UK Parliamentarians
- Sir Adam ButlerConservativeMP for BosworthMP since 1970
- Baroness Butler-SlossCrossbenchMember of the House of LordsPeer since 2006
- Lord ButterfieldConservativeMember of the House of LordsPeer since 1988
- Sir John ButterfillConservativeMP for Bournemouth WestMP since 1983
- Lord ButterworthConservativeMember of the House of LordsPeer since 1985
- Lord Buxton of AlsaConservativeMember of the House of LordsPeer since 1978
- Ronald BuxtonConservativeMP for LeytonMP since 1965
- Mr Stephen ByersIndependentMP for North TynesideMP since 1992
- Baroness ByfordConservativeMember of the House of LordsPeer since 1996
- Dan BylesConservativeMP for North WarwickshireMP since 2010
- Ian ByrneLabourMP for Liverpool West DerbyMP since 2019
- Liam ByrneLabourMP for Birmingham Hodge Hill and Solihull NorthMP since 2004
- Lord ByronConservativeMember of the House of LordsPeer since 1983
- Lord ByronConservativeMember of the House of LordsPeer since 1989
- Sir Vince CableLiberal DemocratMP for TwickenhamMP since 2017
- Mr Richard CabornLabourMP for Sheffield CentralMP since 1983
- Lord CacciaCrossbenchMember of the House of LordsPeer since 1965
- Jocelyn CadburyConservativeMP for Birmingham, NorthfieldMP since 1979
- Ruth CadburyLabourMP for Brentford and IsleworthMP since 2015
- Lord CadmanConservativeMember of the House of LordsPeer since 1966
- Earl of CadoganConservativeMember of the House of LordsPeer since 1997
- Earl of CadoganOtherMember of the House of LordsPeer since 1933
- Baroness Caine of Kentish TownLabourMember of the House of LordsPeer since 2025
- Lord CaineConservativeMember of the House of LordsPeer since 2016
- Alun CairnsConservativeMP for Vale of GlamorganMP since 2010
- David CairnsLabourMP for InverclydeMP since 2001
- Earl of CairnsCrossbenchMember of the House of LordsPeer since 1989
- Earl of CairnsConservativeMember of the House of LordsPeer since 1946
- The Earl of CaithnessConservativeMember of the House of LordsPeer since 1969
- Viscount CaldecoteConservativeMember of the House of LordsPeer since 1947
- Viscount CaldecoteConservativeMember of the House of LordsPeer since 1999
- Nesil CaliskanLabourMP for BarkingMP since 2024
Source: parliament.uk · 1,424 currently sitting · Open Government Licence v3.0