By Harriet Arkell PUBLISHED: 08:46 EST, 11 February 2013 | UPDATED: 20:49 EST, 11 February 2013 Quiz show king: David St John, 64, has appeared on 28 television quiz shows over 31 years For more than 30 years, no one has questioned his passion for entering TV quiz shows. In fact, David St John claims to be Britain’s most prolific contestant. The trivia-mad 64-year-old has racked up 27 appearances on game shows including 15 to 1, Eggheads, The Chase and The Weakest Link. He first put his grey matter – and his seemingly unchanging hairstyle – to the test on TV in 1982 on Sale Of The Century, and won two motorcycles.
@highlight
David St John, 64, won two motorbikes on Sale Of The Century in 1982
@highlight
Since then he's made another 27 appearances on television gameshows
@highlight
The quiz-mad father of two has won thousands of pounds and other prizes
@highlight
He says wife, Maria, 59, is happy 'especially if I come home with a few bob'
@placeholder champions: Mr St John, kneeling far right, was part of the victorious British team in 1986