A couple have become the UK's longest-serving pub quiz hosts — having posed a staggering 450,000 questions over the past 30 years.Geoff and Val King held their very first quiz night at The Longshoot Hotel in Nuneaton, Warwickshire, back in 1996, and are still firing questions at eager pub-goers three decades on.Despite leaving school without a single qualification between them, the pair now helm five quiz nights a week, putting some of Britain's sharpest minds to the test.READ MORE: Coventry woman in 'Bonnie and Clyde' relationship with gang member told to 'hang head in shame'READ MORE: Coventry's best Chinese takeaways...