Clacton MP Douglas Carswell has said he will stand down as an MP and then stand for Ukip in the resulting by-election following his defection from the Tories.
He today announced that he would be leaving the Conservative Party, claiming the party's leadership are "not serious" about the change the UK needs.
If successful, Mr Carswell would become the eurosceptic party's only Westminster MP.
More top news
WARNING: Some people may find some of the images in this report distressing.
Medical staff who helped during the Westminster terror attack have received a royal thanks for their life-saving efforts.
Colin Gregg, the son of the founder of the Greggs bakers chain, has been jailed at Newcastle Crown Court for 13 and a half years.