| GLOVER, Lucy ACTIVE | Secretary | 04 Feb 2022 | | | | Level 10, 255 Blackfriars Road, London, SE1 9AX, England |
| BOUCHER, Timothy Montfort ACTIVE | Director | 04 Feb 2022 | | England | July 1967 | Level 10, 255 Blackfriars Road, London, SE1 9AX, England |
| GLOVER, Lucy ACTIVE | Director | 10 Apr 2026 | | England | June 1982 | Level 10, 255 Blackfriars Road, London, SE1 9AX, England |
| KENNY, Alexander St. John Stopford ACTIVE | Director | 04 Feb 2022 | | England | May 1971 | Level 10, 255 Blackfriars Road, London, SE1 9AX, England |
| BURDETT, Neil Robert RESIGNED | Secretary | 27 Nov 2007 | 05 Apr 2017 | | | 2nd, Floor, Cardinal Place 80 Victoria Street, London, SW1E 5JL |
| GILLESPIE, Fiona Margaret RESIGNED | Secretary | 20 Apr 2017 | 03 Nov 2021 | | | C/O Smiths Group Plc, 4th Floor, 11-12 St James's Square, London, SW1Y 4LB, England |
| PENN, David Alfred RESIGNED | Secretary | | 27 Nov 2007 | | | 2 Salmons Lane, Middleton Cheney, Banbury, Oxon, OX17 2NF |
| WALKER, Denis RESIGNED | Secretary | | 05 Oct 1993 | | | 28 Lionel Street, Burnley, Lancashire, BB12 6DY |
| WHYTE, Matthew John RESIGNED | Secretary | 04 Nov 2021 | 04 Feb 2022 | | | C/O Smiths Group Plc, 4th Floor, 11-12 St James's Square, London, SW1Y 4LB, England |
| ANGLE, Martin David RESIGNED | Director | 18 Sep 1998 | 04 Dec 2000 | England | April 1950 | Cantorist House, Childrey, Wantage, Oxfordshire, OX12 9UJ |
| BROAD, Donald Andrew Robertson RESIGNED | Director | 11 Dec 2008 | 30 Sep 2013 | United Kingdom | May 1951 | 2nd, Floor, Cardinal Place 80 Victoria Street, London, SW1E 5JL |
| CAMERON, Sarah Louise RESIGNED | Director | 23 Jul 2008 | 30 Sep 2014 | | October 1964 | 2nd, Floor, Cardinal Place 80 Victoria Street, London, SW1E 5JL |
| EDWARDS, John Ralph RESIGNED | Director | 18 Sep 1998 | 22 Feb 2002 | United Kingdom | January 1950 | Green Hedges, 25 Saint Johns Street, Crowthorne, Berkshire, RG45 7NJ |
| EVANS, Sheena Mary RESIGNED | Director | 25 May 2021 | 04 Feb 2022 | United Kingdom | May 1961 | C/O Smiths Group Plc, 4th Floor, 11-12 St James's Square, London, SW1Y 4LB, England |
| FAGGE, Julian David Kenelm RESIGNED | Director | 25 May 2021 | 04 Feb 2022 | England | June 1973 | C/O Smiths Group Plc, 4th Floor, 11-12 St James's Square, London, SW1Y 4LB, England |
| FAGGE, Julian RESIGNED | Director | 30 Sep 2013 | 07 Dec 2017 | England | June 1973 | 4th Floor, 11-12 St James's Square, London, SW1Y 4LB, England |
| GARNER, Michael Frederick RESIGNED | Director | | 24 Jun 1993 | United Kingdom | April 1937 | Old Drews, Knotty Green, Beaconsfield, Buckinghamshire, HP9 2TT |
| HERLIHY, Michael Hugh Creedon RESIGNED | Director | 11 Dec 2008 | 18 Sep 2015 | United Kingdom | March 1953 | C/O Smiths Group Plc, C/O Smiths Group Plc, 2nd Floor, Cardinal Place, 80 Victoria Street, London, SW1E 5JL |
| KENNY, Alexander St. John Stopford RESIGNED | Director | 24 Sep 2018 | 31 Dec 2020 | England | May 1971 | C/O Smiths Group Plc, 4th Floor, 11-12 St James's Square, London, SW1Y 4LB, England |
| LILLYCROP, David Peter RESIGNED | Director | 24 Jun 1993 | 24 Jun 1993 | | June 1956 | Canal Cottage, Halton Village, Buckinghamshire, HP22 5NS |
| LILLYCROP, David Peter RESIGNED | Director | | 12 Jun 2008 | United Kingdom | June 1956 | 765 Finchley Road, London, NW11 8DS |
| MILLS, John Michael RESIGNED | Director | 09 Jul 2018 | 31 Dec 2020 | United Kingdom | January 1964 | C/O Smiths Group Plc, 4th Floor, 11-12 St James's Square, London, SW1Y 4LB, England |
| MONTAGUE, George James RESIGNED | Director | 23 Aug 2017 | 26 Jul 2019 | England | November 1964 | C/O Smiths Group Plc, 4th Floor, 11-12 St James's Square, London, SW1Y 4LB, England |
| NORRIS, Guy Mervyn RESIGNED | Director | 18 Sep 1998 | 31 Aug 2007 | | May 1946 | The Dower House, Church Road Snitterfield, Stratford Upon Avon, CV37 0LF |
| PENN, David Alfred RESIGNED | Director | 22 Feb 2002 | 28 Nov 2008 | England | February 1958 | 2 Salmons Lane, Middleton Cheney, Banbury, Oxon, OX17 2NF |
| ROWLANDS, Melanie Jane RESIGNED | Director | 01 Sep 2014 | 31 Dec 2020 | United Kingdom | August 1968 | 4th Floor, 11-12 St James's Square, London, SW1Y 4LB, England |
| SAUNDERS, Denis RESIGNED | Director | | 18 Sep 1998 | | April 1934 | Lime Tree House 3 Tapster Court, Bushwood Lane, Lapworth, Warwickshire, B94 5PJ |
| SHIPSEY, John Francis RESIGNED | Director | 31 Dec 2020 | 04 Feb 2022 | United Kingdom | August 1964 | C/O Smiths Group Plc, 4th Floor, 11-12 St James's Square, London, SW1Y 4LB, England |
| SMITH, Andrew Reynolds, Mr A R Smith RESIGNED | Director | 31 Dec 2020 | 25 May 2021 | England | May 1966 | C/O Smiths Group Plc, 4th Floor, 11-12 St James's Square, London, SW1Y 4LB, England |
| SMITH, Jameson Robert Mark RESIGNED | Director | 03 Nov 2015 | 24 Sep 2018 | England | March 1962 | 4th Floor, 11-12 St James's Square, London, SW1Y 4LB, England |
| STONE, Zillah Wendy RESIGNED | Director | 05 Nov 2014 | 28 May 2015 | United Kingdom | March 1965 | 2nd Floor, Cardinal Place, 80 Victoria Street, London, SW1E 5JL, England |
| SUMNER, Anthony John RESIGNED | Director | | 18 Sep 1998 | | December 1931 | Manor Farm House, Taynton, Burford, Oxfordshire, OX18 4UB |
| VERE-HODGE, Nicholas Miles RESIGNED | Director | | 05 Oct 1994 | England | September 1943 | Tower House, Souldern, Bicester, Oxfordshire, OX27 7HY |
| WALSH, Brian Augustine RESIGNED | Director | 24 Jun 1993 | 18 Sep 1998 | | May 1944 | Rye Lodge Cokes Lane, Chalfont St Giles, Buckinghamshire, HP8 4TZ |
| WHYTE, Matthew John RESIGNED | Director | 04 Feb 2022 | 10 Apr 2026 | England | March 1974 | Level 10, 255 Blackfriars Road, London, SE1 9AX, England |