Mark ‘The Jester from Leicester’ Selby is the world snooker champion. He shocked holder Ronnie O’Sullivan to win last year’s final at the Crucible. Now firmly established as the sport’s No.1 ranked player, he is confident of retaining his title when the world’s best return to the home of the green baize today.

The Jester is a pro-US hacker who has infiltrated the websites of jihadists and Wikileaks. Michael Moynihan was granted a rare interview