David St John is a professional comedy entertainer, with a lifetime of appearing on stages across the UK and overseas, who decided to try his luck on a TV quiz show in 1982. Having won 'The Sale of the Century', he then followed up with some 34 appearances over the next thirty years, on many top-rated shows. In July 2014, David was validated by the Guinness Book of World Records, with the most TV quiz show appearances. This book offers an insight...