South Derbyshire: Linton ward, after the death of Conservative councillor and former council leader Bob Wheeler. Term ends May next year.
Suffolk: Bosmere division, after the death of Conservative county councillor Anne Whybrow. Term ends 2021.
Winchester: Upper Meon Valley ward, after the resignation of Conservative councillor Amber Tresahar (formerly Amber Thacker). Term ends May next year. As a result the Conservatives have lost their overall majority on the council.
Dates for byelections
Epsom and Ewell: The byelection due in Nonsuch ward will be held on 20 September.
Luton: The byelection due in Limbury ward will be held on 20 September.
Suffolk Coastal: The byelection due in Wenhaston and Westleton ward will be held on 20 September.
Winchester: The byelection due in Upper Meon Valley ward will be held on 20 September.
Wyre Forest: The byelection due in Bewdley and Rock ward will be held on 20 September.