Funny you should say that my mate has footage of a twister over a Worcestershire village filmed last year. That and the damage caused over Brum over the last few years i would say that they have been here for sometime!!
I think England has the most number of twisters (proberly per land area) in the world. Particularly around the Birminham area. However these are rarely the size of those seen in the States so don't get the publicity.