| HAMBLIN, Matthew William ACTIVE | Director | 12 Jul 2022 | | United Kingdom | March 1967 | Unit 18, Simwood Court, Beacon Way, Beacon Business Park, Stafford, ST18 0WL, United Kingdom |
| HEARD, Nicholas James RESIGNED | Secretary | 24 Oct 2012 | 16 Apr 2014 | | | 11th, Floor, Colmore Plaza 20 Colmore Circus Queensway, Birmingham, West Midlands, B4 6AT, United Kingdom |
| LANCASTER, Jeremy Graham, Mr. RESIGNED | Secretary | 21 Aug 1999 | 18 Dec 2009 | | | Pearl House, Barley Maedow, Hinstock, Market Drayton, Shropshire, TF9 2UB, England |
| MARTIN, John William RESIGNED | Secretary | 01 Apr 1992 | 31 Mar 1997 | | | 4 High Street, Coton, Cambridge, Cambridgeshire, CB3 7PL |
| NESBIT, David Norman RESIGNED | Secretary | 26 Apr 1999 | 20 Aug 1999 | | | 3 Park Hall, Crooms Hill, London, SE10 8HQ |
| RAYMENT, Paul Stephen RESIGNED | Secretary | 01 Apr 1997 | 26 Apr 1999 | | | 14 Bridgeman Drive, Houghton Regis, Dunstable, Bedfordshire, LU5 5SR |
| ROLLS, Neil Ian RESIGNED | Secretary | 18 Dec 2009 | 24 Oct 2012 | | | Precision House, Arden Road, Alcester, Warwickshire, B49 6HN, United Kingdom |
| WESTLEY, Adam David Christopher RESIGNED | Secretary | 16 Apr 2014 | 22 Dec 2015 | | | 11th, Floor, Colmore Plaza 20 Colmore Circus Queensway, Birmingham, West Midlands, B4 6AT, United Kingdom |
| WOOLF, Gordon, Financial Director RESIGNED | Secretary | | 31 Mar 1992 | | | 5 Hartfield Close, Elstree, Borehamwood, Hertfordshire, WD6 3JD |
| BARNES, Garry Elliot, Mr. RESIGNED | Director | 24 Oct 2012 | 22 Dec 2015 | England | August 1970 | 11th, Floor, Colmore Plaza 20 Colmore Circus Queensway, Birmingham, West Midlands, B4 6AT, United Kingdom |
| BETTRAY, Theodor Johannes RESIGNED | Director | 26 Mar 2003 | 24 Oct 2012 | Germany | July 1963 | 362 C/O Elster Group, Frankenstrasse, Essen, 45133, Germany |
| BUTTERY, Paul Warwick RESIGNED | Director | 19 Jan 2001 | 28 Mar 2003 | England | March 1957 | Foppolo, Rowan Lane, Ashley Heath, Market Drayton, Salop, TF9 4PT |
| CLARKE, David John RESIGNED | Director | 26 Apr 1999 | 21 Jun 2002 | England | March 1954 | Minnis End, Stelling Minnis, Canterbury, Kent, CT4 6AH |
| CRAWFORD, Jonathon Colin Fyfe RESIGNED | Director | 11 Feb 2014 | 22 Dec 2015 | United Kingdom | April 1973 | 11th, Floor, Colmore Plaza 20 Colmore Circus Queensway, Birmingham, West Midlands, B4 6AT, United Kingdom |
| DAY, Colin Richard RESIGNED | Director | 17 Feb 1993 | 10 Feb 1995 | | March 1955 | 2 Appleton Close, Snells Lane, Amersham, Buckinghamshire, HP7 9QQ |
| ESCHENRODER, Gerhard RESIGNED | Director | 26 Mar 2003 | 30 Sep 2005 | | January 1954 | Huttropstrasse 60, D-45138 Essen, FOREIGN, Germany |
| FIRTH, Stuart Martin RESIGNED | Director | 12 Jun 1995 | 05 Feb 1996 | England | December 1950 | Heather Lea, Nursery Lane, Ripponden, Sowerby Bridge, West Yorkshire, HX6 4PD |
| GABRIEL, Timothy John RESIGNED | Director | 08 Nov 2007 | 26 Jan 2012 | Great Britain | November 1958 | 130, Camford Way, Luton, Bedfordshire, LU3 3AN, England |
| GABRIEL, Timothy John RESIGNED | Director | 01 Apr 1992 | 26 Apr 1999 | | November 1958 | 5 London End, Newton Longville, Milton Keynes, Buckinghamshire, MK17 0AX |
| GALLEY, Michael John RESIGNED | Director | 07 Jul 1994 | 30 Sep 1998 | United Kingdom | December 1948 | Ivy Walls Birch Heath Lane, Christleton, Chester, CH3 7AP |
| GRAYSON, Patrick Terence RESIGNED | Director | 01 Jan 1994 | 31 Dec 1994 | | October 1940 | 89 Crabtree Lane, Harpenden, Hertfordshire, AL5 5PX |
| HARPUM, Richard RESIGNED | Director | 20 Jun 2002 | 21 Mar 2003 | | July 1951 | 2 Parr Close, Impington, Cambridge, Cambridgeshire, CB4 9YH |
| HENDERSON, John Wilson RESIGNED | Director | | 31 Mar 1993 | | July 1935 | April Cottage, West Wickham, Cambridge, CB1 6SB |
| HOWARD, Lindsay RESIGNED | Director | 18 Dec 2015 | 30 Sep 2018 | United Kingdom | February 1974 | Honeywell House, Skimped Hill Lane, Bracknell, Berks, RG12 1EB, United Kingdom |
| HUGHES, David Alun RESIGNED | Director | 31 Aug 1999 | 31 Mar 2001 | United Kingdom | November 1961 | Celandine House Hipplecote, Martley, Worcester, Worcestershire, WR6 6PW |
| KRESS, Kolja RESIGNED | Director | 18 Dec 2015 | 31 Dec 2016 | Germany | March 1975 | Honeywell House, Skimped Hill Lane, Bracknell, Berks, RG12 1EB, United Kingdom |
| LOWE, Garfield Joseph RESIGNED | Director | 18 Sep 2020 | 01 Jan 2022 | United Kingdom | October 1970 | The Arnold Centre, Paycocke Road, Basildon, SS14 3EA, England |
| MARTIN, Geoffrey Peter RESIGNED | Director | 24 Oct 2012 | 22 Dec 2015 | United Kingdom | October 1967 | 11th, Floor, Colmore Plaza 20 Colmore Circus Queensway, Birmingham, West Midlands, B4 6AT, United Kingdom |
| MARTIN, John William RESIGNED | Director | 01 Apr 1992 | 22 Dec 2000 | | January 1939 | 4 High Street, Coton, Cambridge, Cambridgeshire, CB3 7PL |
| MCLAUGHLIN, William RESIGNED | Director | 01 Oct 1998 | 29 Nov 2002 | | September 1950 | Balebeck, Lower Road Hardwick, Aylesbury, Buckinghamshire, HP22 4DZ |
| MELVILLE, Paul RESIGNED | Director | 30 Jan 2019 | 24 Apr 2020 | United Kingdom | September 1966 | Honeywell House, Skimped Hill Lane, Bracknell, Berkshire, RG12 1EB, England |
| NOTLEY, John Percival William RESIGNED | Director | | 30 Sep 1998 | | November 1935 | Newbury, Hunston, Bury St. Edmunds, Suffolk, IP31 3EN |
| O'NEILL, James Grant RESIGNED | Director | 01 Jan 2022 | 12 Jul 2022 | United Kingdom | November 1972 | Opus House, Priestly Court, Staffordshire Technology Park, Stafford, ST18 0LQ, United Kingdom |
| RAYMENT, Paul Stephen RESIGNED | Director | 01 Apr 1998 | 26 Apr 1999 | | May 1965 | 14 Bridgeman Drive, Houghton Regis, Dunstable, Bedfordshire, LU5 5SR |
| ROGERS, Ivor Thomas RESIGNED | Director | | 26 Apr 1999 | | November 1945 | 2 Broadmeadow Ride, St Ippolyts, Hitchin, Hertfordshire, SG4 7ST |
| SIBLEY, Anthony Robert John RESIGNED | Director | | 31 Mar 1994 | | September 1932 | 8 Old Rectory Close, Harpenden, Hertfordshire, AL5 2UD |
| STOTEN, Terence Arthur RESIGNED | Director | | 31 Mar 1992 | | February 1936 | 3 Upton Close, Luton, Bedfordshire, LU2 7BH |
| THOMSON, David James RESIGNED | Director | 31 Dec 2016 | 22 Dec 2017 | England | July 1964 | Honeywell House, Skimped Hill Lane, Bracknell, Berkshire, RG12 1EB, England |
| THOMSON, David James RESIGNED | Director | 04 Sep 2007 | 24 Oct 2012 | England | July 1964 | Precision House, Arden Road, Alcester, Warwickshire, B49 6HN, United Kingdom |
| VINCENT, Gary Mark RESIGNED | Director | 30 Sep 2018 | 18 Sep 2020 | England | October 1971 | Honeywell House, Skimped Hill Lane, Bracknell, Berkshire, RG12 1EB, England |
| VINCENT, Gary Mark RESIGNED | Director | 23 Jan 2012 | 24 Oct 2012 | England | October 1971 | Precision House, Arden Road, Alcester, Warwickshire, B49 6HN, United Kingdom |
| WOOLF, Gordon, Financial Director RESIGNED | Director | | 31 Mar 1992 | | December 1926 | 5 Hartfield Close, Elstree, Borehamwood, Hertfordshire, WD6 3JD |