| BUBESTINGER, Cornelia ACTIVE | Director | 31 Oct 2022 | | Austria | January 1980 | Faraday Close, Worthing, West Sussex, BN13 3PL, United Kingdom |
| MCCOOL, David ACTIVE | Director | 25 Jun 2025 | | United States | March 1963 | Faraday Close, Worthing, West Sussex, BN13 3PL, United Kingdom |
| BRADLEY, Peter Derek RESIGNED | Secretary | | 31 Oct 2000 | | | Shalfords, Old Barn Drive Capel, Dorking, Surrey, RH5 5LQ |
| MCCOOL, David RESIGNED | Secretary | 31 Oct 2022 | 25 Jun 2025 | | | Faraday Close, Worthing, West Sussex, BN13 3PL, United Kingdom |
| INVENSYS SECRETARIES LIMITED RESIGNED | Secretary | 31 Oct 2000 | 31 Oct 2022 | | | Schneider Electric, Stafford Park 5, Telford, TF3 3BL, England |
| BATES, Christopher Ralph RESIGNED | Director | 16 Feb 2009 | 30 Nov 2009 | England | November 1963 | Fairfield, 12 Beech Road, Reigate, Surrey, RH2 9LR |
| BECKER, Kelly Jean RESIGNED | Director | 31 Dec 2020 | 31 Oct 2022 | United Kingdom | January 1978 | Schneider Electric, Stafford Park 5, Telford, TF3 3BL, England |
| BRADLEY, Peter Derek RESIGNED | Director | 05 Oct 2000 | 28 Jun 2002 | | June 1947 | Shalfords, Old Barn Drive Capel, Dorking, Surrey, RH5 5LQ |
| CLAYTON, John Reginald William RESIGNED | Director | 01 May 2001 | 31 Dec 2005 | England | December 1950 | Matley House, Grange Lane, Little Dunmow, Great Dunmow, Essex, CM6 3HY |
| COCHRANE, Adam Craven RESIGNED | Director | 01 May 2001 | 31 Jan 2003 | | July 1957 | 41 Highfield Drive, Uxbridge, Middlesex, UB10 8AW |
| DAVIS, William Ian Bruce RESIGNED | Director | 02 Sep 1996 | 18 Jun 2008 | | June 1951 | 132 New Road, Durrington, Worthing, West Sussex, BN13 3HS |
| FABES, Warren Austin RESIGNED | Director | 01 Aug 1999 | 03 Sep 2007 | England | May 1969 | 11 Gorse Avenue, Worthing, West Sussex, BN14 9PG |
| GREEN, Raymond Charles RESIGNED | Director | | 30 Aug 1996 | | May 1952 | 5 Oldwick Meadows, Lavant, Chichester, West Sussex, PO18 0BE |
| HUGHES, Michael Patrick RESIGNED | Director | 12 Sep 2017 | 31 Dec 2020 | England | June 1965 | ., Stafford Park 5, Telford, Shropshire, TF3 3BL, England |
| HULL, Victoria Mary RESIGNED | Director | 01 Jan 2006 | 31 Mar 2014 | United Kingdom | March 1962 | 3rd Floor, 40, Grosvenor Place, London, SW1X 7AW |
| KHALAF, Randy RESIGNED | Director | 31 Oct 2022 | 25 Jun 2025 | United States | September 1967 | Faraday Close, Worthing, West Sussex, BN13 3PL, United Kingdom |
| KINGSLEY, Nigel RESIGNED | Director | | 30 Sep 1992 | | October 1946 | 1 Wensleydale Gardens, Hampton, Middlesex, TW12 2LU |
| LAMBETH, Trevor RESIGNED | Director | 31 Mar 2014 | 31 Mar 2022 | England | November 1963 | ., Stafford Park 5, Telford, Shropshire, TF3 3BL, England |
| LATTIMER, Clive Alan RESIGNED | Director | | 07 Dec 1992 | England | January 1948 | 4 College Avenue, Maidenhead, Berkshire, SL6 6AJ |
| LENDRUM, Vincent RESIGNED | Director | 01 Apr 2002 | 22 Feb 2007 | | September 1965 | 64 Castle Cicuit, Seaforth, New South Wales, 2092, Australia |
| LEONARD, Jack Lawrence, Dr RESIGNED | Director | | 07 Aug 1996 | | November 1931 | Downs Edge Stable Lane, Findon, Worthing, West Sussex, BN14 0RR |
| MCNAUGHTON, Hamish Michael, Dr RESIGNED | Director | 02 Sep 1996 | 30 Mar 2001 | | April 1949 | 9 Wandleys Drive, Eastergate, Chichester, West Sussex, PO20 6SF |
| MILLS, Ashley RESIGNED | Director | | 30 Jun 1999 | | February 1954 | Millstone House, Abbotswood, Guildford, Surrey, GU1 1UX |
| PHILLIPS, Martin Edward RESIGNED | Director | 10 Feb 1997 | 31 Mar 2002 | England | February 1946 | Old Erringham Cottage, Steyning Road, Shoreham, West Sussex, BN43 5FD |
| RANDERY, Tanuja RESIGNED | Director | 01 Mar 2015 | 13 Sep 2017 | England | September 1966 | ., Stafford Park 5, Telford, Shropshire, TF3 3BL, England |
| RIDLEY, Allan Thomas RESIGNED | Director | | 26 Aug 1998 | United Kingdom | March 1946 | Rock Cottage, 18 Coastal Road, East Preston, Littlehampton, West Sussex, BN16 1SJ |
| SAGE, Antoine Marie RESIGNED | Director | 15 Feb 2022 | 31 Oct 2022 | England | September 1982 | Schneider Electric, 80 Victoria Street, London, SW1E 5JL, England |
| SMITH, Brian David Vincent, Dr RESIGNED | Director | | 02 Jun 1993 | United Kingdom | July 1953 | 23 George V Avenue, Worthing, West Sussex, BN11 5SE |
| SMITH, Kevin Charles RESIGNED | Director | 31 Jan 2009 | 31 Jul 2015 | United Kingdom | August 1959 | 2nd Floor, 80, Victoria Street, London, SW1E 5JL, England |
| SPENCER, Rachel Louise RESIGNED | Director | 22 Jan 2010 | 31 Dec 2014 | United Kingdom | February 1966 | 3rd Floor, 40, Grosvenor Place, London, SW1X 7AW |
| THOMAS, David Jeremy RESIGNED | Director | 22 Jan 2010 | 31 Mar 2014 | United Kingdom | May 1954 | 3rd Floor, 40, Grosvenor Place, London, SW1X 7AW |
| THOMAS, David Jeremy RESIGNED | Director | 01 Apr 2003 | 02 Mar 2009 | United Kingdom | May 1954 | 11 Coutts Crescent, 13-23 St Albans Road, London, NW5 1RF |
| THOROGOOD, Stuart RESIGNED | Director | 31 Mar 2014 | 01 Mar 2015 | England | January 1958 | 2nd Floor, 80, Victoria Street, London, SW1E 5JL, England |
| TOMKINS, Peter John RESIGNED | Director | 01 Aug 1992 | 31 Mar 2007 | | March 1947 | Beech Tree Corner, Georges Lane, Storrington, West Sussex, RH20 3JH |
| TOWNSEND, John Michael RESIGNED | Director | | 14 Jun 2010 | United Kingdom | November 1940 | 7 The Furlongs, Steyning, West Sussex, BN44 3PE |
| VLIEGHE, Nicolas RESIGNED | Director | 31 Mar 2014 | 06 Sep 2019 | France | July 1958 | ., Stafford Park 5, Telford, Shropshire, TF3 3BL, England |
| WADE, Peter Aidan, Doctor RESIGNED | Director | 06 Oct 1992 | 05 Oct 2000 | | January 1943 | Sundial House The Alley, Church Street Amberley, Arundel, West Sussex, BN18 9NG |
| WEXLER, Peter Irwin RESIGNED | Director | 31 Mar 2014 | 17 Dec 2018 | United States | December 1967 | ., Stafford Park 5, Telford, Shropshire, TF3 3BL, England |