In the byelections held on 25 September to Swale borough council, Sheppey First! lost both of the seats it was defending. Minster Cliffs ward went to the Conservatives, while Sheerness East ward went to Labour.
The Liberal Democrats secured two gains from the Conservatives. In Hampstead Town ward of Camden borough council: Hampstead Town ward, they took the seat of Mike Greene who had resigned to pursue the Parliamentary nomination for Bournemouth West; in a double blow to Mr Greene, he did not make the shortlist in Bournemouth and Conor Burns was selected instead. The Liberal Democrats also gained Alfriston ward on Wealden district council from the Conservatives.