UK Parliamentarians
- Ms Tasmina Ahmed-SheikhScottish National PartyMP for Ochil and South PerthshireMP since 2015
- Nickie AikenConservativeMP for Cities of London and WestminsterMP since 2019
- The Marquess of AilesburyCrossbenchMember of the House of LordsPeer since 1974
- The Marquess of AilsaConservativeMember of the House of LordsPeer since 1994
- Lord AilwynConservativeMember of the House of LordsPeer since 1976
- Nick AingerLabourMP for Carmarthen West and South PembrokeshireMP since 1992
- Mr Bob AinsworthLabourMP for Coventry North EastMP since 1992
- Mr Peter AinsworthConservativeMP for East SurreyMP since 1992
- Lord AiredaleLiberal DemocratMember of the House of LordsPeer since 1958
- Baroness Airey of AbingdonConservativeMember of the House of LordsPeer since 1979
- The Earl of AirlieCrossbenchMember of the House of LordsPeer since 1968
- Jonathan AitkenConservativeMP for South ThanetMP since 1974
- Luke AkehurstLabourMP for North DurhamMP since 2024
- Sadik Al-HassanLabourMP for North SomersetMP since 2024
- Mr Bayo AlabaLabourMP for Southend East and RochfordMP since 2024
- Viscount AlanbrookeCrossbenchMember of the House of LordsPeer since 1972
- Earl of AlbemarleCrossbenchMember of the House of LordsPeer since 1979
- Lord AldenhamNot knownMember of the House of LordsPeer since 1969
- Lord AldenhamConservativeMember of the House of LordsPeer since 1986
- Lord AlderdiceLiberal DemocratMember of the House of LordsPeer since 1996
- The Lord AldingtonConservativeMember of the House of LordsPeer since 1962
- Peter AldousConservativeMP for WaveneyMP since 2010
- Dan AldridgeLabourMP for Weston-super-MareMP since 2024
- Baroness Alexander of ClevedenLabourMember of the House of LordsPeer since 2025
- Lord Alexander of PotterhillCrossbenchMember of the House of LordsPeer since 1974
- Earl Alexander of TunisConservativeMember of the House of LordsPeer since 1969
- Lord Alexander of WeedonConservativeMember of the House of LordsPeer since 1988
- Danny AlexanderLiberal DemocratMP for Inverness, Nairn, Badenoch and StrathspeyMP since 2005
- Heidi AlexanderLabourMP for Swindon SouthMP since 2024
- Mr Douglas AlexanderLabourMP for Lothian EastMP since 2024
- Richard AlexanderConservativeMP for NewarkMP since 1979
- Rushanara AliLabourMP for Bethnal Green and StepneyMP since 2010
Source: parliament.uk · 1,424 currently sitting · Open Government Licence v3.0