Maldon: A new Democratic Alliance Group has been set up by four of the former Conservative councillors who left the party and had previously been sitting as non-aligned. They are Robert Boyce (Althorne ward), Richard Dewick (Tillingham ward), Adrian Fluker (Southminster ward), and Michael Helm (Mayland ward).
Norfolk: John Timewell, who was elected for the Liberal Democrats in North Walsham West and Erpingham ward, has left the party to sit as an Independent county councillor.
Liverpool: Warbreck ward, after the death of Labour councillor Richard McLinden. No byelection will be held as his term was extended to May next year.
Dates for byelections
In England, all current vacancies which do not fill a term ending in 2021 will be held on 6 May 2021, the ordinary day for local elections. The Cabinet Office has confirmed that local elections teams should not plan on this date being brought forward. In Wales, all byelections will be held in a period between 1 February and 16 April 2021.