| BROWELL-HOOK, Matthew David ACTIVE | Director | 01 Sep 2025 | | United Kingdom | March 1983 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| HARRISON, Nicholas Charles ACTIVE | Director | 31 Jul 2024 | | United Kingdom | January 1967 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| HEPBURN, Peter Wilson ACTIVE | Director | 18 Jul 2025 | | United Kingdom | December 1971 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| BOWDEN, Michael RESIGNED | Secretary | 14 May 2001 | 30 Nov 2001 | | | Appledene, 3 Leaze Road, Marlborough, Wiltshire, SN8 1JU |
| MACLEOD, Nicola RESIGNED | Secretary | 29 Jan 2019 | 31 Jul 2024 | | | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| CENTRICA SECRETARIES LIMITED RESIGNED | Secretary | 30 Nov 2001 | 31 Dec 2018 | | | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| HSE SECRETARIES LIMITED RESIGNED | Secretary | 16 Mar 2001 | 01 Jun 2001 | | | 7 Devonshire Square, Cutlers Gardens, London, EC2M 4YH |
| BARTHOLOMEW, Iain Douglas, Dr RESIGNED | Director | 08 Feb 2010 | 31 Oct 2014 | United Kingdom | July 1958 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| BEVINGTON, Andrew Richard RESIGNED | Director | 01 Jan 2014 | 13 Jul 2016 | England | June 1968 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| BIRD, Christopher Terence RESIGNED | Director | 08 Feb 2010 | 16 Apr 2012 | Scotland | October 1960 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| CLARK, Simon Richard RESIGNED | Director | 28 Nov 2007 | 05 Mar 2010 | | January 1964 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| CLARKE, David RESIGNED | Director | 30 Nov 2001 | 17 Sep 2003 | | April 1953 | 38 London Road, Harston, Cambridge, CB2 5QH |
| COLE, Peter RESIGNED | Director | 05 Aug 2004 | 27 Jan 2010 | | December 1951 | Longmead, South Stoke Road, Woodcote, Reading, Berkshire, RG8 0PL |
| COUNT, Brian Morrison, Dr RESIGNED | Director | 14 May 2001 | 30 Nov 2001 | England | February 1951 | Oakwood House, Blindmans Gate Woolton Hill, Newbury, Berkshire, RG20 9XD |
| DE LEEUW, Paul RESIGNED | Director | 11 May 2011 | 16 Aug 2013 | Scotland | February 1964 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| FLETCHER, Stephen Paul RESIGNED | Director | 14 May 2001 | 30 Nov 2001 | England | March 1961 | Chestnut House, Manor Farm Barns, Coln St Aldwyns, Gloucestershire, GL7 5AD |
| GARSTANG, Michael John RESIGNED | Director | 30 Nov 2001 | 30 Jun 2008 | United Kingdom | June 1948 | Knott Barn, Tatham Fells, Wray, Lancaster, LA2 8PS |
| HANAFIN, Vincent Mark RESIGNED | Director | 31 Jul 2008 | 08 Feb 2010 | United Kingdom | October 1959 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| HARRISON, Gerald Martin RESIGNED | Director | 08 Dec 2017 | 24 Jun 2022 | United Kingdom | February 1954 | 1st Floor, 20 Kingston Road, Staines-Upon-Thames, TW18 4LG, England |
| HEDLEY, Paul Ian, Mr. RESIGNED | Director | 01 Sep 2011 | 25 Oct 2013 | United Kingdom | October 1969 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| HENSHAW, Anthony Charles RESIGNED | Director | 30 Nov 2001 | 15 Jul 2004 | | April 1954 | Wentworth Gate, East Drive, Virginia Water, Surrey, GU25 4JY |
| KABRA, Girish Rajkumar RESIGNED | Director | 05 Aug 2022 | 13 Mar 2025 | United Kingdom | September 1978 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| LE POIDEVIN, Andrew Daryl RESIGNED | Director | 27 Feb 2014 | 08 Dec 2017 | England | April 1958 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| MACLEOD, Nicola Jane RESIGNED | Director | 11 Sep 2018 | 31 Jul 2024 | Scotland | March 1974 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| MADDOCK, Nicholas William RESIGNED | Director | 08 Feb 2010 | 05 Jul 2011 | United Kingdom | January 1971 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| MARTINSEN, Rune RESIGNED | Director | 01 Jun 2018 | 31 Dec 2018 | Norway | January 1965 | Centrica Energi, Roosenberggata 99, 4007 Stavanger, Norway |
| MCCALLUM, Craig RESIGNED | Director | 16 Apr 2012 | 01 Jan 2014 | Scotland | June 1968 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| MCCULLOCH, Neil James RESIGNED | Director | 01 Jan 2019 | 29 Sep 2023 | Scotland | October 1970 | 1st Floor, 20 Kingston Road, Staines-Upon-Thames, TW18 4LG, England |
| MCGINIGAL, Scott RESIGNED | Director | 29 Sep 2023 | 18 Jul 2025 | United Kingdom | October 1971 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| MCKENNA, Gregory Craig RESIGNED | Director | 01 Jan 2014 | 31 Jan 2015 | United Kingdom | January 1966 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| MCKENNA, Gregory Craig RESIGNED | Director | 08 Feb 2010 | 16 Apr 2012 | United Kingdom | January 1966 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| MEW, Richard Martin RESIGNED | Director | 15 May 2006 | 19 Mar 2010 | England | April 1956 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| NICOL, Matthew Bruce RESIGNED | Director | 31 Jan 2015 | 09 May 2016 | United Kingdom | April 1971 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| ROGER, Jonathan Leslie RESIGNED | Director | 08 Feb 2010 | 20 May 2013 | United Kingdom | May 1969 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| SAMBHI, Sarwjit RESIGNED | Director | 20 May 2013 | 01 Jan 2014 | United Kingdom | July 1969 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| SAMBHI, Sarwjit RESIGNED | Director | 17 Sep 2003 | 28 Apr 2005 | | July 1969 | Old Priory, The Green, Datchet, Berkshire, SL3 9JL |
| SHEARS, John Nicholas RESIGNED | Director | 28 Apr 2005 | 08 Feb 2010 | British | October 1958 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| SHEARS, John Nicholas RESIGNED | Director | 30 Nov 2001 | 01 Jan 2002 | British | October 1958 | Lovania Birch Lane, Ascot, Berkshire, SL5 8RF |
| TANNER, Paul Martyn, Roger RESIGNED | Director | 09 May 2016 | 31 May 2018 | Scotland | July 1973 | Iq Building, 15 Justice Mill Lane, Aberdeen, AB11 6EQ, United Kingdom |
| ULRICH, Jacob Shields RESIGNED | Director | 30 Nov 2001 | 31 Jul 2008 | England | February 1953 | 74 Drayton Gardens, London, SW10 9SB |
| WEIR, Fraser Dawson RESIGNED | Director | 13 Jul 2016 | 31 May 2018 | Netherlands | February 1972 | Transpolis Building, Polarisavenue 39, 2132 Jh Hoofddorp, Netherlands |
| WILSON, David Ross, Eur Ing RESIGNED | Director | 05 Mar 2010 | 03 Oct 2013 | Scotland | December 1961 | Millstream, Maidenhead Road, Windsor, Berkshire, SL4 5GD |
| HSE DIRECTORS LIMITED RESIGNED | Director | 16 Mar 2001 | 01 Jun 2001 | | | 7 Devonshire Square, Cutlers Gardens, London, EC2M 4YH, England |