Horseracing is a serious business, generating GBP 10 billion in annual betting turnover and employing 100,000 people. It can make millionaires and bankrupt others in the flash of a photo-finish. However, since joining the "Daily Telegraph", Grand National-winning jockey Marcus Armytage - with an eye and an ear for the ridiculous - has been lightening up the Sport of Kings in his weekly columns and, latterly in the leading equestrian magazine "Horse & Hound". "Turn me on, Guv" brings together a further collection of hilarious racing anecdotes complemented by cartoons from leading caricaturist Mark Hutchinson.