| SWAN, Colin Charles ACTIVE | Secretary | 07 Jul 2023 | | | | Inveralmond House, 200 Dunkeld Road, Perth, PH1 3AQ, Scotland |
| BEATTIE, Martin ACTIVE | Director | 11 Nov 2019 | | Scotland | March 1981 | Grampian House, 200 Dunkeld Road, Perth, PH1 3GH, Scotland |
| CRYANS, Charles ACTIVE | Director | 18 Jan 2022 | | United Kingdom | June 1963 | 1, Waterloo Street, Glasgow, G2 6AY, United Kingdom |
| DE AZEVEDO DENT, Kelly ACTIVE | Director | 04 Nov 2025 | | England | December 1971 | Inveralmond House, 200 Dunkeld Road, Perth, PH1 3AQ, Scotland |
| HAYWARD, Mark Richard ACTIVE | Director | 29 Mar 2013 | | United Kingdom | November 1963 | Fiddler's Ferry Power Station, Widnes Road, Cuerdley, Warrington, WA5 2UT, United Kingdom |
| MACKAY, Mandy ACTIVE | Director | 17 May 2022 | | United Kingdom | January 1976 | Grampian House, 200 Dunkeld Road, Perth, PH1 3GH, Scotland |
| MCCUTCHEON, Finlay Alexander ACTIVE | Director | 06 Jul 2024 | | Scotland | November 1977 | Inveralmond House, 200 Dunkeld Road, Perth, PH1 3AQ, Scotland |
| RUDD, Adrian Marc James ACTIVE | Director | 11 Nov 2019 | | England | May 1971 | Fiddlers Ferry Power Station, Widnes Road, Warrington, WA5 2UT, United Kingdom |
| DONNELLY, Lawrence John Vincent RESIGNED | Secretary | 17 Jun 1997 | 01 Dec 2014 | | | Inveralmond House, 200 Dunkeld Road, Perth, PH1 3AQ |
| DONNELLY, Lawrence John Vincent RESIGNED | Secretary | 02 Oct 1992 | 01 Apr 1993 | | | 31 Hillpark Way, Blackhall, Edinburgh, Midlothian, EH4 7ST |
| DUFTY, Kevan RESIGNED | Secretary | 01 Apr 1993 | 25 Jan 1995 | | | 29 The Green Hawk Green, Stockport, Cheshire, SK6 7HT |
| FAIRBAIRN, Sally RESIGNED | Secretary | 01 Dec 2014 | 07 Jul 2023 | | | Inveralmond House, 200 Dunkeld Road, Perth, PH1 3AQ, Scotland |
| FRIED, Kate RESIGNED | Secretary | 27 Aug 1992 | 02 Oct 1992 | | | 5 Vernon Mansions, London, W14 9TQ |
| HASTINGS, David Gillespie RESIGNED | Secretary | 01 Apr 1996 | 31 May 1997 | | | 25 The Meadows, Messingham, Scunthorpe, South Humberside, DN17 3UD |
| NEWSOME, Michael John RESIGNED | Secretary | 25 Jan 1995 | 01 Apr 1996 | | | 10 Athol Road, Bramhall, Stockport, Cheshire, SK7 1BS |
| NORTON ROSE LIMITED RESIGNED | Nominee Secretary | 08 Jul 1992 | 27 Aug 1992 | | | Kempson House, P.O. Box 570, Camomile Street, London, EC3A 7AN |
| ADAMS, Christopher George RESIGNED | Director | 24 Jun 1993 | 27 Jun 1996 | England | March 1950 | 72 Westgate, Hale, Altrincham, Cheshire, WA15 9BB |
| ALEXANDER, Fraser Mcgregor RESIGNED | Director | 14 Oct 2002 | 29 Sep 2004 | United Kingdom | April 1963 | Green Yetts, Doune Road, Dunblane, Perthshire, FK15 9HR |
| BRONWIN, Hannah Zoe RESIGNED | Director | 17 May 2022 | 31 Jan 2025 | England | September 1983 | Inveralmond House, 200 Dunkeld Road, Perth, PH1 3AQ, Scotland |
| BRYDON, Antony Gavin Dominic, Dr RESIGNED | Director | 29 Sep 2004 | 02 Mar 2010 | Scotland | October 1967 | Inveralmond House, 200 Dunkeld Road, Perth, PH1 3AQ |
| CRYANS, Charles RESIGNED | Director | 11 Nov 2019 | 24 Jun 2021 | United Kingdom | June 1963 | 1, Waterloo Street, Glasgow, G2 6AY, United Kingdom |
| EASTABROOK, Barbara Kay RESIGNED | Director | 02 Oct 1992 | 24 Jun 1993 | | May 1957 | 82 St Werburghs Road, Chorlton Cum Hardy, Manchester, M21 0UL |
| FAULKNER, Malcolm George RESIGNED | Director | 02 Oct 1992 | 27 Mar 1997 | United Kingdom | August 1944 | 14 Sudbury Drive, Lostock, Bolton, Lancashire, BL6 4PP |
| FRIED, Kate RESIGNED | Director | 27 Aug 1992 | 02 Oct 1992 | | February 1965 | 5 Vernon Mansions, London, W14 9TQ |
| GILLATT, Michael RESIGNED | Director | 11 Nov 2019 | 16 Dec 2020 | United Kingdom | December 1971 | Sse Gas Storage, Garton Road, Hull, HU11 4QB, United Kingdom |
| GOLDSWORTHY, Peter RESIGNED | Director | 02 Oct 1959 | 27 Mar 1997 | | December 1942 | Quinque 5 Brookside, Euxton, Chorley, Lancashire, PR7 6HR |
| GRAY, Ann Miriam Georgina RESIGNED | Director | 11 Nov 2019 | 17 Apr 2025 | Scotland | April 1967 | Inveralmond House, 200 Dunkeld Road, Perth, PH1 3AQ, Scotland |
| GRAY, David Mclaren RESIGNED | Director | 30 Jul 1998 | 08 Oct 1999 | Scotland | November 1951 | Dykeneuk, Butterstone, Dunkeld, Perthshire, PH8 0HA |
| JOHNSON, John RESIGNED | Director | 11 Nov 2019 | 06 Jan 2026 | Ireland | November 1976 | Red Oak South, South County Business Park, Leopardstown, Dublin, 18, Ireland |
| MARCHANT, Ian Derek RESIGNED | Director | 08 Oct 1999 | 14 Oct 2002 | United Kingdom | February 1961 | 45 Craigcrook Road, Edinburgh, Midlothian, EH4 3PH |
| MARTIN, James Henry RESIGNED | Director | 15 Sep 1996 | 02 Oct 2001 | | September 1953 | Burn Brae House, East Dron , Bridge Of Earn, Perth, Perthshire, PH2 9HG |
| RAW, Catherine RESIGNED | Director | 07 Jul 2022 | 04 Apr 2024 | England | June 1981 | Sse, 111, Buckingham Palace Road, London, SW1W 0SR, England |
| READ, Arnold Wadkin, Dr RESIGNED | Director | 19 Feb 1993 | 07 Nov 1997 | | October 1937 | 8 Gillespie Road, Edinburgh, Lothian, EH13 0LL |
| RENNET, Brandon James RESIGNED | Director | 02 Mar 2010 | 13 Mar 2013 | United Kingdom | November 1972 | Inveralmond House 200, Dunkeld Road, Perth, Perthshire, PH1 3AQ |
| SIGSWORTH, David, Prof. RESIGNED | Director | 07 Nov 1994 | 31 Mar 2005 | United Kingdom | July 1946 | 9 Station Road, South Queensferry, West Lothian, EH30 9HY |
| SIGSWORTH, David, Prof. RESIGNED | Director | 02 Oct 1992 | 19 Feb 1993 | United Kingdom | July 1946 | 9 Station Road, South Queensferry, West Lothian, EH30 9HY |
| SMITH, James Isaac RESIGNED | Director | 06 Jul 2016 | 11 Nov 2019 | Scotland | March 1962 | Inveralmond House, 200 Dunkeld Road, Perth, PH1 3AQ, Scotland |
| SMITH, Paul Richard RESIGNED | Director | 15 Apr 2005 | 31 May 2016 | United Kingdom | January 1963 | Grampian House, 200 Dunkeld Road, Perth, PH1 3GH |
| TAYLOR, Catherine Jane RESIGNED | Director | 27 Aug 1992 | 02 Jun 1992 | | March 1968 | 9 Huntingdon Street, London, N1 1BU |
| WHEELER, Stephen RESIGNED | Director | 11 Nov 2019 | 16 Dec 2021 | Ireland | February 1973 | Red Oak South, South County Business Park, Leopardstown, Dublin, 18, Ireland |
| WILMAN, Graham RESIGNED | Director | 31 Jul 1996 | 27 Mar 1997 | | June 1961 | 20 Sanderling Close, Westhoughton, Bolton, Lancashire, BL5 2SP |
| YOUNG, Alan Moffat RESIGNED | Director | 02 Oct 1992 | 31 Oct 1994 | Scotland | July 1937 | 46 Allan Road, Killearn, Glasgow, Lanarkshire, G63 9QE |
| YOUNG, Arnold Roger Alexander RESIGNED | Director | 02 Oct 1992 | 15 Sep 1996 | | January 1944 | Lossiehall, Liff, Dundee, DD2 5NJ |
| ZAKIR, Zahida RESIGNED | Director | 22 Jun 2021 | 11 Nov 2025 | England | October 1969 | Inveralmond House, 200 Dunkeld Road, Perth, PH1 3AQ, Scotland |
| NOROSE LIMITED RESIGNED | Nominee Director | 08 Jul 1992 | 27 Aug 1992 | | | Kempson House, P.O. Box 570, Camomile Street, London, EC3A 7AN |
| NORTON ROSE LIMITED RESIGNED | Nominee Director | 08 Jul 1992 | 27 Aug 1992 | | | Kempson House, P.O. Box 570, Camomile Street, London, EC3A 7AN |