| THOMAS, Mark Lindsay ACTIVE | Secretary | 12 Aug 2024 | | | | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| BELL, Carol, Dr ACTIVE | Director | 01 Aug 2022 | | England | October 1958 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| CAFFERY, Lucy Cornelia ACTIVE | Director | 18 May 2026 | | United Kingdom | July 1976 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| CHANG, Andrew Courtney ACTIVE | Director | 01 Aug 2022 | | England | February 1963 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| HOLT, Penelope Jane ACTIVE | Director | 26 Sep 2018 | | United Kingdom | February 1972 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| JAMIESON, Lindsay Helen ACTIVE | Director | 04 Sep 2023 | | England | May 1987 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| JARVIS, Stephen Andrew, Professor ACTIVE | Director | 16 Oct 2025 | | United Kingdom | July 1970 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| MCARTHUR, Stephen Dominick James, Professor ACTIVE | Director | 16 Oct 2025 | | United Kingdom | May 1971 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| QUINN, Catherine Ward ACTIVE | Director | 12 Nov 2020 | | England | September 1958 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| REID, Graeme, Professor ACTIVE | Director | 01 Jan 2021 | | United Kingdom | July 1955 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| SCHMOLKE, Catriona Mary Robertson ACTIVE | Director | 01 Aug 2022 | | Scotland | March 1964 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| SORRELL, Robert Michael, Dr ACTIVE | Director | 01 Jul 2022 | | England | October 1959 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| THOMPSON, Peter Anthony, Dr ACTIVE | Director | 03 Sep 2015 | | United Kingdom | July 1967 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| ANSON, Nicola RESIGNED | Secretary | 01 Jan 2013 | 06 Apr 2018 | | | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, England |
| ARMSTRONG, Andrew John RESIGNED | Secretary | 12 Apr 2018 | 31 Aug 2019 | | | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| BOLSTER, John Roger RESIGNED | Secretary | 09 Jun 2000 | 31 Jan 2001 | | | 57 Kenton Avenue, Sunbury On Thames, Middlesex, TW16 5AR |
| HUNTER, Rebecca Cordelia RESIGNED | Secretary | 13 Feb 2020 | 04 Jun 2024 | | | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| MANN, Alan Raymond RESIGNED | Secretary | 31 Jan 2001 | 01 Jan 2013 | | | Mariemont, 12 Ladyegate Road, Dorking, Surrey, RH5 4AR |
| MANN, Alan Raymond RESIGNED | Secretary | 18 Jan 1995 | 09 Jun 2000 | | | Mariemont, 12 Ladyegate Road, Dorking, Surrey, RH5 4AR |
| PRICE, Deborah RESIGNED | Nominee Secretary | 10 Jun 1994 | 29 Sep 1994 | | | 57 Park Prospect, Graigwen, Pontypridd, Mid Glamorgan, CF37 2HF |
| TODD, Francesca Anne RESIGNED | Secretary | 27 Jul 2005 | 31 May 2006 | | | 26 Glebe Road, Cheam, Surrey, SM2 7NT |
| SERCO CORPORATE SERVICES LIMITED RESIGNED | Secretary | 14 Sep 2007 | 01 Jan 2015 | | | Serco House, 16 Bartley Wood Business Park, Bartley Way, Hook, Hampshire, RG27 9UY |
| ANSON, Nicola RESIGNED | Director | 01 Jan 2013 | 06 Apr 2018 | England | February 1960 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, England |
| ARCHER-JONES, Keith Edward RESIGNED | Director | 31 Jul 2007 | 27 Jan 2010 | | June 1954 | Turnpike Cottage, Heckfield, Hook, Hampshire, RG27 0LE |
| BEESTON, Kevin Stanley RESIGNED | Director | 22 Sep 1999 | 17 Apr 2003 | | September 1962 | Serco House, 16bartley Wood Business Park, Bartley Way Hook, Hampshire, RG27 9UY |
| BENNETT, Seton John, Dr RESIGNED | Director | 01 Oct 2001 | 01 Sep 2009 | United Kingdom | July 1945 | 5 Southfield Gardens, Twickenham, TW1 4SZ |
| BOWSHER, Brian Robert, Doctor RESIGNED | Director | 01 Mar 2009 | 30 Jun 2015 | United Kingdom | July 1957 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, England |
| BROOK, Richard Anthony RESIGNED | Director | 01 Mar 2004 | 31 Dec 2015 | England | July 1944 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, England |
| BROOK, Richard Anthony RESIGNED | Director | 25 Oct 2000 | 17 Apr 2003 | England | July 1944 | 6 Logs Hill, Chislehurst, Kent, BR7 5LW |
| BROOKS, Amanda Melanie Kendall RESIGNED | Director | 01 Jan 2015 | 30 Jul 2016 | England | April 1971 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, England |
| BRYAN, Everton RESIGNED | Director | 18 Jan 1995 | 01 Sep 1995 | | May 1959 | 1 Hartland Close, Elmscott Gardens Winchmore Hill, London, N21 2BG |
| BULLOUGH, Ronald, Professor RESIGNED | Director | 01 Sep 1995 | 01 Oct 1998 | | April 1931 | 4 Long Meadow, Manor Road, Goring, Berkshire, RG8 9EQ |
| CORNWELL, Anthony Bruce RESIGNED | Director | 18 Jan 1995 | 01 Sep 1995 | United Kingdom | February 1943 | The Cottage 134 London Road, Bagshot, Surrey, GU19 5BZ |
| DOWNIE, Ian Wilson RESIGNED | Director | 27 Jul 2011 | 01 Jan 2015 | England | July 1955 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, England |
| DUNNE, Timothy James Lawson, Professor RESIGNED | Director | 17 May 2025 | 15 Sep 2025 | United Kingdom | February 1965 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| DUNSBY, Louise RESIGNED | Director | 01 Oct 2020 | 11 Feb 2021 | England | December 1983 | 1 Victoria Street, Victoria Street, London, SW1H 0ET, England |
| GANGE, Peter Alan RESIGNED | Director | 01 Sep 1995 | 26 Nov 1996 | | March 1947 | Heatherside Court, 9 Augustus Gardens, Camberley, Surrey, GU15 1HL |
| GIACHARDI, David John, Dr RESIGNED | Director | 25 Jan 1999 | 30 Sep 2001 | United Kingdom | May 1948 | Laburnum Cheverells Green, Markyate, St Albans, Hertfordshire, AL3 8RN |
| GRANT, David, Sir RESIGNED | Director | 01 May 2015 | 30 Sep 2021 | Wales | September 1947 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, England |
| GRAY, George Gowans, Dr RESIGNED | Director | 29 Oct 1997 | 30 Sep 2002 | | January 1938 | 19 Lakeside Grange, Weybridge, Surrey, KT13 9ZE |
| GRAY, George Gowans, Dr RESIGNED | Director | 01 Sep 1995 | 13 Nov 1996 | | January 1938 | 19 Lakeside Grange, Weybridge, Surrey, KT13 9ZE |
| HADLEY, Paul Simon RESIGNED | Director | 27 Apr 2016 | 12 Nov 2018 | England | June 1965 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| HART, Robin, Dr RESIGNED | Director | 01 Jan 2022 | 14 Feb 2023 | England | May 1964 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| HOWARTH, Paul John Arton, Dr RESIGNED | Director | 01 Jan 2015 | 04 Jan 2021 | England | August 1970 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, England |
| HOWIE, Archibald, Professor RESIGNED | Director | 01 Sep 1995 | 30 Sep 2001 | | March 1934 | 194 Huntingdon Road, Cambridge, Cambridgeshire, CB3 0LB |
| HURST, Stephanie, Dr RESIGNED | Director | 12 Nov 2018 | 14 Aug 2020 | England | August 1961 | 1 Victoria Street, Victoria Street, London, SW1H 0ET, England |
| KEARNEY, Michael RESIGNED | Director | 28 Sep 2015 | 01 Jan 2017 | England | November 1962 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| KELLY, Anthony, Professor RESIGNED | Director | 01 Sep 1995 | 30 Sep 2001 | United Kingdom | January 1929 | 29 Madingley Road, Cambridge, CB3 0EG |
| LAWLOR, Timothy Charles RESIGNED | Director | 27 Jan 2010 | 27 Jul 2011 | United Kingdom | November 1970 | Serco House 16 Bartley Wood, Business Park Bartley Way, Hook, Hampshire, RG27 9UY |
| LEWIS, Nesta Margaret RESIGNED | Nominee Director | 10 Jun 1994 | 29 Sep 1994 | Wales | January 1931 | 39 The Hawthorns, Pant, Merthyr Tydfil, Mid Glamorgan, CF48 2EJ |
| LU, Gaoqing Max RESIGNED | Director | 01 Jan 2017 | 17 May 2025 | United Kingdom | November 1963 | Blackwell House, Hogs Back, Guildford, GU3 1DF, England |
| MANN, Alan Raymond RESIGNED | Director | 18 Jan 1995 | 01 Jan 2013 | United Kingdom | November 1949 | Serco House 16 Bartley Wood, Business Park Bartley Way, Hook, Hampshire, RG27 9UY |
| MARSH, Maxwell Clive, Dr RESIGNED | Director | 28 Jan 2004 | 31 Jan 2008 | | May 1943 | Awe Plc, Aldermaston, Reading, Berkshire, RG7 4PR |
| MCDONALD, James Rufus, Professor Sir RESIGNED | Director | 21 May 2015 | 10 Sep 2025 | Scotland | April 1957 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, England |
| MCGUINESS, Robert Clayton, Dr RESIGNED | Director | 16 Mar 2000 | 26 Jul 2007 | United Kingdom | December 1951 | Serco House, Bartley Wood Business Park, Bartley Way, Hook, Hampshire, RG27 9UY |
| MCQUILLAN, Stephen RESIGNED | Director | 26 Jan 2005 | 30 Sep 2008 | United Kingdom | August 1961 | Naleek, Church Lane, Chearsley, Aylesbury, Buckinghamshire, HP18 0DF |
| MCSWEENEY, David Keith RESIGNED | Director | 14 Jun 2023 | 19 Feb 2024 | England | October 1958 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| PERRY, Nigel John RESIGNED | Director | 01 Jun 2016 | 24 May 2022 | England | January 1957 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| RAE, John, Doctor RESIGNED | Director | 01 Sep 1995 | 31 Dec 2005 | | September 1942 | Larksfield South Row, Chilton, Didcot, Oxfordshire, OX11 0RT |
| RICHARDSON, David Charles RESIGNED | Director | 01 Mar 2004 | 30 Jun 2006 | | December 1958 | Church House, East Challow, Wantage, Oxfordshire, OX12 9SR |
| RICHARDSON, David Charles RESIGNED | Director | 07 Oct 1998 | 17 Apr 2003 | | December 1958 | Church House, East Challow, Wantage, Oxfordshire, OX12 9SR |
| SANDFORD, David Alexander RESIGNED | Director | 09 Jan 2023 | 04 Sep 2023 | England | June 1981 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| SAWARD, Victoria Helen, Dr RESIGNED | Director | 02 Oct 2023 | 25 Feb 2026 | England | December 1972 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| SENE, Martyn Russell RESIGNED | Director | 28 Oct 2009 | 31 Dec 2021 | England | April 1957 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, England |
| SNOWDEN, Christopher Maxwell, Professor Sir RESIGNED | Director | 01 Apr 2015 | 28 Sep 2015 | United Kingdom | March 1956 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, England |
| SUTCLIFFE, Brigid Ann RESIGNED | Director | 01 Mar 2016 | 28 Sep 2022 | England | July 1959 | 6, Holmbush Road, London, SW15 3LE, England |
| WALLACE, Harriet RESIGNED | Director | 11 Feb 2021 | 09 Jan 2023 | England | September 1977 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW |
| WALLARD, Andrew John, Dr RESIGNED | Director | 01 Oct 1995 | 28 Feb 2002 | | October 1945 | Oakhanger, Boughton Hall Avenue Send, Woking, Surrey, GU23 7DF |
| WHELAN, Robert Charles, Dr RESIGNED | Director | 01 Sep 1995 | 01 Oct 1998 | England | July 1942 | 36 Green End, Comberton, Cambridge, Cambridgeshire, CB3 7DY |
| WILLIAMS, Peter Michael, Sir RESIGNED | Director | 01 Jan 2002 | 01 Jan 2015 | England | March 1945 | National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, England |
| WYKE, John Brynley RESIGNED | Director | 07 Oct 1998 | 15 Sep 1999 | | August 1951 | 5 Lychgate Close, Sandhurst, Berkshire, GU47 8JH |