 | 22 Sep 2014 | United Kingdom | July 1976 | Sizewell Hall, Sizewell, Leiston, Suffolk, IP16 4TX, England |
| WARNOCK, Matthew RESIGNED | Director | 23 Jan 2006 | 22 Jan 2018 | United Kingdom | May 1970 | 61 Bantocks Road, Gt Waldingfield, Sudbury, Suffolk, CO10 0RT |
| WARNOCK, Peter Charles RESIGNED | Director | 23 Jan 1995 | 18 Sep 2000 | | February 1951 | 28 Winchester Close, Stowmarket, Suffolk, IP14 1SH |
| WOOD, Mervyn Laurence RESIGNED | Director | | 25 Jan 2010 | | August 1936 | Hill View 11 Beech Rise, Bury St Edmunds, Suffolk, IP33 2QE |