| GRIFFITHS, Helen Veronica ACTIVE | Secretary | 26 Feb 2010 | | | | Building 8, Croxley Green Business Park, Hatters Lane, Watford, Herts, WD18 8PX |
| GRIFFITHS, Helen Veronica ACTIVE | Director | 26 Feb 2010 | | England | January 1962 | Building 8, Croxley Green Business Park, Hatters Lane, Watford, Herts, WD18 8PX |
| HUBER, Frank ACTIVE | Director | 19 May 2022 | | Germany | February 1971 | Building 8, Croxley Green Business Park, Hatters Lane, Watford, Herts, WD18 8PX |
| WHITE, Susan ACTIVE | Director | 11 Jan 2016 | | United Kingdom | February 1972 | Building 8, Croxley Green Business Park, Hatters Lane, Watford, Hertfordshire, WD18 8PX, United Kingdom |
| BROWN, Nicholas Edward Bridgmore RESIGNED | Secretary | 21 Jun 2006 | 01 May 2007 | | | Dove Cottage, 22 Frogmore Lane, Long Crendon, Bucks, HP18 9DZ |
| CHARLTON, Terence John RESIGNED | Secretary | 01 Jan 1998 | 28 Feb 2001 | | | 61 Thames Street, Weybridge, Surrey, KT13 8LA |
| CLOUGH, Paul Richard RESIGNED | Secretary | 01 Jan 1998 | 26 Feb 2010 | | | 28 Rymill Close, Bovingdon, Hertfordshire, HP3 0JA |
| ISAACS, Helen Veronica RESIGNED | Secretary | 28 Feb 2001 | 21 Jun 2006 | | | 6 Brenchwood Close, Downley, High Wycombe, Buckinghamshire, HP13 5UP |
| ROGERS, Helen Susan Fletcher RESIGNED | Secretary | | 31 Dec 1997 | | | Conway House 5 Furlong Lane, Totternhoe, Dunstable, Bedfordshire, LU6 1QR |
| ALGAR, David Stanley RESIGNED | Director | 20 Nov 2000 | 31 Mar 2003 | England | April 1961 | Ye Old Coach House, Woodburn Town, Buckinghamshire, HP10 0PW |
| ALLEN, Jane Clare RESIGNED | Director | 20 Dec 2004 | 17 Dec 2007 | United Kingdom | May 1958 | 2 Garden Close, Watford, Hertfordshire, WD17 3DP |
| BALL, Geoffrey Ronald RESIGNED | Director | 04 Mar 1993 | 30 Sep 2000 | | May 1945 | Glebe Farm Northcroft, Weedon, Aylesbury, Buckinghamshire, HP22 4NR |
| BALL, Philip David RESIGNED | Director | 08 Oct 2013 | 31 Dec 2015 | United Kingdom | January 1967 | Building 8, Croxley Green Business Park, Hatters Lane, Watford, Herts, WD18 8PX |
| BAUST, Julian Paul Fraser RESIGNED | Director | 18 Oct 2005 | 26 Feb 2010 | England | December 1957 | Hemelone, Boundary Way, Hemel Hempstead, Herts, HP2 7YU |
| BLACKWELL, Peter Edward RESIGNED | Director | 01 May 2001 | 31 Jan 2005 | United Kingdom | September 1948 | 262 Grasmere Way, Leighton Buzzard, Bedfordshire, LU7 7QB |
| BUTLER, John Douglas RESIGNED | Director | 14 Sep 2010 | 08 Jan 2012 | United Kingdom | April 1965 | Hemel One, Boundary Way, Hemel Hempstead, Hertfordshire, HP2 7YU |
| CLOUGH, Paul Richard RESIGNED | Director | 17 Mar 2009 | 26 Feb 2010 | United Kingdom | November 1948 | Hemelone, Boundary Way, Hemel Hempstead, Herts, HP2 7YU |
| CULLIMORE, Philip Andrew RESIGNED | Director | 15 Jan 2013 | 28 Apr 2017 | United Kingdom | September 1965 | Building 8, Croxley Green Business Park, Hatters Lane, Watford, Herts, WD18 8PX |
| DUFFIN, Harold Richard RESIGNED | Director | 29 Apr 2003 | 09 Sep 2004 | | April 1952 | 57 Winchester Lane, Richmond Hill, Ontario, Canada L4c 6yf, FOREIGN |
| GIBBONS, Phillip Timothy RESIGNED | Director | 26 Feb 2010 | 30 Sep 2011 | United Kingdom | July 1969 | Hemel One, Boundary Way, Hemel Hempstead, Hertfordshire, HP2 7YU |
| GUINN, Jane Louise RESIGNED | Director | 20 Dec 2004 | 01 May 2007 | England | December 1959 | 5 Waterford Common, Waterford, Hertford, Hertfordshire, SG14 2QD |
| HARDING, Michael George RESIGNED | Director | 17 Mar 2009 | 01 Oct 2012 | United Kingdom | March 1951 | Hemel One, Boundary Way, Hemel Hempstead, Hertfordshire, HP2 7YU |
| JORNES, Neil Francis RESIGNED | Director | 17 Dec 2007 | 26 Feb 2010 | | August 1954 | Hemelone, Boundary Way, Hemel Hempstead, Herts, HP2 7YU |
| LAMBERT, Derek Alan RESIGNED | Director | 01 Apr 2006 | 30 Jun 2014 | England | September 1961 | Building 8, Croxley Green Business Park, Hatters Lane, Watford, Herts, WD18 8PX |
| LOCK, Dennis Gordon, Dr RESIGNED | Director | 01 Feb 2004 | 31 Oct 2007 | Uk | August 1950 | 22 Sherwoods Road, Watford Heath, Watford, Hertfordshire, WD19 4AZ |
| MATHER, Kathren Margaret RESIGNED | Director | 15 Feb 1999 | 01 May 2001 | | June 1962 | 21 Lancaster Road, St Albans, Hertfordshire, AL1 4EP |
| MCCONNELL, James David Herbert RESIGNED | Director | 09 Sep 2004 | 19 Sep 2005 | United Kingdom | December 1962 | 3 Wilmington Avenue, London, W4 3HA |
| MCGOWAN, Brian RESIGNED | Director | 26 Feb 2010 | 30 Sep 2011 | England | February 1959 | Hemel One, Boundary Way, Hemel Hempstead, Hertfordshire, HP2 7YU |
| NELANDER, David Hoover RESIGNED | Director | | 31 Dec 1992 | | June 1937 | 33 Main Avenue, Moor Park, Northwood, Middlesex, HA6 2LH |
| O'GRADY, John Gerard RESIGNED | Director | 23 Feb 2017 | 01 Apr 2022 | United States | February 1964 | Building 8, Croxley Green Business Park, Hatters Lane, Watford, Hertfordshire, WD18 8PX |
| O'GRADY, John Gerard RESIGNED | Director | 05 Dec 2011 | 17 Sep 2013 | United States | February 1964 | Hemel One, Boundary Way, Hemel Hempstead, Hertfordshire, HP2 7YU, Uk |
| O'NEILL, Alan Dennis RESIGNED | Director | 01 Jan 1998 | 30 Jun 2001 | | March 1945 | St Michaels Croft, Durrants Lane, Berkhamsted, Hertfordshire, HP4 3TR |
| O'NEILL, Alan Dennis RESIGNED | Director | 04 Mar 1993 | 01 Aug 1996 | | March 1945 | 65 Berkeley Avenue, Chesham, Buckinghamshire, HP5 2RP |
| PAYNE, Alan William, Mr. RESIGNED | Director | 08 Jul 2008 | 30 Jun 2009 | United Kingdom | December 1950 | 1 The Maltings, 41 High Street, Chesterton, Cambridge, Cambridgeshire, CB1 1NQ |
| PROCTOR, Gordon David RESIGNED | Director | | 31 Aug 1994 | | September 1949 | Otways Washington Road, Storrington, Pulborough, West Sussex, RH20 4BY |
| QUIERS, Francis Jean RESIGNED | Director | | 31 Oct 1993 | | June 1933 | 75 Avenue De Breteuil, 75015 Paris, FOREIGN, France |
| RAYNER, Malcolm Alan John, Dr RESIGNED | Director | 01 Jul 2001 | 01 Feb 2004 | United Kingdom | July 1945 | 25 Dinmore, Bovingdon, Hertfordshire, HP3 0QQ |
| ROBINSON, John Stanley RESIGNED | Director | 01 Aug 1996 | 31 Oct 1998 | | January 1946 | 47 Berkeley Avenue, Chesham, Buckinghamshire, HP5 2RW |
| ROGERS, Helen Susan Fletcher RESIGNED | Director | | 31 Dec 1997 | | September 1941 | Conway House 5 Furlong Lane, Totternhoe, Dunstable, Bedfordshire, LU6 1QR |
| RUFFING, Charles Joseph RESIGNED | Director | 15 Jan 2013 | 15 Jan 2016 | Usa | November 1957 | Building 8, Croxley Green Business Park, Hatters Lane, Watford, Herts, WD18 8PX |
| SHAH, Bharat Chimanlal RESIGNED | Director | 01 Jan 1998 | 01 Jun 2000 | United Kingdom | December 1953 | 45 Dene Road, Northwood, Middlesex, HA6 2DD |
| SWEETMAN, Ronald Geoffrey Thomas RESIGNED | Director | 13 Sep 1999 | 31 Mar 2006 | England | April 1952 | 31 High Beeches, Gerrards Cross, Buckinghamshire, SL9 7HX |
| THOMSON, Colin Rodney Buchanan, Mr. RESIGNED | Director | | 01 Jan 1999 | United Kingdom | November 1943 | 24 Longdean Park, Hemel Hempstead, Hertfordshire, HP3 8BZ |
| WATERLOW, Anthony John RESIGNED | Director | | 31 Dec 1997 | England | July 1938 | The Tudor House Lower Plantation, Loudwater, Rickmansworth, Hertfordshire, WD3 4PQ |
| WEBB, David George RESIGNED | Director | 08 Sep 2009 | 31 Dec 2012 | England | February 1965 | Hemelone, Boundary Way, Hemel Hempstead, Herts, HP2 7YU |
| WELLER, Edward Charles, Dr RESIGNED | Director | 23 Oct 2000 | 30 Jun 2008 | | January 1948 | 120 Cotswold Avenue, Bushey, Watford, Hertfordshire, WD23 4QH |
| WILDMAN, Robina Janet RESIGNED | Director | 17 Dec 2007 | 02 Sep 2013 | United Kingdom | May 1963 | Hemelone, Boundary Way, Hemel Hempstead, Herts, HP2 7YU |
| WRIGHT, Terence Richard, Dr RESIGNED | Director | | 15 Mar 2002 | United Kingdom | March 1945 | 182 Headstone Lane, Harrow, Middlesex, HA2 6LY |
| YATES, Erroll John RESIGNED | Director | | 30 Sep 1992 | | January 1930 | 1 Flowton Grove, Hatching Green, Harpenden, Hertfordshire, AL5 2JZ |