| COLLIER, Sam John ACTIVE | Secretary | 31 May 2024 | | | | Castle Environmental, Crompton Road, Ilkeston, Derbyshire, DE7 4BG |
| COLLIER, Sam John ACTIVE | Director | 31 May 2024 | | United Kingdom | November 1993 | Castle Environmental, Crompton Road, Ilkeston, Derbyshire, DE7 4BG |
| PALMER-JONES, David Courtenay ACTIVE | Director | 24 Feb 2023 | | United Kingdom | April 1963 | 5th Floor, 15 Golden Square, London, W1F 9JG, United Kingdom |
| RAUCH, John Hugo ACTIVE | Director | 01 Apr 2026 | | United Kingdom | November 1970 | Castle Environmental, Crompton Road, Ilkeston, Derbyshire, DE7 4BG |
| MEISTER, Peter Karl RESIGNED | Secretary | 25 Feb 1998 | 29 Sep 2015 | | | Castle Environmental, Crompton Road, Ilkeston, Derbyshire, DE7 4BG |
| SMITH, Andrew Marc RESIGNED | Secretary | 29 Sep 2015 | 31 May 2024 | | | Castle Environmental, Crompton Road, Ilkeston, Derbyshire, DE7 4BG |
| TEMPLE SECRETARIES LIMITED RESIGNED | Nominee Secretary | 04 Nov 1997 | 25 Feb 1998 | | | 788-790 Finchley Road, London, NW11 7TJ |
| BLACKLER, Paul George RESIGNED | Director | 22 Oct 1999 | 14 Jun 2004 | | October 1969 | 16 Harewood Road, Allestree, Derby, Derbyshire, DE22 2JN |
| DIGGLE, Thomas Charles Andrew RESIGNED | Director | 22 May 2015 | 24 Feb 2023 | England | June 1961 | Castle Environmental, Crompton Road, Ilkeston, Derbyshire, DE7 4BG |
| ELLIOTT, Andrew Mark RESIGNED | Director | 22 Oct 1999 | 31 Jul 2024 | England | November 1966 | Castle Environmental, Crompton Road, Ilkeston, Derbyshire, DE7 4BG |
| ELLISON, David Robert RESIGNED | Director | 01 May 1998 | 24 Feb 2023 | England | August 1942 | Castle Environmental, Crompton Road, Ilkeston, Derbyshire, DE7 4BG |
| HEWITT, Michael Roger RESIGNED | Director | 25 Feb 1998 | 24 Feb 2023 | England | February 1942 | Castle Environmental, Crompton Road, Ilkeston, Derbyshire, DE7 4BG |
| HUMPHRISS, David Roy RESIGNED | Director | 01 Aug 2024 | 31 Mar 2026 | United Kingdom | July 1981 | Castle Environmental, Crompton Road, Ilkeston, Derbyshire, DE7 4BG |
| MEISTER, Peter Karl RESIGNED | Director | 25 Feb 1998 | 31 Dec 2015 | United Kingdom | November 1964 | Castle Environmental, Crompton Road, Ilkeston, Derbyshire, DE7 4BG |
| ROBINSON, Helen Mary RESIGNED | Director | 22 May 2015 | 24 Feb 2023 | England | October 1960 | Castle Environmental, Crompton Road, Ilkeston, Derbyshire, DE7 4BG |
| SMITH, Andrew Marc RESIGNED | Director | 29 Sep 2015 | 31 May 2024 | United Kingdom | August 1975 | Castle Environmental, Crompton Road, Ilkeston, Derbyshire, DE7 4BG |
| COMPANY DIRECTORS LIMITED RESIGNED | Nominee Director | 04 Nov 1997 | 25 Feb 1998 | | | 788-790 Finchley Road, London, NW11 7TJ |