Woolfe openly admitted to having talks with the Tories about defecting when he missed the deadline for standing for leader of the party but had decided against it. Presumably the Tories decided they didn't want him after all.
Back in January last year when Amjid Bashir defected to the Tories after being suspended over allegations of financial misconduct and interfering with candidate selections, Woolfe said:
I am deeply disappointed with Mr Bashir, for not honouring the responsibility in his pledge to UKIP members to represent them.So Woolfe will be resigning and letting the next person on the UKIP list take on the responsibility of representing UKIP members? No? Only applies to other people presumably.