| BOUSTEAD, Paul Michael ACTIVE | Director | 15 Jun 2023 | | England | July 1979 | Tc Alexander Sloan Limited, 7th Floor, 180 St Vincent Street, Glasgow, Lanarkshire, G2 5SG, Scotland |
| BRIGHT, Andrew ACTIVE | Director | 15 Jun 2023 | | England | March 1966 | Tc Alexander Sloan Limited, 7th Floor, 180 St Vincent Street, Glasgow, Lanarkshire, G2 5SG, Scotland |
| CAINE, Stewart John Benson ACTIVE | Director | 28 Sep 2023 | | Scotland | June 1962 | Tc Alexander Sloan Limited, 7th Floor, 180 St Vincent Street, Glasgow, Lanarkshire, G2 5SG, Scotland |
| CLEMMEY, Richard Henry ACTIVE | Director | 20 Jun 2022 | | England | August 1972 | Tc Alexander Sloan Limited, 7th Floor, 180 St Vincent Street, Glasgow, Lanarkshire, G2 5SG, Scotland |
| LOWE, Michael Andrew ACTIVE | Director | 26 Feb 2018 | | England | May 1963 | Tc Alexander Sloan Limited, 7th Floor, 180 St Vincent Street, Glasgow, Lanarkshire, G2 5SG, Scotland |
| PARKE, Colin Ronald ACTIVE | Director | 02 May 2024 | | England | April 1972 | Tc Alexander Sloan Limited, 7th Floor, 180 St Vincent Street, Glasgow, Lanarkshire, G2 5SG, Scotland |
| WILKINSON, Adrian Paul ACTIVE | Director | 30 Sep 2026 | | England | January 1971 | Tc Alexander Sloan Limited, 7th Floor, 180 St Vincent Street, Glasgow, Lanarkshire, G2 5SG, Scotland |
| DURWARD, Robert Wilson Menzies RESIGNED | Secretary | 11 Oct 2000 | 04 Jan 2018 | | | Cloburn Quarry, Pettinain, Lanark, Lanarkshire, ML11 8SR |
| BRIAN REID LTD. RESIGNED | Nominee Secretary | 21 Jun 2000 | 21 Jun 2000 | | | 5 Logie Mill Beaverbank Office Park, Logie Green Road, Edinburgh, EH7 4HH |
| ALLISON, John Paul Pulford RESIGNED | Director | 21 Feb 2002 | 01 Apr 2020 | England | November 1965 | Cloburn Quarry, Pettinain, Lanark, Lanarkshire, ML11 8SR |
| ALSTON, Murray Mitchell RESIGNED | Director | 18 Nov 2003 | 01 Jul 2011 | United Kingdom | July 1957 | 2 Green Meadows, Hom Green, Ross On Wye, Herefordshire, HR9 7RE |
| COLE, Steven Robert George RESIGNED | Director | 01 Apr 2004 | 21 Feb 2017 | England | June 1950 | Cloburn Quarry, Pettinain, Lanark, Lanarkshire, ML11 8SR |
| CULLIMORE, Roger Neville RESIGNED | Director | 21 Feb 2002 | 01 Apr 2020 | England | July 1938 | Cloburn Quarry, Pettinain, Lanark, Lanarkshire, ML11 8SR |
| DURWARD, Robert Wilson Menzies RESIGNED | Director | 11 Oct 2000 | 04 Jan 2018 | Scotland | May 1951 | Cloburn Quarry, Pettinain, Lanark, Lanarkshire, ML11 8SR |
| GLENN, David John RESIGNED | Director | 18 Jun 2012 | 19 Jun 2017 | England | June 1955 | Cloburn Quarry, Pettinain, Lanark, Lanarkshire, ML11 8SR |
| GORDON, Robert RESIGNED | Director | 30 May 2007 | 19 Jun 2017 | Scotland | May 1960 | Cloburn Quarry, Pettinain, Lanark, Lanarkshire, ML11 8SR |
| KELL, Richard RESIGNED | Director | 10 Oct 2005 | 18 May 2007 | | August 1937 | Heythwood, Regent Road, Hoby, Melton Mowbray, Leicestershire, LE14 3DU |
| LEMON, Peter Richard RESIGNED | Director | 21 Feb 2002 | 20 Jun 2022 | United Kingdom | May 1963 | Cloburn Quarry, Pettinain, Lanark, Lanarkshire, ML11 8SR |
| LOWE, Michael Andrew RESIGNED | Director | 18 Nov 2003 | 10 Oct 2005 | United Kingdom | May 1963 | 4 Ramsay Close, Wellington Park, Camberley, Surrey, GU15 1JS |
| MACKENZIE, Alan Kenneth RESIGNED | Director | 26 Feb 2018 | 02 May 2024 | Scotland | April 1961 | Cloburn Quarry, Pettinain, Lanark, Lanarkshire, ML11 8SR |
| MCMANUS, Paul Francis RESIGNED | Director | 17 Nov 2017 | 02 Feb 2026 | Scotland | January 1967 | Cloburn Quarry, Pettinain, Lanark, Lanarkshire, ML11 8SR |
| MCMANUS, Paul Francis RESIGNED | Director | 03 Jul 2001 | 21 Feb 2002 | Scotland | January 1967 | Hartree Grange, By Biggar, Biggar, South Lanarkshire, ML12 6NS |
| PRIOR, Peter Herbert RESIGNED | Director | 06 Jul 2002 | 18 Jun 2019 | England | November 1943 | Cloburn Quarry, Pettinain, Lanark, Lanarkshire, ML11 8SR |
| SETCHELL, Peter Alan RESIGNED | Director | 21 Feb 2002 | 10 Oct 2005 | United Kingdom | May 1958 | 10 Hillcrest Road, Barnstaple, Devon, EX32 9EP |
| THACKER, Philip William RESIGNED | Director | 21 Feb 2002 | 01 Feb 2018 | Scotland | September 1947 | Cloburn Quarry, Pettinain, Lanark, Lanarkshire, ML11 8SR |
| WILSON, Barry James RESIGNED | Director | 26 Jun 2017 | 20 Jun 2022 | England | January 1966 | Cloburn Quarry, Pettinain, Lanark, Lanarkshire, ML11 8SR |
| BRIAN REID LTD. RESIGNED | Nominee Director | 21 Jun 2000 | 21 Jun 2000 | | | 5 Logie Mill Beaverbank Office Park, Logie Green Road, Edinburgh, EH7 4HH |
| STEPHEN MABBOTT LTD. RESIGNED | Nominee Director | 21 Jun 2000 | 21 Jun 2000 | | | 14 Mitchell Lane, Glasgow, G1 3NU |