| LISTER, Christopher ACTIVE | Director | 05 Apr 1999 | | England | May 1951 | C/O Envirotec Limited, Desborough Park Road, High Wycombe, Buckinghamshire, HP12 3BX, England |
| LISTER, Katie Arabella ACTIVE | Director | 01 Sep 2025 | | England | October 1995 | C/O Envirotec Limited, Desborough Park Road, High Wycombe, Buckinghamshire, HP12 3BX, England |
| LISTER, Nicholas Charles ACTIVE | Director | 01 Jun 2023 | | England | June 1993 | C/O Envirotec Limited, Desborough Park Road, High Wycombe, Buckinghamshire, HP12 3BX, England |
| WATSON, Alexander Ernest ACTIVE | Director | 03 Mar 2014 | | England | December 1937 | C/O Envirotec Limited, Desborough Park Road, High Wycombe, Buckinghamshire, HP12 3BX, England |
| EAST, John Robert RESIGNED | Secretary | 13 Sep 2006 | 12 Feb 2007 | | | March House, The Ridge, Cold Ash, Thatcham, RG18 9HY |
| EAST, John Robert RESIGNED | Secretary | 22 Oct 2004 | 29 Jul 2005 | | | March House, The Ridge, Cold Ash, Thatcham, RG18 9HY |
| MARTIN, Peter William RESIGNED | Secretary | 31 Mar 1999 | 05 Apr 1999 | | | Hollow Combe, Dome Hill Park, London, SE26 6SP |
| MOODY, Susan Mary RESIGNED | Secretary | | 31 Mar 1999 | | | Squirrels Leap Bottom Lane, Seer Green, Beaconsfield, Buckinghamshire, HP9 2UH |
| O'DONNELL, David, Mr. RESIGNED | Secretary | 12 Feb 2007 | 11 Feb 2011 | | | Envirotec Ltd, Desborough Park Road, High Wycombe, Buckinghamshire, HP12 3BX, United Kingdom |
| RASZPLA, Marian Jan RESIGNED | Secretary | 02 Aug 2005 | 13 Sep 2006 | | | Well End Elm Road, Penn, High Wycombe, Bucks, HP10 8LF |
| TOWERS, Nicholas RESIGNED | Secretary | 26 May 2000 | 22 Oct 2004 | | | 20 Wordsworth Close, Brackley, Northamptonshire, NN13 5GF |
| ZANT BOER, Ian RESIGNED | Secretary | 05 Apr 1999 | 26 May 2000 | | | Grange Meadow, Duncote, Towcester, Northamptonshire, NN12 8AH |
| BROWN, Stephen Paul RESIGNED | Director | 01 Aug 2004 | 30 Jun 2013 | England | September 1961 | Envirotec Ltd, Desborough Park Road, High Wycombe, Buckinghamshire, HP12 3BX, United Kingdom |
| MOODY, Rodney Leonard RESIGNED | Director | | 05 May 2001 | | February 1947 | 11 Wethered Park, Marlow, Buckinghamshire, SL7 2BH |
| MOODY, Susan Mary RESIGNED | Director | | 31 Mar 1999 | | April 1949 | Squirrels Leap Bottom Lane, Seer Green, Beaconsfield, Buckinghamshire, HP9 2UH |
| O'DONNELL, David, Mr. RESIGNED | Director | 12 Feb 2007 | 11 Feb 2011 | United Kingdom | March 1958 | Envirotec Ltd, Desborough Park Road, High Wycombe, Buckinghamshire, HP12 3BX, United Kingdom |
| RASZPLA, Marian Jan RESIGNED | Director | 02 Aug 2005 | 13 Sep 2006 | | June 1952 | Well End Elm Road, Penn, High Wycombe, Bucks, HP10 8LF |
| ROBERTSON, Finlay Charles RESIGNED | Director | 06 Oct 1999 | 31 Mar 2010 | | September 1954 | 5 Cherry Tree House, 6 Wood Lane, Ruislip, Middlesex, HA4 6EX |
| ROBERTSON, Finlay Charles RESIGNED | Director | | 31 Mar 1999 | | September 1954 | 11 Challoners Close, East Molsey, Surrey, KT8 0DW |
| SAMPSON, Colin George RESIGNED | Director | 01 Sep 1996 | 27 Feb 1998 | | December 1952 | The Downs Aylesbury Road, Great Missenden, Buckinghamshire, HP16 9AU |
| WILD, Daniel Thomas RESIGNED | Director | 26 Sep 2012 | 27 Jan 2014 | England | June 1972 | Envirotec Ltd, Desborough Park Road, High Wycombe, Buckinghamshire, HP12 3BX, United Kingdom |