| RUDDER, Jennifer Lynn ACTIVE | Director | 24 Jul 2025 | | England | January 1973 | Bucknalls Lane, Garston, Watford, Hertfordshire, WD25 9XX |
| SHAPIRO, Ian David ACTIVE | Director | 09 Sep 2025 | | England | May 1974 | Bucknalls Lane, Garston, Watford, Hertfordshire, WD25 9XX |
| HORAN, James Francis RESIGNED | Secretary | 17 Apr 1998 | 29 Sep 2008 | | | 1 Westmoreland Place, Ealing, London, W5 1QE |
| SEVERNSIDE SECRETARIAL LIMITED RESIGNED | Nominee Secretary | 17 Apr 1998 | 17 Apr 1998 | | | 14-18 City Road, Cardiff, CF24 3DL |
| ATKINSON, Carol Jane RESIGNED | Director | 04 May 2000 | 30 Sep 2012 | England | April 1959 | 26 Betjeman Way, Hemel Hempstead, Hertfordshire, HP1 3HH |
| BONFIELD, Peter William, Dr RESIGNED | Director | 19 Jan 2012 | 20 Apr 2018 | England | June 1963 | Bucknalls Lane, Garston, Watford, Hertfordshire, WD25 9XX |
| BRIERLEY, Peter RESIGNED | Director | 19 Sep 2002 | 18 Dec 2003 | England | February 1953 | 37 Stapleton Road, Formby, Liverpool, L37 2YT |
| CHARLESWORTH, Gillian Mary RESIGNED | Director | 07 Nov 2024 | 09 Sep 2025 | England | December 1961 | Bucknalls Lane, Garston, Watford, Hertfordshire, WD25 9XX |
| FIELD, Philip John RESIGNED | Director | 03 May 2001 | 31 Dec 2009 | | April 1944 | 109 Flitwick Road, Ampthill, Bedford, MK45 2NT |
| HARDY, Richard John RESIGNED | Director | 18 Apr 2013 | 22 Jun 2017 | United Kingdom | May 1954 | Bucknalls Lane, Garston, Watford, Hertfordshire, WD25 9XX |
| HERBERT, Andrew Charles RESIGNED | Director | 24 Mar 2020 | 17 Jan 2023 | England | October 1962 | Bucknalls Lane, Garston, Watford, Hertfordshire, WD25 9XX |
| HEUSCH, Russell RESIGNED | Director | 29 Sep 2008 | 24 Feb 2016 | United Kingdom | June 1960 | 58, Tenby Avenue, Harrow, Middlesex, HA3 8RX |
| HORAN, James Francis RESIGNED | Director | 17 Apr 1998 | 29 Sep 2008 | United Kingdom | July 1952 | 1 Westmoreland Place, Ealing, London, W5 1QE |
| HORSLEY, Stuart Edward RESIGNED | Director | 03 May 2001 | 31 Oct 2001 | | September 1945 | The Red House, Back Lane, Cropwell Butler, Nottingham, NG12 3AD |
| PICKAVANCE, David RESIGNED | Director | 04 May 2000 | 26 Jun 2000 | | January 1954 | 31 Lock Road, Marlow, Buckinghamshire, SL7 1QN |
| SMITH, Deborah Anita, Dr RESIGNED | Director | 29 Apr 2004 | 20 Mar 2008 | England | August 1960 | 158 Picotts End, Hemel Hempstead, Hertfordshire, HP1 3AU |
| STEEDMAN, Robert Scott RESIGNED | Director | 01 Apr 2011 | 17 Nov 2011 | England | September 1958 | 42, Hillgate Place, London, W8 7ST, United Kingdom |
| TANNER, Anthony Richard RESIGNED | Director | 09 Apr 2019 | 24 Mar 2020 | Scotland | April 1963 | Bucknalls Lane, Garston, Watford, Hertfordshire, WD25 9XX |
| TRAFFORD, Niall Gerard RESIGNED | Director | 24 Feb 2016 | 09 Apr 2019 | England | March 1962 | Bucknalls Lane, Garston, Watford, Hertfordshire, WD25 9XX |
| WIJERATNE, Vinodha Soysa RESIGNED | Director | 24 Jan 2023 | 07 Nov 2024 | Wales | October 1965 | Bucknalls Lane, Garston, Watford, Hertfordshire, WD25 9XX |
| WYATT, Martin John, Dr RESIGNED | Director | 17 Apr 1998 | 01 Jan 2014 | England | March 1950 | The Birches, School Lane, Essendon, Hertfordshire, AL9 6HD |
| SEVERNSIDE NOMINEES LIMITED RESIGNED | Nominee Director | 17 Apr 1998 | 17 Apr 1998 | | | 14-18 City Road, Cardiff, CF24 3DL |