30 May:Birmingham, Kingstanding (2026). Rick Payne (Independent, elected as Conservative) has resigned.
4 June:Powys, Rhiwcynon (2027). Heulwen Hulme (Independent) has resigned.
6 June:North Lincolnshire, Axholme North (2027). John Briggs (Conservative) has died.
North Lincolnshire, Brumby (2027). Steve Swift (Labour) has died.
Telford & Wrekin, The Nedge (2027). Leanne Powers (Labour) has resigned.
Torbay, Wellswood (2027). Patrick Joyce (Prosper Torbay, elected as Conservative) has died.
13 June:Greenwich, Mottingham, Coldharbour & New Eltham (2026). John Hill (Conservative) has died.
Highland, Tain & Easter Ross (2027). Alasdair Rhind (Highland Independent) has died.
West Dunbartonshire, Clydebank Central (2027). Craig Edward (Independent, elected as Labour) has resigned.
20 June:Coventry, Radford (2024). Postponed from 2 May after Dave Anderson (TUSC Candidate) died.
Mansfield, West Bank (2027). Ben Brown (Conservative) has resigned.
Mid Devon, Tiverton Westexe (2027). Presumably it is Jamie Frost (Independent elected as Liberal Democrat), and that he's been disqualified for non-attendance.
Oxfordshire, Sutton Courtenay & Marcham (2025). Richard Webber (Liberal Democrat) has resigned.
Sefton, St Oswald (2027). Paula Spencer (Labour) has died.
Vale of White Horse, Sutton Courtenay (2027). Richard Webber (Liberal Democrat) has resigned.
27 June:
Cumberland, Harraby North (2027). Cyril Weber (Labour) has died.
Hackney, Hoxton West (2026). Yvonne Maxwell (Labour) has resigned.
South Tyneside, Primrose (2027). Paul Milburn (Independent) has resigned.
4 July:
Bristol, Horfield (2028). Deborah Vittori (Labour) has been disqualified for ineligibility.
City of London, Cripplegate (Aldemanic).
City of London, Farringdon Within (2025). Graeme Doshi Smith (No description) has been removed from the list of councillors.
Doncaster, Town (2025). Jake Kearsley (Labour) has ceased to be a councillor.
Haringey, Hornsey (2026). Adam Jogee (Labour) has resigned
Na h-Eileanan Siar, Na Hearadh (2027). Grant Fulton (Independent) has been removed from the list of councillors.
Preston, Lea & Larches (2026). David Borrow (Labour) has resigned.
Known vacancies:Argyll & Bute, Kintyre & The Islands (2027). Robin Currie (Liberal Democrat) has died.
Bassetlaw, Rampton (2027). Ant Coultate (Conservative) has ceased to be a councillor.
Brighton and Hove, Brunswick and Adelaide (2027), Jilly Stevens (Lab) has resigned.
Caerphilly, Aberbargoed and Bargoed (2027). Diana Price (Labour) has died.
Chesterfield, Spire (2027). Peter Innes (Labour) has died.
Chesterfield, Staveley North (2027) June Bingham (Liberal Democrat) has died.
Denbighshire, Rhyl Trellewelyn (2027). Win Mullen-James (Labour) has died.
East Suffolk, Carlton Colville (2027). Craig Rivett (Conservative) has been removed from the list of councillors.
Essex, Pitsea (2025). Luke Mackenzie (Conservative) has died.
Gosport, Grange & Alver Valley (2026). Maggie Morgan (Conservative) has died.
Kingston-upon-Thames, Hook & Chessington North (2026). Steph Archer (Liberal Democrat) has resigned.
Lancaster, University (2027). Erin Hall (Labour) has resigned as she is moving out of the area.
Lewisham, Blackheath (2026). [unknown] (Labour) has ceased to be a councillor.
Middlesbrough, Acklam (2027). [unknown] (unknown) has <unknown>
Middlesbrough, Central (2027). Matt Storey (Labour) has resigned.
Newham, Forest Gate North (2026). Sasha DasGupta (Labour) has ceased to be a councillor.
Newham, Maryland (2026). Ken Penton (Labour) has ceased to be a councillor.
South Derbyshire, Hatton (2027). Julie Jackson (Labour) has been removed from the list of councillors.
South Gloucestershire, Kingswood (2027). [unknown] (Labour) has resigned. Likely tobe Leigh Ingham.
Spelthorne, Ashford East (2027). Elizabeth Baldock (Independent Spelthorne Group) has been removed from the list of councillors.
Stirling, Dunblane & Bridge of Allan (2027). Ewan Dillon (Independent elected as Labour) has ceased to be a councillor.
Suffolk, Pakefield (2027). Likely to be because of Craig Rivett (Conservative).
Ribble Valley, St Marys (2027). Stewart Fletcher (Progressive Democrat, elected as Liberal Democrat) has resigned.