| SHANKEY, Rosemary Eva ACTIVE | Secretary | 27 Jun 2025 | | | | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| ACTON, Tabitha ACTIVE | Director | 05 Dec 2024 | | England | July 1991 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| ANGELL, Joseph William ACTIVE | Director | 02 Sep 2021 | | Wales | May 1984 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| BAIRD, Gareth Thomas Gilroy ACTIVE | Director | 04 Sep 2014 | | United Kingdom | May 1957 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| BROWN, Scott Alexander ACTIVE | Director | 08 Sep 2022 | | Scotland | June 1969 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| CAMERON, Ewan Robert, Professor ACTIVE | Director | 07 Sep 2023 | | Scotland | March 1961 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| DUN, Kathryn Anne ACTIVE | Director | 03 Sep 2026 | | Scotland | May 1969 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| GRAY, William Gerald ACTIVE | Director | 07 Sep 2023 | | Scotland | September 1959 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| JEFFRIES, Peter John, Doctor ACTIVE | Director | 04 Sep 2025 | | Scotland | September 1956 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| KYLE, William Oswald ACTIVE | Director | 05 Dec 2024 | | Scotland | September 1963 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| LOGAN, Anne ACTIVE | Director | 05 Mar 2020 | | Scotland | June 1954 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| MURPHY, Alan Mark ACTIVE | Director | 08 Dec 2022 | | England | September 1967 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| ROWELL, Katherine Ann ACTIVE | Director | 04 Dec 2025 | | Scotland | June 1972 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| SCOTT, William John Graham ACTIVE | Director | 08 Sep 2022 | | United Kingdom | June 1951 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| SCOTT AITON, Peter Robert ACTIVE | Director | 01 Jan 2021 | | United Kingdom | February 1985 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| TWEED, Campbell Wilson ACTIVE | Director | 12 Jun 2025 | | Northern Ireland | April 1955 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| YEOMANS, John ACTIVE | Director | 02 Sep 2021 | | United Kingdom | June 1962 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| BURNETT, Colin Neil RESIGNED | Secretary | 13 Dec 2000 | 27 Jun 2025 | | | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| MACKENZIE, Murdo John RESIGNED | Secretary | 29 Jun 1995 | 13 Dec 2000 | | | 110 Braid Road, Edinburgh, Midlothian, EH10 6AT |
| ADAM, Kay Jean Anne RESIGNED | Director | 06 Dec 2018 | 08 Sep 2022 | Scotland | March 1969 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| ARMOUR, James RESIGNED | Director | 05 Nov 1998 | 09 Sep 2004 | | September 1929 | Mokoia 11 Crosbie Road, Troon, Ayrshire, KA10 6HE |
| BEBBINGTON, Timothy John RESIGNED | Director | 08 Sep 2005 | 08 Sep 2011 | England | March 1965 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| BIGGAR, Donald James RESIGNED | Director | 28 Sep 1994 | 27 Feb 2005 | Scotland | July 1952 | Chapelton, Castle Douglas, Dumfries And Galloway, DG7 3ET |
| BIGGAR, Walter Andrew RESIGNED | Director | 30 Jun 1994 | 20 Aug 1998 | | March 1915 | Magdalene Hall, St. Boswells, Roxburghshire, TD6 0EB |
| BODEN, Lisa Anne, Professor RESIGNED | Director | 08 Dec 2016 | 15 Jun 2023 | Scotland | October 1972 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| BRAMLEY, Paul Scotson, Dr RESIGNED | Director | 27 Sep 2001 | 10 Sep 2009 | England | May 1940 | Dene House, Little Salkeld, Penrith, Cumbria, CA10 1NN |
| BROOKE, Alexander Keith RESIGNED | Director | 28 Sep 1994 | 05 Nov 1996 | Scotland | February 1946 | Carscreugh, Glenluce, Newton Stewart, DG8 0NU |
| CAMPBELL, John Park RESIGNED | Director | 05 Sep 2013 | 31 Mar 2020 | Scotland | April 1934 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| CAMPBELL, Joseph RESIGNED | Director | 30 Jun 1994 | 05 Sep 2002 | | June 1935 | "Cloonanne", 54 Derry Road, Strabane, County Tyrone, BT82 8LD |
| CHARNLEY, Judith Gwendolene RESIGNED | Director | 05 Dec 2002 | 07 Sep 2006 | | November 1955 | Ing Heys Farm, Laneshawbridge, Colne, Lancashire, BB8 8NJ |
| COLSTON, Matthew William RESIGNED | Director | 07 Sep 2006 | 03 Sep 2015 | England | September 1963 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| DOHERTY, Simon, Dr RESIGNED | Director | 07 Sep 2023 | 17 Dec 2024 | Northern Ireland | May 1975 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| DUNCAN MILLAR, Ian RESIGNED | Director | 14 Jun 2012 | 31 Dec 2020 | Scotland | June 1951 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| ELLIOT, Walter RESIGNED | Director | 30 Jun 1994 | 09 Sep 2004 | | April 1919 | Murrayfield View, 28/74 Roseburn Place, Edinburgh, EH12 5NX |
| ELLIOTT, Thomas RESIGNED | Director | 30 Jun 1994 | 29 May 1998 | | April 1926 | Newhall, Clovenfords, Galashiels, TD1 1TL |
| FELL, Fiona Catherine RESIGNED | Director | 05 Nov 1996 | 05 Dec 2002 | United Kingdom | September 1962 | West Fleetham, Chathill, Northumberland, NE67 5JT |
| GAMMELL, Philippa Mary RESIGNED | Director | 05 Sep 2002 | 14 Jun 2012 | United Kingdom | May 1952 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| GILMOUR, John, Sir RESIGNED | Director | 30 Jun 1994 | 09 Feb 2013 | Scotland | July 1944 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| GUTHRIE, Hugh RESIGNED | Director | 05 Aug 1999 | 04 Sep 2008 | | August 1934 | Mosspark, Kirklandside, Kilmarnock, Ayrshire, KA1 5LH, Scotland |
| GUTHRIE, Mungo RESIGNED | Director | 05 Sep 2013 | 08 Sep 2022 | Scotland | May 1961 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| HAGAN, Dennis Hamill RESIGNED | Director | 27 Jan 1999 | 28 Sep 2000 | | August 1934 | The Shieling 41 Mount Pleasant, Hertford Heath, Hertford, Hertfordshire, SG13 7QZ |
| HALL, Rachel Louise RESIGNED | Director | 05 Dec 2024 | 04 Dec 2025 | United Kingdom | June 1996 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| HAMILTON, Loudon Pearson RESIGNED | Director | 05 Nov 1998 | 09 Sep 2004 | | January 1932 | Old Lyne Station, Peebles, Scottish Borders, EH45 8NP |
| HELM, James Sommerville RESIGNED | Director | 14 Dec 1994 | 05 Aug 1999 | | February 1937 | Haltree, Heriot, Midlothian, EH38 5YD |
| IZAT, Alexander John Rennie RESIGNED | Director | 30 Jun 1994 | 05 Sep 2002 | England | July 1932 | High, Cocklaw, Berwick-Upon-Tweed, TD15 1UZ |
| JEFFREY, John RESIGNED | Director | 05 Nov 1996 | 08 Dec 2011 | United Kingdom | March 1959 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| JONES, Gareth Pierce RESIGNED | Director | 09 Sep 2010 | 02 Sep 2021 | United Kingdom | May 1960 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| LANGRISH, Frank Richard RESIGNED | Director | 05 Sep 2013 | 08 Sep 2022 | England | December 1952 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| LAWRIE, Susan Elizabeth RESIGNED | Director | 08 Dec 2022 | 07 Sep 2023 | Scotland | August 1958 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| LENNOX, Robert John RESIGNED | Director | 30 Jun 1994 | 08 Sep 2005 | United Kingdom | May 1925 | Shemore, Luss, Alexandria, G83 8RH |
| LEWIS, Christopher James RESIGNED | Director | 24 May 2001 | 09 Sep 2010 | England | July 1938 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| LINKLATER, Karl Alexander, Professor RESIGNED | Director | 30 Jun 1994 | 10 Dec 2009 | | September 1939 | Bridge Park, Old Bridge Road, Selkirk, Selkirkshire, TD7 4LG |
| LOWRIE, Colin RESIGNED | Director | 04 Dec 2008 | 06 Sep 2018 | Scotland | February 1960 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| MACKINNON, John Duncan, Dr RESIGNED | Director | 08 Sep 2016 | 04 Sep 2025 | England | May 1948 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| MASON, Keith David RESIGNED | Director | 05 Sep 2013 | 26 Nov 2019 | Scotland | September 1945 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| MATTS, John Wager RESIGNED | Director | 30 Jun 1994 | 04 Sep 2014 | England | November 1955 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| MCKEEVER, Declan James, Professor RESIGNED | Director | 07 Sep 2007 | 05 Sep 2008 | | May 1957 | 27 Bulls Lane, North Mymms, Hatfield, Hertfordshire, AL9 7NY |
| MCLAREN, Henry Bell RESIGNED | Director | 30 Jun 1994 | 05 Nov 1996 | United Kingdom | July 1939 | Chantry Cottage, East Parks, Bran Cepeth, Durham, DH7 8EG |
| NOLAN, Andrea Mary, Professor RESIGNED | Director | 05 Sep 2013 | 08 Sep 2022 | Scotland | May 1958 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| PHILP, Neil RESIGNED | Director | 27 Sep 2001 | 05 Dec 2002 | | October 1959 | Yew Tree Cottage, Worcester Road, Upton Snodsbury, Worcestershire, WR7 4NW |
| RICHARDS, Katherine Anne, Dr RESIGNED | Director | 06 Dec 2012 | 08 Sep 2022 | England | October 1962 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| RICHARDS, Randolph Harvey, Professor RESIGNED | Director | 04 Sep 2014 | 07 Sep 2023 | Scotland | March 1948 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| ROBB, Andrew RESIGNED | Director | 10 Dec 2009 | 08 Sep 2016 | Scotland | February 1948 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| ROSS, John Alexander RESIGNED | Director | 05 Sep 2002 | 06 Dec 2012 | Scotland | February 1945 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| RUSSELL, Alastair Muir, Sir RESIGNED | Director | 03 Sep 2020 | 03 Sep 2026 | Scotland | January 1949 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| SANDERSON, Frances Elizabeth, Lady RESIGNED | Director | 30 Jun 1994 | 28 Sep 2000 | Scotland | May 1938 | Beckettsfield, Bowden, Melrose, Roxburghshire, TD6 0ST |
| STEWART, William Black RESIGNED | Director | 04 Sep 2014 | 02 Sep 2021 | United Kingdom | April 1951 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| STOBO, James RESIGNED | Director | 30 Jun 1994 | 28 Sep 2000 | Gb-Sct | December 1934 | Knapdene House, Nabdean, Berwick Upon Tweed, TD15 1SZ |
| STUBBINGS, Lesley Ann RESIGNED | Director | 29 Jun 1995 | 08 Sep 2005 | | April 1958 | Saddletrees 3 Fullers Close, Aldwincle, Kettering, Northamptonshire, NN14 3UU, England |
| SWANSON, Alistair Clyne RESIGNED | Director | 08 Sep 2005 | 04 Sep 2014 | Scotland | April 1947 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| TAYLOR, Bridget Claire RESIGNED | Director | 03 Dec 2015 | 05 Sep 2024 | United Kingdom | June 1961 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| TREES, Alexander John, Professor RESIGNED | Director | 08 Dec 2011 | 03 Sep 2020 | Scotland | June 1946 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| TUDOR, Thomas Richard RESIGNED | Director | 28 Sep 1994 | 24 May 2001 | Wales | November 1943 | Llysun, Llanerfyl, Welshpool, Powys, SY21 0EL |
| TULLOCH, William Alexander RESIGNED | Director | 02 Sep 2021 | 05 Dec 2024 | Scotland | March 1952 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| WEIR, Robert Matthew RESIGNED | Director | 09 Sep 2004 | 05 Sep 2013 | Scotland | December 1961 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| WELLS, Peter William, Professor RESIGNED | Director | 30 Jun 1994 | 08 Sep 2016 | Scotland | February 1946 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| WELSH, Louise RESIGNED | Director | 08 Dec 2016 | 03 Apr 2024 | United Kingdom | November 1960 | Pentlands Science Park, Bush Loan, Penicuik, EH26 0PZ |
| TM COMPANY SERVICES LIMITED RESIGNED | Nominee Director | 30 Jun 1994 | 29 Jun 1995 | | | Edinburgh Quay, 133 Fountainbridge, Edinburgh, Midlothian, EH3 9AG |