Watch for response from Reform's rivalspublished at 14:57 BST
Chris Mason
Political editor
What's going to be really interesting in terms of the coming battle is the response of Reform's rivals.
If we rewind the clock at 18 years, Conservative MP David Davis voluntarily triggered a by-election in his constituency over an argument that he was making about civil liberties, which he felt were being trodden on by the then Labour government.
That decision took quite a lot of Conservatives by surprise and plenty of the big other parties didn't contest that by-election.
They didn't want to play into the self-delivery of theatre, as they saw it, that Davis chose to engineer.
So let's see, the best part of two decades on, how the Conservatives and Labour and others choose to approach this.




