"On May 12, 2013, just a few days before Drummer Rigby's death, as part of an exchange of letters which otherwise I prefer to keep private, I wrote to Mr Clegg, 'Of course, the most important issue about all this is the safety of the public. If it really is the position that you have vetoed the substance of the previously proposed legislation, I fear that this may come to haunt you and the party if any terrorism event occurs which could otherwise have been avoided'.