| FURLONGER, Marc ACTIVE | Director | 30 Apr 2018 | | England | September 1972 | Level 10, 255 Blackfriars Road, London, SE1 9AX, England |
| WHYTE, Matthew John ACTIVE | Director | 01 Aug 2021 | | England | March 1974 | Level 10, 255 Blackfriars Road, London, SE1 9AX, England |
| BURDETT, Neil Robert RESIGNED | Secretary | 11 Dec 2000 | 05 Apr 2017 | | | 2nd, Floor, Cardinal Place 80 Victoria Street, London, SW1E 5JL |
| GILLESPIE, Fiona Margaret RESIGNED | Secretary | 21 Apr 2017 | 14 Jan 2022 | | | C/O Smiths Group Plc, 4th Floor, 11-12 St James's Square, London, SW1Y 4LB, England |
| GLICK, Steven Marc RESIGNED | Secretary | 22 Jun 1992 | 28 Feb 1997 | | | 15 Eton Villas, London, NW3 4SG |
| IRVING, Lawrence Davidson RESIGNED | Secretary | 28 Feb 1997 | 02 Oct 1997 | | | 4 Augustus Gardens, Camberley, Surrey, GU15 1HL |
| LESTER, Donald Henry John RESIGNED | Secretary | | 22 Jun 1992 | | | 5 Meadow Road, Great Gransden, Sandy, Bedfordshire, SG19 3BD |
| MACANDREWS, Laura Struan RESIGNED | Secretary | 14 Jan 2022 | 01 Mar 2024 | | | Level 10, 255 Blackfriars Road, London, SE1 9AX, England |
| MALONEY, Kiera Nicole RESIGNED | Secretary | 01 Mar 2024 | 21 Jul 2025 | | | Level 10, 255 Blackfriars Road, London, SE1 9AX, England |
| SMITH, Alan RESIGNED | Secretary | 02 Oct 1997 | 11 Dec 2000 | | | 37 Pattison Road, London, NW2 2HL |
| BROAD, Donald Andrew Robertson RESIGNED | Director | 17 Dec 2008 | 30 Sep 2013 | United Kingdom | May 1951 | 2nd, Floor, Cardinal Place 80 Victoria Street, London, SW1E 5JL |
| BROAD, Donald Andrew Robertson RESIGNED | Director | 02 Oct 1997 | 31 Jul 2007 | | May 1951 | 765 Finchley Road, London, NW11 8DS |
| BROWN, John Peter Robert RESIGNED | Director | | 11 May 1995 | | November 1942 | Merrowdown, The Warren, East Horsley, Surrey, KT24 5RH |
| BURDETT, Neil Robert RESIGNED | Director | 14 Oct 2014 | 05 Apr 2017 | England | June 1955 | 4th Floor, 11-12 St James's Square, London, SW1Y 4LB, England |
| CAMERON, Sarah Louise RESIGNED | Director | 28 Nov 2008 | 30 Sep 2014 | | October 1964 | 2nd, Floor, Cardinal Place 80 Victoria Street, London, SW1E 5JL |
| COOK, Kenneth William RESIGNED | Director | | 15 Oct 1992 | | June 1925 | Rusper Woodland Way, Kingswood, Tadworth, Surrey, KT20 6NU |
| COOPER, John RESIGNED | Director | 31 May 1995 | 30 Jun 1998 | | September 1947 | 22 Coppice Avenue, Great Shelford, Cambridge, Cambridgeshire, CB2 5AQ |
| FLOWERDAY, David Nicholas RESIGNED | Director | 02 Oct 1997 | 01 Jun 2002 | England | August 1952 | The Hollands, Ampthill Park House, Ampthill, Bedfordshire, MK45 2HF |
| GEROSKI, Paul Andrew, Dr RESIGNED | Director | 31 May 1995 | 02 Oct 1997 | | October 1952 | 67 Leyland Road, Lee, London, SE12 8DW |
| GLICK, Steven Marc RESIGNED | Director | 31 May 1995 | 28 Feb 1997 | | January 1957 | 15 Eton Villas, London, NW3 4SG |
| HAWKINS, John Eric RESIGNED | Director | 01 Jul 1997 | 10 Oct 1997 | England | October 1953 | Craven House, Hamstead Marshall, Newbury, Berkshire, RG20 0JG |
| HOWARD, Ronald John Frederick RESIGNED | Director | | 15 Oct 1992 | England | September 1921 | 5 Ordnance Mews, St John's Wood, London, NW8 6PF |
| IRVING, Lawrence Davidson RESIGNED | Director | 18 Sep 1995 | 28 Nov 1997 | | November 1949 | 4 Augustus Gardens, Camberley, Surrey, GU15 1HL |
| JACKSON, John Bernard Haysom RESIGNED | Director | | 02 Oct 1997 | United Kingdom | May 1929 | Summit House, Red Lion Square, London, WC1R 4QB |
| KERR-MUIR, James Rodier RESIGNED | Director | 15 Oct 1992 | 02 Oct 1997 | | March 1941 | Flat 8 71 Elm Park Gardens, London, SW10 9QE |
| KING, Richard Ashton RESIGNED | Director | | 11 May 1995 | England | August 1929 | 8 Barrow Road, Cambridge, Cambridgeshire, CB2 2AS |
| LEONARD, Jack Lawrence, Dr RESIGNED | Director | | 02 Oct 1997 | | November 1931 | Downs Edge Stable Lane, Findon, Worthing, West Sussex, BN14 0RR |
| LESTER, Paul John RESIGNED | Director | | 30 Jun 1997 | | September 1949 | Monkspool Churchend, Twyning, Tewkesbury, Gloucestershire, GL20 6DA |
| MCKEOWN, Matthew Robin RESIGNED | Director | 28 Nov 2017 | 30 Apr 2018 | England | January 1980 | C/O Smiths Group Plc, 4th Floor, 11-12 St James's Square, London, SW1Y 4LB, England |
| MILLS, John Michael RESIGNED | Director | 06 Mar 2019 | 31 Jul 2021 | United Kingdom | January 1964 | C/O Smiths Group Plc, 4th Floor, 11-12 St James's Square, London, SW1Y 4LB, England |
| O'BRIEN, Susan Lynn RESIGNED | Director | 31 Jul 2007 | 31 Jul 2008 | | April 1968 | 180 Longfield Lane, Cheshunt, Waltham Cross, Hertfordshire, EN7 6AQ |
| PENN, David Alfred RESIGNED | Director | 16 May 2006 | 28 Nov 2008 | England | February 1958 | 2 Salmons Lane, Middleton Cheney, Banbury, Oxon, OX17 2NF |
| PETERS, Anthony Graham RESIGNED | Director | | 30 Sep 1994 | | July 1942 | 8 Haley Close, Hemingford Grey, Huntingdon, Cambridgeshire, PE18 9BU |
| RALPH, Alexandra RESIGNED | Director | 26 Nov 2013 | 21 Nov 2017 | England | July 1974 | 4th Floor, 11-12 St James's Square, London, SW1Y 4LB, England |
| ROWLANDS, Melanie Jane RESIGNED | Director | 21 Apr 2017 | 06 Mar 2019 | United Kingdom | August 1968 | C/O Smiths Group Plc, 4th Floor, 11-12 St James's Square, London, SW1Y 4LB, England |
| SPENCER, David Malcolm RESIGNED | Director | 02 Oct 1997 | 04 Dec 2001 | | July 1957 | The Old Church House, Church Road, Sunningdale, Berkshire, SL5 0NL |
| THOMSON, Alan Matthew RESIGNED | Director | 02 Oct 1997 | 06 Sep 2006 | | September 1946 | 765 Finchley Road, London, NW11 8DS |
| VAN HORN, Karl Robertson RESIGNED | Director | 01 Jan 1997 | 02 Oct 1997 | | February 1935 | 11 Launceston Place, London, W8 5RL |