England
editMajor parties outside top three:
- Westminster Abbey by-election, 1924: Lib (4) - behind Constitutionalist
- Liverpool Wavertree by-election, 1935: Lib (4) - behind Ind Con
- Oldham West by-election, 1968: Lib (4) - behind All Party Alliance
- Southampton Itchen by-election, 1971: Lib (4) - behind National Democratic Party (UK)
- Newham South by-election, 1974: Con (4) - behind Nat Front
- Walsall North by-election, 1976: Lib (5) - behind Ind Sidney Wright and Nat Front
- Birmingham Stechford by-election, 1977: Lib (4) - behind Nat Front
- Birmingham Ladywood by-election, 1977: Lib (4) - behind Nat Front
- Lambeth Central by-election, 1978: Lib (4) - behind Nat Front
- Bermondsey by-election, 1983: Con (4) - behind Ind Lab
- Richmond by-election, 1989: Lab (4) - behind SDP(88)
- Liverpool Walton by-election, 1991: Con (4) - behind Ind Lab
- Hartlepool by-election, 2004: Con (4) - behind UKIP
- Bromley and Chislehurst by-election, 2006: Lab (4) - behind UKIP
- Henley by-election, 2008: Lab (5) - behind Green and BNP
- Barnsley Central by-election, 2011: LibDem (6) - behind UKIP, BNP and Ind Tony Devoy
Scotland and Wales
editMajor parties outside top four:
- Combined Scottish Universities by-election, 1946: Nat Lib (5) - behind Ind; stood against Con; no SNP
- Glasgow Camlachie by-election, 1948: Lib (6) - behind ILP and United Socialist Movement
- Merthyr Tydfil by-election, 1972: Lib (5) - behind CPGB
- Glasgow Central by-election, 1989: SLD (5) - behind Green
- Hamilton South by-election, 1999: LibDem (6) - behind Ind Mungall [SLP] and SSP
- Falkirk West by-election, 2000: LibDem (5) - behind SSP
- Blaenau Gwent by-election, 2006: Con (5) - behind Ind Dai Davies
- Glasgow North East by-election, 2009: LibDem (6) - behind BNP and Solidarity
Northern Ireland
editConservatives outside top four:
- Upper Bann by-election, 1990: Con (6) - behind UUP, SDLP, SF, Ind, Workers
- North Down by-election, 1995: Con (5) - behind UKUP, UUP, APNI, Ind U
Other
editElections in Britain with no official Liberal, Lib Dem or SDP candidate since 1970:
- Liverpool Scotland by-election, 1971
- Bromsgrove by-election, 1971
- Goole by-election, 1971
- Hayes and Harlington by-election, 1971
- Stirling and Falkirk by-election, 1971
- Widnes by-election, 1971
- Southwark by-election, 1972
- Lincoln by-election, 1973 (Democratic Labour stood)
- West Bromwich by-election, 1973
- Westhoughton by-election, 1973 (Democratic Socialist stood)
- Glasgow Garscadden by-election, 1978
- Glasgow Central by-election, 1980 (Ind Lib stood)
- Newham North East by-election, 1994 (nominated as Lib Dem candidate but left party before by-election)
Elections in Scotland with no official SNP candidate since 1960:
- Edinburgh North by-election, 1960
- Paisley by-election, 1961
- Rutherglen by-election, 1964
- Roxburgh, Selkirk and Peebles by-election, 1967 (Ind Scot Nat stood)
Elections in Wales with no official PC candidate:
Elections in Britain with no official Con candidate:
- Hemsworth by-election, 1946
- Ogmore by-election, 1946
- Carmarthen by-election, 1957
- Bristol South East by-election, 1963 (Ind Con and Nat Fellowship "Con" stood)
Elections in Britain with no official Lab candidate:
- City of London by-election, 1945
- Kensington South by-election, 1945
- Combined English Universities by-election, 1946 (Ind Lab stood)
Last by-election with x candidates:
Northern Ireland:
- 1: Armagh by-election, 1954 (UUP)
- 2: Fermanagh and South Tyrone by-election, April 1982 (Anti H-Block + UUP)
England:
- 1: Hemsworth by-election, 1946 (Lab)
- 2: Widnes by-election, 1971 (Lab + Con)
- 3: Ryedale by-election, 1986 (three major parties)
- 5: Cheadle by-election, 2005 (three major parties + Alliance for Change)
Scotland and Wales:
- 1: Edinburgh West by-election, 1941 (Con)
- 2: Rutherglen by-election, 1964 (Lab + Con)
- 3: Stirling and Falkirk by-election, 1971 (Con, Lab + SNP)
- 4: Coatbridge and Airdrie by-election, 1982 (four major parties)
- 5: Falkirk Central by-election, 2000 (four major parties + SSP)
- 6: Blaenau Gwent by-election, 2006 (four major parties + Ind and OMRLP)
Other minor parties to beat major parties:
- Glasgow Camlachie by-election, 1948: ILP beat SNP (+ Lib as above)
- Rhondda West by-election, 1967: CPGB beat Con (no Lib)