Dave Black, from Colchester, Essex, has decided to give up his job as a bus controller to become a full time Elvis Presley tribute act. Since he was a child, Dave had wanted to be an entertainer and, after entering a talent competition at work a few years ago, he discovered that he had a natural flair for impersonating the king of rock ‘n' roll. Now 52, he is finally ready to take the plunge. He has taken redundancy and has invested over £10,000 in costumes and singing lessons, to