| INFRASTRUCTURE MANAGERS LIMITED ACTIVE | Secretary | 27 Aug 2009 | | | | 8th Floor, 6 Kean Street, London, WC2B 4AS, United Kingdom |
| BOND, Josh Callum ACTIVE | Director | 22 Aug 2024 | | United Kingdom | May 1991 | Infrastructure Managers Limited, 2nd Floor Drum Suite, Saltire Court, 20 Castle Terrace, Edinburgh, EH1 2EN, United Kingdom |
| CAVILL, John Ivor ACTIVE | Director | 05 Apr 2012 | | United Kingdom | October 1972 | 8th Floor, 6 Kean Street, London, WC2B 4AS, United Kingdom |
| BOWN, Nicholas George RESIGNED | Secretary | 20 Jul 2000 | 27 Aug 2009 | | | Sky End House, Sky End Lane Hordle, Lymington, Hampshire, SO41 0HG |
| D.W. COMPANY SERVICES LIMITED RESIGNED | Nominee Secretary | 21 Dec 1999 | 20 Jul 2000 | | | 4th Floor, Saltire Court, 20 Castle Terrace, Edinburgh, Lothian, EH1 2EN |
| ACUTT, Bryan Michael RESIGNED | Director | 26 Sep 2016 | 01 Apr 2024 | United Kingdom | October 1979 | 16, Palace Street, London, SW1E 5JD, United Kingdom |
| BARR, William James RESIGNED | Director | 20 Apr 2000 | 23 May 2003 | Scotland | March 1939 | Harkieston, Maybole, Ayrshire, KA19 7LP |
| BOWN, Nicholas George RESIGNED | Director | 20 Jul 2000 | 01 Oct 2009 | United Kingdom | April 1945 | Sky End House, Sky End Lane Hordle, Lymington, Hampshire, SO41 0HG |
| CHALMERS, John Barclay RESIGNED | Director | 20 Jul 2000 | 31 Mar 2005 | | April 1950 | Westercraig, 14 Colinhill Road, Strathaven, ML10 6EU |
| CHAPLIN, Robert Henry Moffett RESIGNED | Director | 20 Jul 2000 | 28 Feb 2002 | United Kingdom | April 1963 | 23 Moray Place, Edinburgh, Lothian, EH3 6DA |
| CLARKE, Laurence Seymour RESIGNED | Director | 19 Mar 2009 | 05 Apr 2012 | England | June 1972 | Barclays Bank Plc, 1, Churchill Place, London, E14 5HP |
| CRAWFORD, Douglas James RESIGNED | Nominee Director | 21 Dec 1999 | 20 Jul 2000 | | February 1965 | 37 The Steils, Edinburgh, EH10 5XD |
| DAKPOE, Prince Yao RESIGNED | Director | 01 Apr 2024 | 22 Aug 2024 | United Kingdom | December 1979 | Infrastructure Managers Limited, 2nd Floor Drum Suite, Saltire Court, 20 Castle Terrace, Edinburgh, EH1 2EN, United Kingdom |
| FINDLAY, Michael James RESIGNED | Director | 27 Feb 2002 | 23 Jul 2004 | | January 1970 | 22 Braehead Crescent, Edinburgh, EH4 6BP |
| GEDDES, Andrew George RESIGNED | Director | 20 Jul 2000 | 09 Nov 2001 | | March 1948 | Bransford House, 21 Beechnut Lane, Solihull, West Midlands, B91 2NN |
| JESSOP, Alan Dixon RESIGNED | Director | 27 Feb 2002 | 23 Jul 2004 | | September 1955 | 73 Cricketers Lane, Brentwood, Essex, CM13 3QB |
| JESSOP, Alan Dixon RESIGNED | Director | 21 Jul 2000 | 01 Jun 2001 | | September 1955 | 73 Cricketers Lane, Brentwood, Essex, CM13 3QB |
| MACDONALD, Ronald Sutherland RESIGNED | Director | 23 May 2003 | 31 Mar 2005 | United Kingdom | June 1951 | 135 Stewarton Drive, Cambuslang, G72 8DH |
| MCDONAGH, John RESIGNED | Director | 13 Mar 2006 | 19 Mar 2009 | | December 1969 | 30 St Botolph's Road, Sevenoaks, Kent, TN13 3AG |
| MIDDLETON, Nigel Wythen RESIGNED | Director | 23 Sep 2004 | 13 Mar 2006 | United Kingdom | November 1956 | The Cottage, 198 High Molewood, Hertford, SG14 2PJ |
| PHILIPSZ, Joseph Eugene RESIGNED | Director | 20 Jul 2000 | 28 Feb 2002 | United Kingdom | December 1967 | 3 Blinkbonny Grove, Edinburgh, Midlothian, EH4 3HH |
| POLSON, Michael Buchanan RESIGNED | Director | 21 Dec 1999 | 20 Jul 2000 | | July 1964 | 11 Craighall Gardens, Edinburgh, EH6 4RH |
| RYAN, Michael Joseph RESIGNED | Director | 27 Feb 2002 | 19 Mar 2009 | United Kingdom | April 1966 | Apartment 42,, Central Building, 3 Matthew Parker Street, London, SW1H 9NE |
| RYAN, Michael Joseph RESIGNED | Director | 21 Jul 2000 | 01 Jun 2001 | United Kingdom | April 1966 | Apartment 42,, Central Building, 3 Matthew Parker Street, London, SW1H 9NE |
| SCOTT-BARRETT, Nicholas Huson RESIGNED | Director | 23 Sep 2004 | 13 Mar 2006 | | July 1950 | Gatehouse Farm, Crown Lane, Ardleigh, Colchester, CO7 7QZ |
| BIIF CORPORATE SERVICES LIMITED RESIGNED | Director | 31 Mar 2009 | 26 Sep 2016 | | | Cannon Place, 78 Cannon Street, London, EC4N 6AF, United Kingdom |