| ELLIFFE, Amanda Jane ACTIVE | Director | 27 Mar 2015 | | Ireland | February 1976 | P3 East Point Business Park, Fairview, Dublin, Ireland |
| KING, Blake ACTIVE | Director | 19 May 2020 | | United States | February 1964 | Cadence Design Systems Inc, 2655 Seely Avenue, San Jose 95134, California, United States |
| OZAWA, Dean ACTIVE | Director | 19 May 2020 | | United States | May 1964 | Cadence Design Systems Inc, 2655 Seely Avenue, 95134, San Jose, California, United States |
| CARTWRIGHT, Martin Andrew RESIGNED | Secretary | 23 Sep 1992 | 19 Sep 1996 | | | 57 Woodhead Drive, Cambridge, Cambridgeshire, CB4 1YY |
| HAIR, Victoria Lee RESIGNED | Secretary | 20 Jul 2009 | 31 Dec 2012 | | | 73, Sutton Court Fauconberg Rd, Chiswick, London, W4 3JF |
| PAGE, Nicholas John RESIGNED | Secretary | | 30 Sep 1991 | | | Town Quay House, 7 Town Quay, Southampton, SO14 2PT |
| PAHLJINA, Christopher Joseph RESIGNED | Secretary | 29 Nov 1999 | 20 Jul 2009 | | | 19, St Mary's Grove, Chiswick, London, W4 3LL |
| PEILE, John Robin Kitchener RESIGNED | Secretary | 05 Dec 1991 | 23 Sep 1992 | | | 43 Brook Street, London, W1Y 2BL |
| ROBICHAUX, Floyd Joseph RESIGNED | Secretary | 03 Sep 1991 | 05 Dec 1991 | | | 43 Brook Street, London, W1Y 2BL |
| STAPLEY, Marc Andrew RESIGNED | Secretary | 19 Sep 1996 | 29 Nov 1999 | | | 6 Wilstrode Avenue, Binfield, Berkshire, RG42 4UW |
| BINGHAM, Heber Raymond RESIGNED | Director | 01 Nov 1993 | 06 Jan 2005 | | October 1945 | 555 River Oaks Parkway, San Jose, California, 95134, U S A |
| BUSHBY, Kevin RESIGNED | Director | 21 Dec 1995 | 15 Feb 2002 | | May 1955 | Minstrels Hockering Road, Woking, Surrey, GU22 7HJ |
| CARTWRIGHT, Martin Andrew RESIGNED | Director | 23 Sep 1992 | 19 Sep 1996 | | May 1951 | 57 Woodhead Drive, Cambridge, Cambridgeshire, CB4 1YY |
| COSTELLO, Joseph Ball RESIGNED | Director | | 19 Oct 1997 | | December 1953 | 55 Stadler Drive, Woodside, California 94062, FOREIGN, Usa |
| COWIE, James Judson RESIGNED | Director | 29 Aug 2008 | 19 May 2020 | United States | June 1964 | 189 El Dorado Avenue, Palo Alto, California, Ca 94306, United States |
| D'EYSSAUTIER, Guillaume RESIGNED | Director | 01 Aug 2002 | 25 Feb 2005 | | April 1950 | 8 Larpent Avenue, London, SW15 6UP |
| FERNANDEZ, Mervyn Cajetan RESIGNED | Director | 14 Feb 2002 | 28 Feb 2003 | England | December 1956 | 1 Henwick Close, Ashmore Green Road, Thatcham, Berkshire, RG18 9EW |
| HAIR, Victoria Lee RESIGNED | Director | 20 Jul 2009 | 31 Dec 2012 | England | September 1973 | 73, Sutton Court Fauconberg Rd, Chiswick, London, W4 3JF |
| HARVERSON, Peter George RESIGNED | Director | 23 Sep 1992 | 14 Feb 1994 | United Kingdom | March 1946 | Bourne House, Ogbourne St George, Marlborough, Wiltshire, SN8 1TF |
| HELLER, Peter John RESIGNED | Director | | 02 Mar 1993 | | February 1951 | 18 St Giles Road, Bredon, Tewkesbury, Gloucestershire, GL20 7EQ |
| KELLY, Thomas Francis RESIGNED | Director | 28 Dec 1992 | 30 Sep 1993 | | December 1952 | 850 Monte Rosa Drive, Menlo Park, California 94025, FOREIGN, Usa |
| LEBLANC, Leonard Joseph RESIGNED | Director | | 28 Dec 1992 | | February 1941 | 555 Riveroaks Parkway, San Jose, California, FOREIGN, Usa |
| MCKEITHEN, Robert Lee Smith RESIGNED | Director | 16 Mar 1998 | 29 Aug 2008 | | February 1944 | 11 Maple Leaf Way, Atherton Ca 94027, California, Usa, FOREIGN |
| NICHOL, Dominic Paul RESIGNED | Director | | 23 Sep 1992 | England | August 1947 | Fairview 5 Gravel Hill, Uxbridge, Middlesex, UB8 1PB |
| NORTHWOOD, Michael Alan RESIGNED | Director | | 23 Sep 1992 | | July 1936 | Saratoga, Old Long Grove, Seer Green, Buckinghamshire, HP9 2QH |
| PAHLJINA, Christopher Joseph RESIGNED | Director | 28 Feb 2005 | 20 Jul 2009 | | September 1961 | 19, St Mary's Grove, Chiswick, London, W4 3LL |
| PALTNIK, Kevin Scott RESIGNED | Director | 29 Aug 2008 | 01 Nov 2010 | Usa | November 1957 | 6054 Foothill Glen Drive, San Jose, California 95123 |
| PORTER, William RESIGNED | Director | 06 Jan 2005 | 29 Aug 2008 | | June 1954 | Cherrywood Drive 1424, San Mateo, California 94403, Usa |
| RADIA, Suresh Rugnath RESIGNED | Director | 29 Sep 2005 | 28 Feb 2007 | United Kingdom | September 1948 | The Laurels, Sheerwater Avenue, Woodham, Surrey, KT15 3DP |
| RIBAR, Geoffrey George, Mr. RESIGNED | Director | 16 Dec 2010 | 01 Oct 2017 | United States | September 1958 | L'Avenir, Bagshot Road, Bracknell, Berkshire, RG12 0PH, United Kingdom |
| SEGEV, Sharon RESIGNED | Director | 18 Dec 2010 | 21 Nov 2011 | United States | August 1972 | Lavenir, Bagshot Road, Bracknell, Berkshire, RG12 0PH, United Kingdom |
| TALBOT, Paul John RESIGNED | Director | 28 Feb 2003 | 31 Aug 2005 | | October 1963 | Ridgeview Windgates, Bray, County Wicklow, Ireland |
| WALL, John Michael RESIGNED | Director | 12 Mar 2007 | 19 May 2020 | United States | September 1970 | Maxis 1, Western Road, Bracknell, Berkshire, RG12 1RT |
| WHITE, Mark Robert RESIGNED | Director | 12 Feb 1997 | 16 Mar 1998 | | July 1958 | 29 Hogback Wood Road, Beaconsfield, Buckinghamshire, HP9 1JT |
| YATES, Ian Francis Penderel RESIGNED | Director | | 15 Apr 1996 | | January 1953 | Chestnut House Broadway Lane, Fladbury, Pershore, Worcestershire, WR10 2QG |