| KOSTENSE-WINTERTON, Sarah Jane Alison ACTIVE | Secretary | 01 May 2015 | | | | Nova North, Kw Communications, C/O The Argyll Club, 11 Bressenden Place, London, SW1E 5BY, England |
| HARGREAVES, Neil James ACTIVE | Director | 14 Feb 2019 | | England | October 1976 | Knauf Insulation Ltd., PO BOX 10, Stafford Road, St. Helens, WA10 3NS, England |
| TOLSON, John Kevin ACTIVE | Director | 25 Nov 2025 | | England | March 1968 | 43, Nether Royd View, Silkstone Common, Barnsley, South Yorkshire, S75 4QQ, England |
| WILSON, Nicholas John ACTIVE | Director | 27 Mar 2023 | | England | November 1979 | Rockwool Site, Pencoed, Bridgend, Bridgend County Borough, CF35 6NY, Wales |
| DUNN-MEYNELL, Crispin Hugo RESIGNED | Secretary | 01 Aug 2003 | 30 Apr 2015 | | | 57c Albany Street, London, NW1 4BT |
| KNIGHT, Ian Sinclair RESIGNED | Secretary | | 31 Jul 2003 | | | Archway Lodge Stable Yard, Mentmore, Leighton Buzzard, Bedfordshire, LU7 0QG |
| ANDREWS, Mark Glen RESIGNED | Director | 22 Dec 2004 | 27 Jan 2010 | United Kingdom | July 1969 | 1 Manor Court, Breedon On The Hill, Derbyshire, DE73 8FW |
| BLACKBURN, Roland RESIGNED | Director | 13 Apr 1999 | 31 Jan 2001 | | March 1946 | Rose Cottage, Hill Lane, Broxton, Chester, CH3 9HT |
| BOLD, Adrian John Kieran RESIGNED | Director | 19 Jun 2002 | 20 Jan 2004 | | March 1948 | Belmont House, Upper Race, Pontypool, Torfaen, NP4 5UZ |
| BURNELL, Philip John RESIGNED | Director | | 10 Dec 1993 | | June 1945 | 37 Manchester Road, Knutsford, Cheshire, WA16 0LY |
| CHALDECOTT, Michael Strickland RESIGNED | Director | 09 Dec 1997 | 20 Jan 2004 | | October 1960 | 2 Ridley Hill Farm, Ridley, Tarporley, Cheshire, CW6 9RX |
| FAIRLEY, Donald Grant RESIGNED | Director | | 02 Jan 1998 | | August 1942 | 10 Gainsborough Close, Camberley, Surrey, GU15 3UE |
| HAAR, Preben RESIGNED | Director | | 31 Dec 1992 | | June 1938 | Evertvej 24, 4040 Jyllinge, Denmark |
| HAVARD, Alan David, Dr RESIGNED | Director | | 17 Aug 1993 | England | May 1940 | 78 Trafalgar Road, Southport, Merseyside, PR8 2NJ |
| HELDGAARD, Thomas RESIGNED | Director | 20 Jun 2011 | 07 Feb 2014 | United Kingdom | July 1969 | Flat 501, Roland House, 2 Roland Court, London, Gt. London, SW7 3RU, United Kingdom |
| HOLTON, Keven Roy RESIGNED | Director | 02 Dec 1993 | 14 Apr 1997 | England | October 1954 | 1 Ridge Park, Bramhall, Stockport, Cheshire, SK7 2BJ |
| HOWE, John Wilfred RESIGNED | Director | | 06 Oct 1994 | | April 1936 | 11 Tyn Y Bettws Close, Bettws, Bridgend, Mid Glamorgan, CF32 8YF |
| JEFFERIES, John RESIGNED | Director | 13 Apr 1999 | 19 Jun 2002 | Great Britain | October 1962 | 6 Heatherleigh, Caldy, Wirral, Merseyside, CH48 1QZ |
| KARCHER, Richard Whitmore RESIGNED | Director | 02 Jan 1998 | 11 Jan 1999 | | May 1953 | Avenue Du Mandir 99, Waterloo 1410, Brussels Belgium, FOREIGN |
| KNOOP, Yoram RESIGNED | Director | 15 Mar 2001 | 01 Jan 2003 | | August 1969 | Graaf Withmanlaan 54, Bussum, 1405 Hc, Holland |
| KREFTING, Johan Henrik RESIGNED | Director | 11 Mar 1993 | 10 Mar 1997 | | October 1939 | Flat 4, Cathedral Court Cathedral Green, Llandaff, Cardiff, CF5 2EB |
| LEONARD, David Charles RESIGNED | Director | 11 Mar 1994 | 24 Jan 1997 | | June 1938 | 12 James Street, Lincoln, Lincolnshire, LN2 1QE |
| MATTHEWS, Darryl Christopher RESIGNED | Director | 01 Jul 2018 | 17 Apr 2023 | England | February 1974 | Rockwool Uk Limited, Chiswick Tower, 389 Chiswick High Road, London, W4 4AL, England |
| MCDONNELL, Eamon RESIGNED | Director | 04 Mar 2010 | 07 Feb 2014 | United Kingdom | April 1966 | Isover - St. Gobain, Whitehouse Industrial Estate, Runcorn, Cheshire, WA7 3DP, United Kingdom |
| MCKERRACHER, Iain Douglas RESIGNED | Director | 27 Sep 1996 | 20 Dec 2005 | United Kingdom | September 1950 | 13a Kent Road, Harrogate, North Yorkshire, HG1 2LE |
| MCLEAN, Theresa Mary RESIGNED | Director | 26 Jun 2023 | 24 Nov 2025 | Scotland | August 1977 | Superglass Insulation Ltd, Thistle Industrial Estate, Kerse Road, Stirling, FK7 7QQ, Scotland |
| MCLEOD, Alexander John RESIGNED | Director | 04 Mar 2010 | 08 Apr 2013 | England | April 1965 | Superglass, Thistle Industrial Estate, Kerse Road, Stirling, Stirlingshire, FK7 7QQ |
| MCLEOD, Alexander John RESIGNED | Director | 22 Dec 2004 | 31 Oct 2007 | England | April 1965 | 2 Valley Lane, Long Bennington, Newark, Nottinghamshire, NG23 5FR |
| MEEK, Brian William RESIGNED | Director | 10 Mar 1997 | 27 Sep 1999 | | January 1940 | Mill House New Mill Corner, Miskin, Pontyclun, Mid Glamorgan, CF72 8PD |
| MOSS, Rory Louis RESIGNED | Director | 26 Sep 2014 | 01 Jul 2018 | England | August 1967 | Rockwool Ltd, 26-28 Hammersmith Grove, London, W6 7HA, England |
| MUNRO, Ken George RESIGNED | Director | 02 Apr 2015 | 26 Jun 2023 | Scotland | April 1969 | Superglass Insulation Ltd, Thistle Industrial Estate, Kerse Road, Stirling, FK7 7QQ, Scotland |
| O'BRIEN, Peter Thomond RESIGNED | Director | 14 Apr 1997 | 30 Oct 1998 | England | March 1961 | 16 St Johns Road, Knutsford, Cheshire, WA16 0DP |
| ROBERTS, Brian Vivian RESIGNED | Director | 07 Feb 2000 | 20 Aug 2007 | Wales | August 1951 | 5 Tyddyn Gwaun, Laleston, Bridgend, Bridgend County Borough, CF32 0LN |
| ROBSON, Michael Anthony RESIGNED | Director | 19 Jun 2002 | 22 Dec 2004 | England | November 1954 | Littlemead Knockholt Road, Halstead, Sevenoaks, Kent, TN14 7EU |
| SCHREUDER, Johan Marcel RESIGNED | Director | 04 Mar 2010 | 20 Jun 2011 | United Kingdom | September 1963 | 26-28, Hammersmith Grove, London, W6 7HA, United Kingdom |
| SINFIELD, John Haydn RESIGNED | Director | 04 Mar 2010 | 14 Feb 2019 | England | December 1965 | Isover, Stafford Road, St. Helens, Merseyside, WA10 3NS, United Kingdom |
| SMELLIE, John RESIGNED | Director | 20 Dec 2005 | 17 Jan 2010 | Scotland | March 1949 | 3 Millbrae, Gargunnock, Stirling, FK8 3BB |
| TRAVILL, David Alfred RESIGNED | Director | 07 Feb 2014 | 07 Mar 2019 | Great Britian | April 1965 | 3, Twyford Gardens, Grantham, Lincolnshire, NG31 9BY, England |
| VINCE, Nicholas Andrew RESIGNED | Director | 02 Dec 1994 | 01 Feb 2000 | | January 1955 | The Old Farm House, Llandow, Cowbridge, South Glamorgan, CF71 7PX |
| WITHERS, Paul Nigel, Dr RESIGNED | Director | 02 Dec 1994 | 09 Dec 1997 | United Kingdom | June 1956 | Old Whitehill Barn, Old Whitehill, Tackley, Kidlington, Oxfordshire, OX5 3AB |