| KELLY, Susan Kathleen ACTIVE | Secretary | 21 Dec 2007 | | | | Linde, Forge, 43 Church Street West, Woking, Surrey, GU21 6HT, England |
| BLAND, Julian Michael ACTIVE | Director | 18 Jul 2018 | | England | April 1967 | Linde, Forge, 43 Church Street West, Woking, Surrey, GU21 6HT, England |
| COSSINS, Christopher James ACTIVE | Director | 15 Nov 2021 | | England | November 1966 | Linde, Forge, 43 Church Street West, Woking, Surrey, GU21 6HT, England |
| KELLY, Susan Kathleen ACTIVE | Director | 01 Nov 2024 | | England | July 1966 | Linde, Forge, 43 Church Street West, Woking, Surrey, GU21 6HT, England |
| WILLIAMS, Sally Ann ACTIVE | Director | 14 Dec 2015 | | England | August 1970 | Linde, Forge, 43 Church Street West, Woking, Surrey, GU21 6HT, England |
| BAKER, Ian Kenneth Hood RESIGNED | Secretary | 02 Dec 1994 | 03 Jul 1995 | | | 33 Atfield Grove, Windlesham, Surrey, GU20 6DP |
| BRACKFIELD, Andrew Christopher RESIGNED | Secretary | 20 Jul 2007 | 21 Dec 2007 | | | The Linde Group, Priestley Centre 10 Priestley Rd, Surrey Research Park, Guildford, Surrey, GU2 7XY |
| HUNT, Carol Anne RESIGNED | Secretary | 12 Feb 1999 | 02 Oct 2006 | | | The Boc Group, Chertsey Road, Windlesham, Surrey, GU20 6HJ |
| LARKINS, Sarah Louise RESIGNED | Secretary | 03 Oct 2006 | 20 Jul 2007 | | | 11 Bluebell Road, Lindford, Bordon, Hampshire, GU35 0YN |
| PAVEY, David Gordon RESIGNED | Secretary | 13 Jan 1994 | 02 Dec 1994 | | | 28 Malthouse Close, Church Crookham, Fleet, Hampshire, GU13 0TB |
| REED, Bryan James RESIGNED | Secretary | 22 Nov 1991 | 13 Jan 1994 | | | 184 Swakeleys Road, Ickenham, Uxbridge, Middlesex, UB10 8AZ |
| SMALL, Jeremy Peter RESIGNED | Secretary | 03 Jul 1995 | 12 Feb 1999 | | | Cherry Trees, West Heath, Pirbright, Surrey, GU24 0JQ |
| BAKER, Ian Kenneth Hood RESIGNED | Director | | 04 Jan 1994 | | September 1951 | 33 Atfield Grove, Windlesham, Surrey, GU20 6DP |
| BRACKFIELD, Andrew Christopher RESIGNED | Director | 23 Feb 2007 | 31 Dec 2018 | England | March 1956 | The Linde Group, Priestley Centre 10 Priestley Rd, Surrey Research Park, Guildford, Surrey, GU2 7XY |
| CHIPCHASE, Graham Andrew RESIGNED | Director | 01 Jun 1999 | 31 Aug 2001 | | January 1963 | Brook Cottage, Kings Saltern Road, Lymington, Hampshire, SO41 3QH |
| CHOW, Chung Kong, Sir RESIGNED | Director | 19 Jan 1996 | 30 Jun 1996 | | September 1950 | Flat 10, 20 Lowndes Square, London, SW1X 9HD |
| CLUBB, Ian Mcmaster RESIGNED | Director | 04 Jan 1994 | 30 Sep 1994 | | January 1941 | Pond House, Hadley Green, Hertfordshire, EN5 4PS |
| CONNELL, William Edward RESIGNED | Director | 04 Jan 1994 | 01 Jun 1999 | | September 1942 | Maedan Merrywood Copse, 65 Portsmouth Road, Camberley, Surrey, GU15 1JD |
| DEEMING, Nicholas RESIGNED | Director | 16 May 2001 | 26 Jun 2007 | | February 1954 | The Boc Group Plc, Chertsey Road, Windlesham, Surrey, GU20 6HJ |
| DENNIS, Michael RESIGNED | Director | 01 Jul 2009 | 10 Apr 2012 | | November 1958 | Boc Limited, Priestley Centre, 10 Priestley Road, Guildford, Surrey, GU2 7XY |
| DEVERS, Dorian Kevin Thomas RESIGNED | Director | 21 Jan 2013 | 28 Jul 2017 | England | December 1975 | The Linde Group, The Priestley Centre, 10 Priestley Road, Surrey Research Park, Guildford, Surrey, GU2 7XY, England |
| DYER, Alexander Patrick RESIGNED | Director | 04 Jan 1994 | 19 Jan 1996 | | August 1932 | 5 Lowndes Court, Lowndes Square, London, SW1X 9JJ |
| FERGUSON, Alan Murray RESIGNED | Director | 15 Sep 2005 | 23 Feb 2007 | | January 1958 | The Boc Group, Chertsey Road, Windlesham, Surrey, GU20 6HJ |
| FINKEN, Thorben, Dr RESIGNED | Director | 22 Dec 2008 | 20 Jan 2013 | England | May 1971 | The Linde Group, The Priestley Centre, 10 Priestley Road, Surrey Research Park, Guildford, Surrey, GU2 7XY |
| ISAAC, Anthony Eric RESIGNED | Director | 17 Oct 1994 | 31 Oct 2006 | | November 1941 | The Boc Group, Chertsey Road, Windlesham, Surrey, GU20 6HJ |
| KIRK, Christopher William RESIGNED | Director | 22 Nov 1991 | 26 Jan 1994 | | June 1956 | Boulters, Onslow Road, Ascot, Berkshire, SL5 0HW |
| LEWIS, Nigel Andrew RESIGNED | Director | 16 Aug 2008 | 30 Jun 2009 | United Kingdom | April 1956 | The Linde Group The Priestley, Centre 10 Priestley Rd The Surrey, Research Park, Guildford, Surrey, GU2 7XY |
| MASTERS JR, Jerry Kent RESIGNED | Director | 01 Mar 2005 | 16 Aug 2010 | | December 1960 | The Linde Group The Priestley Centre, 10 Priestley Rd, The Surrey Research Park, Guildford, Surrey, GU2 7XY |
| MEDORI, Rene RESIGNED | Director | 17 Jul 2000 | 31 May 2005 | | September 1957 | Woodhaven Green, Wood Lane St George's Hill, Weybridge, Surrey, KT13 0JU |
| MOSTYN, Gareth RESIGNED | Director | 21 Dec 2007 | 15 Aug 2008 | | June 1972 | The Linde Group The Priestley Centre, 10 Priestley Road Surrey Research Park, Guildford, Surrey, GU2 7XY |
| PALMER, Nathan RESIGNED | Director | 10 Apr 2012 | 15 Apr 2016 | England | December 1970 | The Linde Group, The Priestley Centre, 10 Priestley Road, Guildford, Surrey, GU2 7XY, England |
| PATTERSON, Benjamin RESIGNED | Director | 07 Sep 2018 | 09 Oct 2024 | England | May 1962 | Linde, Forge, 43 Church Street West, Woking, Surrey, GU21 6HT, England |
| REED, Bryan James RESIGNED | Director | 22 Nov 1991 | 04 Jan 1994 | | February 1936 | 184 Swakeleys Road, Ickenham, Uxbridge, Middlesex, UB10 8AZ |
| ROSENKRANZ, Franklin Daniel RESIGNED | Director | 04 Jan 1994 | 31 Aug 1999 | United Kingdom | May 1945 | Windrush, Coombe End, Kingston-Upon-Thames, Surrey, KT2 7DQ |
| SAITH, Vijay Kumar RESIGNED | Director | 30 Jun 1996 | 20 Nov 2002 | | March 1944 | Pendennis, Pyrford Road, West Byfleet, Surrey, KT14 6RQ |
| SPENCE, Patrick Charles Gordon RESIGNED | Director | 07 Jan 2002 | 21 Dec 2007 | | June 1958 | The Linde Group The Priestley Centre, 10 Priestley Road, Surrey Research Park, Surrey, GU2 7XY |
| STUART, Gloria Jean RESIGNED | Director | 01 Jun 1994 | 15 Dec 2000 | United Kingdom | October 1952 | Appin Lodge, Long Hill The Sands, Farnham, Surrey, GU10 1NQ |
| TARALLO, Angelo Nicholas RESIGNED | Director | 04 Jan 1994 | 01 Jun 1994 | | May 1940 | Park Cottage, Broomfield Park, Sunningdale, Berkshire, SL5 0JT |
| WALSH, John Lawrence RESIGNED | Director | 11 Jul 2002 | 01 Mar 2005 | | August 1955 | The Boc Group, Chertsey Road, Windlesham, Surrey, GU20 6HJ |