Drawing on extensive knowledge and celebrating London's diverse riches, this quiz book invites you to come on a wide-ranging exploration of the megacity the author calls 'The Big Onion'. Peel away its many layers in the company of one of London's top Blue Badge tourist guides. These 22 tours will inspire you, your family, colleagues and friends to leap from page to pavement in the entertaining company of a local expert. Have fun!

This was the first in a series of regional quiz books written exclusively by Blue Badge guides - 'Britain's best guides' - local, professional guides rigorously examined by the Institute of Tourist Guiding, the industry's standard-setting body. World-renowned for their knowledge, interpretation skills and enthusiasm for their area!

Mark King is a professional London tourist guide who is renowned for his expert knowledge about the capital's history. He has had a varied career working for companies such as Saatchi & Saatchi Advertising and a number of City law firms. Currently, as well as leading tours, he manages a north London community-based group raising funds for charity by writing and delivering quizzes for clients, and is a volunteer explainer for English Heritage at Kenwood House.