UK Parliamentarians
- The Duke of AthollNon-affiliatedMember of the House of LordsPeer since 1996
- Jas AthwalLabourMP for Ilford SouthMP since 2024
- Charlotte AtkinsLabourMP for Staffordshire MoorlandsMP since 1997
- Ronald AtkinsLabourMP for Preston NorthMP since 1974
- Sir Humphrey AtkinsConservativeMP for SpelthorneMP since 1955
- Sir Robert AtkinsConservativeMP for South RibbleMP since 1979
- Victoria AtkinsConservativeMP for Louth and HorncastleMP since 2015
- Catherine AtkinsonLabourMP for Derby NorthMP since 2024
- Lewis AtkinsonLabourMP for Sunderland CentralMP since 2024
- Mr David AtkinsonConservativeMP for Bournemouth EastMP since 1977
- Mr Peter AtkinsonConservativeMP for HexhamMP since 1992
- Norman AtkinsonLabourMP for TottenhamMP since 1964
- Lord AttenboroughNon-affiliatedMember of the House of LordsPeer since 1993
- Earl AttleeConservativeMember of the House of LordsPeer since 1992
- Earl AttleeSocial Democratic PartyMember of the House of LordsPeer since 1967
- Lord AucklandNot knownMember of the House of LordsPeer since 1957
- Lord AucklandNon-affiliatedMember of the House of LordsPeer since 1997
- Lord AudleyOtherMember of the House of LordsPeer since 1973
- Lord Austin of DudleyNon-affiliatedMember of the House of LordsPeer since 2020
- John AustinLabourMP for Erith and ThamesmeadMP since 1992
- Lord AveburyLiberal DemocratMember of the House of LordsPeer since 1971
- Earl of AylesfordOtherMember of the House of LordsPeer since 1958
- Lord AylestoneLiberal DemocratMember of the House of LordsPeer since 1967
- Josh BabarindeLiberal DemocratMP for EastbourneMP since 2024
- Lord BabuduLabourMember of the House of LordsPeer since 2026
- Lord BachLabourMember of the House of LordsPeer since 1998
- Baroness BaconLabourMember of the House of LordsPeer since 1970
- Gareth BaconConservativeMP for OrpingtonMP since 2019
- Mr Richard BaconConservativeMP for South NorfolkMP since 2001
- Lord Baden-PowellOtherMember of the House of LordsPeer since 1962
- Mrs Kemi BadenochConservativeMP for North West EssexMP since 2017
- Gordon BagierLabourMP for Sunderland SouthMP since 1964
Source: parliament.uk · 1,424 currently sitting · Open Government Licence v3.0