Harrow: The byelection in Kenton East ward on 20 April was won by Nitesh Hirani. Conservative gain from Labour.
Richmondshire: When nominations closed for the byelection in Reeth and Arkengathdale, only one candidate had been nominated; Ian Scott has therefore been elected unopposed and there will be no poll on 18 May. Conservative gain from Independent.
Rugby: A husband and wife pair of councillors who were elected as Independents in Dunsmore ward have joined the Conservative group. They are Howard Roberts and Deepah Roberts. The move gives the Conservatives an overall majority on the council (although it is also noted that Nigel Allen of Hillmorton ward has left the Conservative group).
Ashford: Victoria ward, after the death of Conservative councillor Harold Apps. Term ends 2019.
Cornwall: Bodmin St Petroc division, after the death of Liberal Democrat councillor Steve Rogerson. With full council elections due on 4 May there will be no byelection, but the council election will be postponed.
Dates for byelections
Salford: The byelection due in Claremont ward will be held on 8 June.
Southend-on-Sea: The byelection due in Shoeburyness ward will be held on 25 May.
Postponed poll
Cornwall: The election due on 4 May in Bodmin St Petroc division has been postponed after the death of Steve Rogerson, who had been nominated as the Liberal Democrat candidate.