After a morning of relatively heavy activity on the betting markets the ex-Etonian, David Cameron, has now moved into second favourite position on Betfair. At the time of this post he was on was at 4/1 compared with the 4.6/1 available on Ken Clarke.

Whether this will be sustained after Ken Clarke’s speech this afternoon we will have to wait and see but Cameron continues to get serious attention from the punters.

David Davis, meanwhile, has moved a little bit further out to 0.7/1

Mike Smithson>