The Liberal Democrats win a landslide victory against the Conservatives, reducing their already slim majority.
Jared O’Mara, MP for Sheffield Hallam, has announced he will stand down as a member of Parliament.
The Liberal Democrats are on course for a by-election win in Brecon and Radnorshire, an opinion poll suggests.
A full list of candidates for the Brecon and Radnorshire by-election on August 1st
A full list of candidates for the Peterborough by-election on June 6th