Aberdeen: Kincorth/Nigg/Cove ward, after the impending resignation of Scottish National Party councillor Stephen Flynn, now Member of Parliament for Aberdeen South. He has said he will resign on 4 March. Term ends 2022.
Adur: Eastbrook ward, after the death of Labour councillor Les Alden. His term was due to end in May so no byelection will be held.
Bexley: Longlands ward, after the impending resignation of Conservative councillor Gareth Bacon, now Member of Parliament for Orpington. Term ends 2022.
Hertsmere: Borehamwood Kenilworth ward, after the resignation of Labour councillor Kumail Jaffer who has a new job in Scotland. Term ends 2023.
Middlesbrough: Coulby Newham ward, after the resignation of Independent councillor David Smith who was elected for the Conservative Party. Term ends 2023.