13 July:City of London, Castle Baynard (Alderman). Ian Luder has resigned.
Newham, Boleyn (2026). Cecilia Welsh (Labour) has resigned.
Newham, Wall End (2026). Luke Charters (Labour) has resigned.
Norfolk, West Depwade (2025). Barry Duffin (Conservative) has died.
Rotherham, Dinnington (2024). Charlie Wooding (Independent elected as Conservative) has been disqualified for non-attendance.
20 July:Ceredigion, Llanfarian (2027). Geraint Hughes (Liberal Democrat) has resigned.
Swindon, St Margaret & South Marston (2026). Pam Adams (Labour) has died.
Worcester, Nunnery (2024). Simon Cronin (Labour) has died.
27 July:Buckinghamshire, Denham (2025). Paul Bass (Conservative) has resigned.
East Sussex, Heathfield & Mayfield (2025). Rupert Simmons (Conservative) has died.
Plymouth, Plymstock Dunstone (2026). Vivien Pengelley (Conservative) has died.
Plymouth, St Peter & The Waterfront (2026). Susan McDonald (Labour) has resigned.
Warrington, Paulton North (2024). Diana Friend (Labour) has ceased to be a councillor.
3 August:Dudley, Wollescote & Cradley (2027). Richard Body (Labour) has died.
East Sussex, Meads (2025). Barry Taylor (Conservative) has died.
Norfolk, Freebridge Lynn (2025). Nick Daubney (Conservative) has died
Reading, Norcot (2027). Colette Dennis (Labour) has died.
10 August:
Havering, Upminster (2026). Linda Hawthorn (Havering Residents' Association) has died.
Somerset, Castle Cary (2026). Mike Lewis (Conservative) has died.
Wychavon, Evesham South (2027). Ed Cohen (Green) has died.
17 August:
Middlesbrough, Ayresome (2027). Antony High (Labour) has resigned.
28 September:Highland, Tain & East Ross (2027). Sarah Rawlings (Liberal Democrat) has resigned.
Known Vacancies:Barking & Dagenham, Mayesbrook (2026). Nashitha Choudhury (Labour) has resigned.
Bristol, Bishopston & Ashley Down (2024). Lily Fitzgibbon (Green) has resigned.
Broadland, Thorpe St Andrew North West (2027). Drew Moore (Labour) has ceased to be a councillor.
Caerphilly, Penmaen (2027). Jim Sadler (Labour) has died.
Chorley, Croston, Mawdesley & Euxton South (2024). Keith Iddon (Conservative) has died.
Derbyshire, Swadlincote South (2025). Roger Redfern (Conservative) has died.
Herefordshire, Golden Valley South (2027). Peter Jinman (Independent for Herefordshire) has died.
High Peak, St John's (2027). Pauline Bell (Labour) has ceased to be a councillor.
Lancashire, Chorley Rural West (2025). Keith Iddon (Conservative) has died.
North Somerset, Wrington (2027). Stephen Hogg (Independent) has resigned.
St Albans, Marshalwick East & Jersey Farm (2024). Elissa da Costa-Waldman (Liberal Democrat) has ceased to be a councillor
Suffolk, Woodbridge (2025). Caroline Page (Liberal Democrat) has died.
Wolverhampton, Bushbury South & Low Hill (2024). Ian Brookfield (Labour) has died.