| GREENSMITH, Michael Charles ACTIVE | Secretary | 31 Mar 1999 | | | | Blackway House, Stretton Grandison, Ledbury, Hereford, HR8 2UN |
| CHAVARRI, Jose-Maria ACTIVE | Director | 22 Jul 1997 | | Spain | March 1949 | Alday-6, 2d, Arrasate, Guipuzcoa, 20500, Spain |
| SANCHEZ VALOR, Galo ACTIVE | Director | 14 Nov 2002 | | Spain | November 1958 | C/ Santa Cruz No 21-40d, Aretxabaleta, Guipuzcoa 20550, Spain |
| STANBOULY, Souhel Hani ACTIVE | Director | 02 Jan 2007 | | Usa | August 1953 | 2537 Chanute Drive, Plano, Texas 75025, Usa |
| SINGLETERRY, Maria RESIGNED | Secretary | 23 Sep 1998 | 31 Mar 1999 | | | 34 Byron Road, Twyford, Berkshire, RG10 0AE |
| SINGLETERRY, Maria RESIGNED | Secretary | 09 Jun 1998 | 23 Sep 1998 | | | 34 Byron Road, Twyford, Berkshire, RG10 0AE |
| SMITH, Marie RESIGNED | Secretary | 23 Dec 1996 | 13 Nov 1997 | | | 10 Hatch Place, Kingston Upon Thames, Surrey, KT2 5NB |
| THOMAS, Luke RESIGNED | Secretary | 23 Sep 1998 | 17 Jan 1999 | | | 94 Watcombe Road, South Norwood, London, SE25 4UZ |
| THORPE, Elizabeth Anne RESIGNED | Secretary | 13 Nov 1997 | 23 Sep 1998 | | | 85 Silverdale Road, Earley, Reading, Berkshire, RG6 7NF |
| PINSENT MASONS SECRETARIAL LIMITED RESIGNED | Nominee Secretary | 02 May 1996 | 23 Dec 1996 | | | 41 Park Square, Leeds, LS1 2NS |
| BARRY, Paul RESIGNED | Director | 30 May 2008 | 10 Oct 2008 | | August 1965 | The Pinfold, Melton Road Hickling Pastures, Melton Mowbray, Leicestershire, LE14 3QG |
| BERGADA, Jose Maria Lopez RESIGNED | Director | 23 Dec 1996 | 05 Jun 2002 | | July 1951 | Pons I Arenes 6, Vilassar De Dalt, Barcelona, 08339, Spain |
| BROWN, Duncan George RESIGNED | Director | 10 Apr 2003 | 28 Nov 2003 | United Kingdom | April 1964 | 9 Faldo Drive, Melton Mowbray, Leicestershire, LE13 1RH |
| DANN, Royston George RESIGNED | Director | 23 Oct 2000 | 28 Feb 2003 | | September 1952 | 46-48 Narrow Lane, Hathern, Loughborough, Leicestershire, LE12 5LH |
| GREEN, Richard John RESIGNED | Director | 29 Jan 1999 | 31 Jul 2003 | | April 1952 | 1 Court Orchard, Working Lane Gretton, Cheltenham, Gloucestershire, GL54 5YU |
| GROVES, Paul, Doctor RESIGNED | Director | 26 Jan 1998 | 01 Feb 2001 | | June 1960 | 45 Highfields Drive, Loughborough, Leicestershire, LE11 3JS |
| HALE, Richard John RESIGNED | Director | 23 Dec 1996 | 25 Jan 2007 | | March 1947 | 3245 Monette Lane, Plano, Texas, 75025, U S A |
| HARRIS, Robert James RESIGNED | Director | 26 Jan 1998 | 31 Jan 2003 | | February 1949 | 71 Silhill Hall Road, Solihull, West Midlands, B91 1JT |
| MICHAELSON, Robert Bernard RESIGNED | Director | 21 May 1997 | 11 Dec 1998 | | November 1942 | 23 Assarts Road, Malvern Wells, Worcestershire, WR14 4HW |
| MOORE, Nigel Graham RESIGNED | Director | 26 Jan 1998 | 23 Oct 2000 | | August 1947 | 147 East Park Farm Drive, Charvil, Reading, Berkshire, RG10 9UQ |
| PROWSE, Arthur Mark Collins RESIGNED | Director | 10 Apr 2003 | 15 Mar 2005 | England | February 1964 | 4, Riverbank Gardens, Tiddington Road, Stratford On Avon, Warwickshire, CV37 7BW |
| SAHUN NUEZ, Jose RESIGNED | Director | 01 Feb 2005 | 28 Feb 2007 | | March 1943 | 168-102a Comte D'Urgell,, Barcelona, 08036, Spain |
| SANZ SAIZ, Jose Ignacio RESIGNED | Director | 26 Jan 1998 | 31 Dec 1999 | | May 1968 | Av Brasilia 29 5 A, Madrid 28028, Spain |
| SHRIEVE, Paul Francis RESIGNED | Director | 10 Oct 2008 | 30 Jul 2010 | United Kingdom | February 1964 | Gl Industrial Services Uk Limited, Holywell Park, Ashby Road, Loughborough, Leicestershire, LE11 3GR, England |
| SOTIL, Javier RESIGNED | Director | 23 Dec 1996 | 11 Dec 1998 | | July 1951 | Laxarteg 119 1, Lrgaxpi, Guipuzcoa, 20230, Spain |
| STROUD, Henry John Francis, Dr RESIGNED | Director | 23 Dec 1996 | 30 Mar 2001 | | August 1943 | 32 Haskell Close, Thorpe Astley, Braunstone, Leicester, Leicestershire, LE3 3UA |
| TISO, David Andrew RESIGNED | Director | 15 Mar 2005 | 30 May 2008 | England | July 1961 | 21 Reeve Drive, Kenilworth, Warwickshire, CV8 2GA |
| VALLE SAVAL, Fidel RESIGNED | Director | 26 Jan 1998 | 01 Feb 1998 | | August 1942 | C Balmes 203-3 2, Barcelona, Catalunya, 08006, Spain |
| VALLE SAVAL, Fidel RESIGNED | Director | 22 Jul 1997 | 01 Feb 2005 | | August 1942 | C Balmes 203-3 2, Barcelona, Catalunya, 08006, Spain |
| WINNINGTON, Terence, Doctor RESIGNED | Director | 23 Dec 1996 | 29 Jan 1999 | | December 1948 | Hillside House, Jacobs Knoll Burleigh, Stroud, Gloucestershire, GL5 2PR |
| ZABALA ITURRALDE, Mikel RESIGNED | Director | 11 Dec 1998 | 11 Oct 2002 | | October 1954 | C/Naguzia 86-4-D-Azkoitia, Azkoitia, Gipuzkoa, Spain |
| GAS NATURAL SDG.S.A RESIGNED | Director | 28 Feb 2007 | 04 Feb 2009 | | | 4 Plaza Del Gas No 1, Carcelona, Catalonia, 08003, Spain |
| PINSENT MASONS DIRECTOR LIMITED RESIGNED | Nominee Director | 02 May 1996 | 23 Dec 1996 | | | 41 Park Square, Leeds, LS1 2NS |