| GILBERT, Charles Scott ACTIVE | Director | 15 Aug 2019 | | United States | June 1966 | Campus Suites 2 & 3, Campus Reading International (Ribp), Basingstoke Road, Reading, Berkshire, RG2 6DA, England |
| KNOBLOCH, Michael ACTIVE | Director | 09 Oct 2015 | | Israel | August 1975 | 4 Ha'shizaf St, Ra'Anana, 4366411, Israel |
| THORN, Robin James ACTIVE | Director | 23 Sep 2016 | | England | October 1975 | Xura, Reading International Business Park, Part Spur Ag, Basingstoke Road, Reading, RG2 6DH, England |
| FRIEDMAN, Reuven RESIGNED | Secretary | 26 Jan 2006 | 14 Feb 2008 | | | 5 Hagefen Street, Karni Shomron, 44853, Israel |
| LURIA, Roy Shimon RESIGNED | Secretary | 22 Nov 2012 | 15 Aug 2019 | | | Xura Inc, 200 Quannapowitt Parkway, Wakefield, Massachusetts, 01880, United States |
| MUSGRAVE, Christopher Michael RESIGNED | Secretary | 28 Jun 1996 | 31 Dec 1997 | | | Grey Stones Butham Lane, Chew Magna, Bristol, Avon, BS18 8RQ |
| PARKER, Greg RESIGNED | Secretary | 15 Feb 1999 | 14 Aug 2000 | | | 1604 Serengeti Place, Littleton Co, Douglas, 80126, America |
| ROBINSON, Paul RESIGNED | Secretary | 09 Dec 2005 | 26 Jan 2006 | | | 28 Claremont Road, Scarsdale, New York 10583, Usa |
| RUBLE, Joseph Thomas RESIGNED | Secretary | 14 Aug 2000 | 09 Dec 2005 | | | 8378 Colonial Drive, Littleton, Colorado 80124, Usa |
| STOK, Richard Alistair RESIGNED | Secretary | 04 Dec 1997 | 15 Feb 1999 | | | 23 Bedfordshire Down, Warfield, Bracknell, Berkshire, RG42 3UA |
| TIDSALL, David Peter Charles RESIGNED | Secretary | | 28 Jun 1996 | | | 50 Anglesey Avenue, Cove, Farnborough, Hampshire, GU14 8SQ |
| WILLEY, Nicholas Arthur Jonathan RESIGNED | Secretary | 14 Feb 2008 | 31 Jan 2011 | | | Adelphi Building 7th Floor, 1-11 John Adam Street, London, WC2N 6HT |
| ABRAMSON, John Richard RESIGNED | Director | 14 Aug 2000 | 30 Jun 2001 | | May 1948 | 938 Aztec Drive, Castle Rock, Colorado 80104, Usa |
| BARRETT, John Flannigan RESIGNED | Director | 23 Dec 1993 | 30 Jun 1994 | | August 1941 | 55 Picton Way, Caversham, Reading, Berkshire, RG4 8NJ |
| BERNAERT, Denis RESIGNED | Director | 22 Nov 2012 | 09 Oct 2015 | France | May 1964 | Comverse, Tour Franklin, 100 Terr Asse Boieldieu, Paris La Defense & Cedex, Paris 92042, France |
| BRENNER, David RESIGNED | Director | 28 Jun 1996 | 04 Dec 1997 | | May 1944 | 6486 South Forest Street, Littleton, Colorado, Arapahoe, 80121, Usa |
| BURCH, Gary Charles RESIGNED | Director | 19 Feb 2002 | 31 May 2005 | United Kingdom | November 1953 | Malvern, Northfield Avenue Pinner, Harrow, Middlesex, HA5 1AL |
| CHMILEWSKY, Lionel RESIGNED | Director | 18 Apr 2011 | 24 Feb 2012 | France | October 1961 | Tour Franklin, 100 Terrasse Boildieu, Paris La Defense Cedex, 92042, France |
| EVELEIGH, Stuart RESIGNED | Director | 14 Feb 2008 | 31 Mar 2011 | United Kingdom | April 1957 | Broomfield Cottage, Broomfield Hill, Great Missenden, Buckinghamshire, HP16 9PD |
| FENDLEY, Larry RESIGNED | Director | 28 Jun 1996 | 15 Sep 1998 | | April 1941 | 925 Manciples Way, Abilene Texas, Taylor County, 79602, America |
| FRIEDMAN, Reuven RESIGNED | Director | 26 Jan 2006 | 14 Feb 2008 | | December 1957 | 5 Hagefen Street, Karni Shomron, 44853, Israel |
| GHIDALI, Adam Edward RESIGNED | Director | 08 Aug 1995 | 10 Oct 1995 | | November 1948 | Digital Equipment Corporation, 4709 Creekstone Drive Suite 2000, Morrisville, Nc27560, Usa |
| GILBERT, Charles Scott RESIGNED | Director | 15 Aug 2019 | 17 Sep 2019 | United States | June 1966 | Reading International Business Park, Part Spur Ag, Reading, RG2 6DH |
| GILLSTROM, Urban RESIGNED | Director | 03 Jul 2009 | 10 Nov 2009 | United Kingdom | January 1960 | Apartment No. 8, 4-7 Lombard Lane, London, EC4 8AD |
| GREEN, Neil Arthur RESIGNED | Director | | 22 Sep 1994 | | September 1955 | 1 Old Windmill Way, Long Crendon, Aylesbury, Buckinghamshire, HP18 9BQ |
| HEWITT, Janette Margaret RESIGNED | Director | | 23 Dec 1993 | England | September 1949 | Baughurst Road, Baughurst, Hampshire, RG26 5LP |
| JACOBSON, Kenneth RESIGNED | Director | 30 Jun 1994 | 20 Mar 1996 | | November 1951 | 3 Palmers Way, High Salvington, Worthing, West Sussex, BN13 3DP |
| KALAN, Peter Eric RESIGNED | Director | 30 Jun 2001 | 09 Dec 2005 | | October 1959 | 8341 East Otero Circle, Englewood, Co 80112, Usa |
| LANDMAN, Anton RESIGNED | Director | 14 Feb 2008 | 27 Aug 2010 | England | March 1974 | Woodlands Farm, Reigate Road, Hookwood, Horley, Surrey, RH6 0HH |
| LEGON, Joel Ellis RESIGNED | Director | 03 Jul 2009 | 31 Oct 2012 | Usa | October 1950 | 43, Chapin Road, Barrington, Ri 02806, United States |
| LEITMAN, Ziv RESIGNED | Director | 09 Dec 2005 | 25 Jun 2009 | | October 1957 | 58 Rabi Akiva Street, Herzelia, 46423, Israel |
| LURIA, Roy Shimon RESIGNED | Director | 22 Nov 2012 | 15 Aug 2019 | United States | September 1971 | Xura, Inc., 200 Quannapowitt Parkway, Wakefield, Massachusetts Ma 01880, United States |
| MATHERLY, Jason RESIGNED | Director | 15 Feb 1999 | 31 Dec 2000 | | August 1965 | 10 Random Road, Cherry Hill Village, Denver, Colorado, 80110, America |
| MCDERMOTT, Paul Kevin RESIGNED | Director | 09 Oct 2015 | 23 Sep 2016 | United States Of America | October 1961 | 200, Quannapowitt Parkway, Wakefield, Ma 01880, Usa |
| MCMICKING, Robert Neil Eyres RESIGNED | Director | 20 Mar 1996 | 28 Jun 1996 | | August 1945 | Linden Cottage, Kiln Green, Berkshire, RG10 9XP |
| MCPHERSON, Robert RESIGNED | Director | | 31 Dec 1993 | | December 1943 | The Old Coach House Bramley Road, Silchester, Reading, Berkshire, RG7 2LJ |
| MURRAY, Glen RESIGNED | Director | 23 Sep 2016 | 31 Mar 2017 | United Kingdom | May 1965 | Xura, Reading International Business Park, Basingstoke Road, Reading, RG2 6DH, England |
| MUSGRAVE, Christopher Michael RESIGNED | Director | 22 Dec 1994 | 31 Dec 1997 | | October 1942 | Grey Stones Butham Lane, Chew Magna, Bristol, Avon, BS18 8RQ |
| PARKER, Greg RESIGNED | Director | 15 Feb 1999 | 14 Aug 2000 | | March 1958 | 1604 Serengeti Place, Littleton Co, Douglas, 80126, America |
| POGGE, John(Jack) RESIGNED | Director | 04 Dec 1997 | 30 Jun 2001 | | June 1953 | 5834 South Paris Court, Englewood, Colorado, 80111, Usa |
| RATHJE, Shawn Christian RESIGNED | Director | 22 Nov 2012 | 09 Oct 2015 | Massachusetts Usa | January 1971 | Comverse Inc, 200 Quannapowitt Parkway, Wakefield, Massachusetts Ma 01880, Usa |
| RIERSON, Ronald RESIGNED | Director | 01 Jul 1992 | 02 Aug 1993 | | January 1944 | 3 Blenheim Gardens, Hook Heath Avenue, Woking, Surrey, GU22 0HL |
| ROBINSON, Paul RESIGNED | Director | 09 Dec 2005 | 26 Jan 2006 | | January 1967 | 28 Claremont Road, Scarsdale, New York 10583, Usa |
| RUBLE, Joseph Thomas RESIGNED | Director | 14 Aug 2000 | 09 Dec 2005 | | November 1960 | 8378 Colonial Drive, Littleton, Colorado 80124, Usa |
| SCHREIBER, Dan RESIGNED | Director | 14 Feb 2008 | 20 Oct 2008 | | March 1956 | 7 Azmon Street, Pardess Hanna, 37011, Israel |
| SHAH, Shefali Ashok RESIGNED | Director | 13 Jun 2011 | 31 Oct 2012 | Usa | August 1971 | 810 Seventh Avenue, 32nd Floor, New York, Ny 10019, Usa |
| SHONE, Michael Leslie RESIGNED | Director | 01 Feb 1994 | 28 Jun 1996 | | March 1941 | Birchwood, Lady Margaret Road Sunningdale, Ascot, Berkshire, SL5 9QH |
| STOK, Richard Alistair RESIGNED | Director | 04 Dec 1997 | 15 Feb 1999 | England | March 1952 | 23 Bedfordshire Down, Warfield, Bracknell, Berkshire, RG42 3UA |
| VERBER, Tamar RESIGNED | Director | 21 Oct 2008 | 25 Jun 2009 | | September 1972 | 38, Dvora Hanevia Street, Tel Aviv, 69350, Israel |
| WIEJAK, Jan Stephen RESIGNED | Director | | 12 May 1995 | | May 1957 | 4 The Maltings, West Ilsley, Newbury, Berkshire, RG20 7AX |
| WU, Jacky RESIGNED | Director | 09 Oct 2015 | 23 Sep 2016 | United States | March 1983 | 200 Quannapowitt Parkway, Wakefield, Ma 01880, Usa |
| ZACHARIAS-LANGHANS, Bernd Christian RESIGNED | Director | 27 Aug 2010 | 09 Oct 2015 | Germany | November 1966 | Comverse Germany Gmbh, Siemensstrasse 3, Neu-Isenburg 63263, Germany |