| OSBORNE, Anthony Malcolm ACTIVE | Secretary | 22 Jun 1992 | | | | Geotechnical Centre, Rougham Industrial Estate, Rougham, Bury St Edmunds, Suffolk, IP30 9ND, United Kingdom |
| GODFREY, Hugh Edward ACTIVE | Director | | | United Kingdom | August 1944 | Endeavour House, Perkins Road, Bury St Edmunds, Suffolk, IP30 9XA, United Kingdom |
| GODFREY, Justin Alexander ACTIVE | Director | 28 Feb 2018 | | England | September 1975 | Endeavour House, Perkins Road, Bury St Edmunds, Suffolk, IP30 9XA, United Kingdom |
| OSBORNE, Anthony Malcolm ACTIVE | Director | | | England | August 1955 | Geotechnical Centre, Rougham Industrial Estate, Rougham, Bury St Edmunds, Suffolk, IP30 9ND, United Kingdom |
| STUPAK, Anthony Leo ACTIVE | Director | 28 Feb 2018 | | England | July 1984 | C/O Mgs Geotechnical Centre, Rougham Industrial Estate, Rougham, Bury St. Edmunds, Suffolk, IP30 9ND, England |
| HEMPSON, Harold Roy RESIGNED | Secretary | | 22 Jun 1992 | | | 35 Westbury Avenue, Bury St Edmunds, Suffolk, IP33 3QG |
| AGNEW, George Anthony RESIGNED | Director | | 10 Dec 2008 | | August 1953 | Freewood Cottage, Bradfield St George, Bury St Edmunds, Suffolk, IP30 0BB |
| BARFORD, Jean Helen RESIGNED | Director | 01 Nov 1992 | 22 Dec 2008 | | May 1938 | 22 Dukes Meadow, Cockfield, Bury St Edmunds, Suffolk, IP30 0HR |
| CHALLACOMBE, Nicholas Keith RESIGNED | Director | | 01 Nov 1992 | England | March 1944 | Two Oaks, East Barton, Bury St Edmunds, Suffolk, IP31 2QY |
| CHRISTIE, John Grant RESIGNED | Director | 01 Nov 1992 | 31 Jul 1995 | | April 1938 | The Hollies Green Road, Woolpit, Bury St Edmunds, Suffolk, IP30 9QZ |
| CURTIS, Kingsley Wilton RESIGNED | Director | | 03 Sep 2015 | United Kingdom | July 1937 | Unit 10 Maxwell Road, Rougham Industrial Estate, Rougham, Bury St. Edmunds, Suffolk, IP30 9ND, England |
| GEDDES, Brian Sydney RESIGNED | Director | | 08 Jul 1993 | | September 1934 | Maltings Barn Church Road, Chevington, Bury St Edmunds, Suffolk, IP29 5QH |
| HEMPSON, Harold Roy RESIGNED | Director | | 22 Jun 1992 | | February 1928 | 35 Westbury Avenue, Bury St Edmunds, Suffolk, IP33 3QG |
| WILLCOX, Gladys Florence RESIGNED | Director | 01 Nov 1992 | 01 Apr 1997 | United Kingdom | April 1929 | 16 Majors Close, Chedburgh, Bury St Edmunds, Suffolk, IP29 4UN |
| WOLFE, Edward David RESIGNED | Director | | 18 Mar 2016 | England | January 1937 | Dunmow Park, Braintree Road, Dunmow, Essex, CM6 1HS, United Kingdom |