| CLARKE, Jody ACTIVE | Director | 19 Jul 2019 | | England | October 1982 | Headlands Lane, Knottingley, West Yorkshire, WF11 0HP |
| METHVEN, Gregor Sandy ACTIVE | Director | 19 Sep 2022 | | England | October 1969 | Headlands Lane, Knottingley, West Yorkshire, WF11 0HP |
| SANTON, Stuart Mark ACTIVE | Director | 01 Jul 2021 | | England | December 1965 | Headlands Lane, Knottingley, West Yorkshire, WF11 0HP |
| BUTTERLY, Brian Joseph RESIGNED | Secretary | 18 May 1999 | 18 Feb 2013 | | | 13 Cowper Drive, Rathmines, Dublin 6, Ireland |
| SARAI, Mandeep RESIGNED | Secretary | 19 Aug 2019 | 09 Aug 2024 | | | Headlands Lane, Knottingley, West Yorkshire, WF11 0HP |
| SWINDELL, Keith Jeffrey RESIGNED | Secretary | 21 Feb 2013 | 19 Jul 2019 | | | Headlands Lane, Knottingley, West Yorkshire, WF11 0HP, England |
| INVENSYS SECRETARIES LIMITED RESIGNED | Secretary | | 27 Apr 1998 | | | Invensys House, Carlisle Place, London, SW1P 1BX |
| ROCKWARE GROUP LIMITED RESIGNED | Secretary | 27 Apr 1998 | 18 May 1999 | | | Porters Wood, St Albans, Hertfordshire, AL3 6NY |
| BAEHREN, James William RESIGNED | Director | 02 Jul 1998 | 31 Mar 1999 | | June 1950 | 7812 Therfield Dr, Sylvania Oh 43560, Ohio Usa, FOREIGN |
| BONNÉ, Henrik RESIGNED | Director | 02 Dec 2021 | 24 Jun 2024 | Denmark | March 1970 | Headlands Lane, Knottingley, West Yorkshire, WF11 0HP |
| BROWN, Robert Casson RESIGNED | Director | 07 Jun 1993 | 31 Dec 1997 | | March 1939 | 38 Newlands Avenue, Melton Park, Newcastle Upon Tyne, NE3 5PX |
| BUTTERLY, Brian Joseph RESIGNED | Director | 08 Sep 2008 | 18 Feb 2013 | Ireland | March 1945 | 13 Cowper Drive, Rathmines, Dublin 6, Ireland |
| COULSON, Paul Richard RESIGNED | Director | 31 Mar 1999 | 05 Mar 2001 | | April 1952 | Balholm, 4 Shrewsbury Road, Dublin 4, Ireland |
| CURRIE, David RESIGNED | Director | 21 Jul 1999 | 26 Feb 2010 | United Kingdom | August 1945 | Brook Mount 21 Cavendish Avenue, Harrogate, North Yorkshire, HG2 8HY |
| DAVIES, Frank John, Sir RESIGNED | Director | | 30 Sep 1993 | England | September 1931 | Stonewalls Castle Street, Deddington, Banbury, Oxfordshire, OX15 0TE |
| DICK, Michael Morrison RESIGNED | Director | 13 Jan 2014 | 29 May 2026 | Wales | June 1968 | Headlands Lane, Knottingley, West Yorkshire, WF11 0HP, England |
| GOREY, Brendan Kevin RESIGNED | Director | 31 Mar 1999 | 06 Apr 2009 | Ireland | May 1956 | 40 Lakelands Crescent, Stillorgan, County Dublin, Ireland |
| GORTER, Johannes RESIGNED | Director | 11 Nov 2016 | 23 Dec 2019 | Netherlands | October 1959 | Headlands Lane, Knottingley, West Yorkshire, WF11 0HP |
| GRANT, Alexander James RESIGNED | Director | | 07 Jun 1994 | | June 1942 | 2 West Park Grove, Leeds, West Yorkshire, LS8 2HQ |
| GRANT, Alexander James RESIGNED | Director | | 08 Apr 1994 | | June 1942 | 2 West Park Grove, Leeds, West Yorkshire, LS8 2HQ |
| HAMILTON, Brian RESIGNED | Director | | 03 Oct 1997 | | August 1944 | 88 Stoops Lane, West Bessacarr, Doncaster, South Yorkshire, DN4 7QY |
| KILTY, Edward Joshua RESIGNED | Director | 31 Mar 1999 | 30 Apr 2007 | | August 1948 | 39 Carysfort Downes, Blackrock, Co Dublin, IRISH, Ireland |
| LEWIS, Raymond John RESIGNED | Director | | 03 Sep 1993 | | April 1946 | Knoll Farmhouse, The Knoll,Tansley, Matlock, Derbyshire, DE4 5FP |
| MATTHEWS, David John RESIGNED | Director | 31 Mar 2014 | 26 Oct 2021 | England | January 1964 | Headlands Lane, Knottingley, West Yorkshire, WF11 0HP, England |
| MAWBY, Allen RESIGNED | Director | 12 May 1994 | 02 Jul 1998 | | August 1949 | Kerry House Comeytrowe Lane, Taunton, Somerset, TA1 5JB |
| NOLAN, John David RESIGNED | Director | 01 May 1995 | 03 Oct 1997 | | August 1946 | 89 Postern Close, York, YO2 1JF |
| NOLAN, John David RESIGNED | Director | 19 May 1994 | 07 Jun 1994 | | August 1946 | 20 Clifton Green, York, YO3 6LN |
| O'DONOVAN, Kathleen Anne RESIGNED | Director | 25 Aug 1992 | 27 Apr 1998 | United Kingdom | May 1957 | 3c Cintra Park, Upper Norwood, London, SE19 2LH |
| PASSANT, John RESIGNED | Director | 16 Dec 2011 | 30 Jun 2021 | England | May 1952 | Headlands Lane, Knottingley, West Yorkshire, WF11 0HP, England |
| PETERSON, Alan Edward RESIGNED | Director | 12 May 1994 | 28 Apr 1995 | | October 1947 | 153 Cyncoed Road, Cyncoed, Cardiff, CF23 6AG |
| PETERSSON, John Martin RESIGNED | Director | 23 Dec 2019 | 24 Jun 2024 | Sweden | January 1966 | Headlands Lane, Knottingley, West Yorkshire, WF11 0HP |
| REES, Karen RESIGNED | Director | 03 Oct 1997 | 15 Jul 1999 | | December 1963 | 16 Ivy House Court, Auckley, Doncaster, South Yorkshire, DN9 3PX |
| RIORDAN, John Pius RESIGNED | Director | 14 Dec 1999 | 31 Mar 2014 | France | November 1958 | 52, Avenue Victor Hugo, 75116, Paris, France |
| ROBERTSON, Alex RESIGNED | Director | 19 Apr 2000 | 01 Apr 2019 | United States | December 1960 | Headlands Lane, Knottingley, West Yorkshire, WF11 0HP |
| ROTHERHAM, Duncan RESIGNED | Director | | 03 Sep 1993 | | July 1940 | Rookes Cottage Cherry Tree Avenue, Newton On Ouse, York, North Yorkshire, YO6 2BN |
| ROZMUS, Mark RESIGNED | Director | 30 Oct 2008 | 24 Jun 2024 | England | September 1962 | Breck Lodge, Thorpe Road, Mattersey, Doncaster, South Yorkshire, DN10 5ED |
| STEVENS, David John RESIGNED | Director | 31 Dec 1997 | 27 Apr 1998 | | March 1950 | 42 Burghley Road, Wimbledon, London, SW19 5HN |
| SWINDELL, Keith Jeffrey RESIGNED | Director | 16 Jan 2008 | 19 Jul 2019 | England | July 1959 | 48, Rectory Street, Epworth, North Lincolnshire, DN9 1HS, United Kingdom |
| VAN HOOSER, David Gordon RESIGNED | Director | 02 Jul 1998 | 31 Mar 1999 | | October 1946 | 4942 Dauber Drive West, Toledo, Ohio, 43615, Usa |
| VISSERS, Johannes Charles Elisabeth Marie RESIGNED | Director | 13 Jan 2014 | 31 Oct 2020 | Netherlands | March 1960 | Ardagh Glass Dongen B.V., Postbus 60, Eindsestraat 133, 5100 Bc Dongen, Netherlands |
| WALL, Niall James RESIGNED | Director | 30 Apr 2007 | 11 Nov 2016 | England | December 1962 | Part Level 1 (East), 10 Portman Square, London, W1H 6AZ, England |
| WEBB, Joseph Brian RESIGNED | Director | | 03 Sep 1993 | | December 1940 | 38 Sutton Lane, Byram, Knottingley, West Yorkshire, WF11 9DP |
| WILLIAMS, Stanley Killa RESIGNED | Director | 25 Aug 1992 | 08 Jun 1993 | England | July 1945 | White Raven, Park Lane, Ashtead, Surrey, KT21 1EU |
| WORKMAN, David Alan RESIGNED | Director | 31 Mar 1999 | 11 Aug 2000 | United Kingdom | May 1951 | 27 Gatesbridge Park, Finningles, Doncaster, South Yorkshire, DN9 3NZ |
| YOUNG, Eric Edward RESIGNED | Director | 03 Oct 1997 | 04 Jan 2000 | | August 1942 | 2nd Floor Flat, 1 Palace Green, London, W8 4QA |
| YOUNG, Thomas Lee RESIGNED | Director | 02 Jul 1998 | 31 Mar 1999 | | February 1944 | 5315 Rymoor Drive, Sylvania, Ohio 43560, Usa |