UK Parliamentarians
- Baroness Armstrong of Hill TopLabourMember of the House of LordsPeer since 2010
- Lord Armstrong of IlminsterCrossbenchMember of the House of LordsPeer since 1988
- Ernest ArmstrongLabourMP for North West DurhamMP since 1964
- Hilary ArmstrongLabourMP for North West DurhamMP since 1987
- Lord ArmstrongConservativeMember of the House of LordsPeer since 1972
- Mr Jacques ArnoldConservativeMP for GraveshamMP since 1987
- Sir Thomas ArnoldConservativeMP for Hazel GroveMP since 1974
- The Earl of ArranConservativeMember of the House of LordsPeer since 1983
- Dr Scott ArthurLabourMP for Edinburgh South WestMP since 2024
- Jess AsatoLabourMP for LowestoftMP since 2024
- Lord AshbourneConservativeMember of the House of LordsPeer since 1983
- Lord AshburtonCrossbenchMember of the House of LordsPeer since 1991
- Lord AshburtonOtherMember of the House of LordsPeer since 1938
- David AshbyConservativeMP for North West LeicestershireMP since 1983
- Lord AshbyOtherMember of the House of LordsPeer since 1973
- Lord AshcombeConservativeMember of the House of LordsPeer since 2022
- Lord AshcombeConservativeMember of the House of LordsPeer since 1962
- Lord AshcroftConservativeMember of the House of LordsPeer since 2000
- Lord Ashdown of Norton-sub-HamdonLiberal DemocratMember of the House of LordsPeer since 2001
- Lord Ashley of StokeLabourMember of the House of LordsPeer since 1992
- Lord Ashton of HydeCrossbenchMember of the House of LordsPeer since 2011
- Lord Ashton of HydeCrossbenchMember of the House of LordsPeer since 1983
- Baroness Ashton of UphollandLabourMember of the House of LordsPeer since 1999
- Mr Joe AshtonLabourMP for BassetlawMP since 1968
- Jonathan AshworthLabourMP for Leicester SouthMP since 2011
- Jack AspinwallConservativeMP for WansdykeMP since 1979
- James AsserLabourMP for West Ham and BecktonMP since 2024
- Lord Astor of HeverConservativeMember of the House of LordsPeer since 1986
- Viscount AstorConservativeMember of the House of LordsPeer since 1973
- Ms Candy AthertonLabourMP for Falmouth and CamborneMP since 1997
- Sarah AthertonConservativeMP for WrexhamMP since 2019
- Duke of AthollConservativeMember of the House of LordsPeer since 1957
Source: parliament.uk · 1,424 currently sitting · Open Government Licence v3.0