UK Parliamentarians
- Lord AmpthillCrossbenchMember of the House of LordsPeer since 1976
- Lord AmwellCrossbenchMember of the House of LordsPeer since 1990
- Lord AmwellNot knownMember of the House of LordsPeer since 1966
- Lord Anderson of IpswichCrossbenchMember of the House of LordsPeer since 2018
- Baroness Anderson of Stoke-on-TrentLabourMember of the House of LordsPeer since 2022
- Lord Anderson of SwanseaLabourMember of the House of LordsPeer since 2005
- Callum AndersonLabourMP for Buckingham and BletchleyMP since 2024
- Fleur AndersonLabourMP for PutneyMP since 2019
- Janet AndersonLabourMP for Rossendale and DarwenMP since 1992
- Lee AndersonReform UKMP for AshfieldMP since 2019
- Mr David AndersonLabourMP for BlaydonMP since 2005
- Stuart AndersonConservativeMP for South ShropshireMP since 2019
- Stuart AndrewConservativeMP for DaventryMP since 2010
- Baroness AndrewsLabourMember of the House of LordsPeer since 2000
- Baroness Anelay of St JohnsConservativeMember of the House of LordsPeer since 1996
- The Marquess of AngleseyCrossbenchMember of the House of LordsPeer since 1947
- Lord AnnalyConservativeMember of the House of LordsPeer since 1990
- Lord AnnanCrossbenchMember of the House of LordsPeer since 1965
- Earl of Annandale and HartfellConservativeMember of the House of LordsPeer since 1986
- Caroline AnsellConservativeMP for EastbourneMP since 2019
- Tonia AntoniazziLabourMP for GowerMP since 2017
- Baroness AntrobusLabourMember of the House of LordsPeer since 2026
- Steff AquaroneLiberal DemocratMP for North NorfolkMP since 2024
- Lord Arbuthnot of EdromConservativeMember of the House of LordsPeer since 2015
- Viscount ArbuthnottCrossbenchMember of the House of LordsPeer since 1966
- Lord Archer of SandwellLabourMember of the House of LordsPeer since 1992
- Lord Archer of Weston-Super-MareNon-affiliatedMember of the House of LordsPeer since 1992
- Lord ArdwickLabourMember of the House of LordsPeer since 1970
- Edward ArgarConservativeMP for Melton and SystonMP since 2015
- Duke of ArgyllConservativeMember of the House of LordsPeer since 1973
- Richard ArklessScottish National PartyMP for Dumfries and GallowayMP since 2015
- Baroness ArlingtonCrossbenchMember of the House of LordsPeer since 1999
Source: parliament.uk · 1,424 currently sitting · Open Government Licence v3.0