Inspired by my book ‘Walk the Lines: the London Underground - Overground', each of these trivia-packed walks uncovers London’s history by following a section of a Tube line - at street level

When a city is as littered with intriguing curiosities as this one, you need a framework to make sense of it all. What better framework than the Underground system? We'll take a stroll along a stretch of Tube line, learning about the secrets and oddities we pass along the way.

On the District Line we’ll learn how long it's going to take Big Ben to fall over ... the Piccadilly Line will reveal why Paul McCartney is one of only two people allowed to whistle in the Burlington Arcade ... while walking the Central Line we’ll discover how someone broke into the vaults of the Bank of England.

As well as these pre-set routes, I’m also happy to design specially-tailored walks that take in your areas of interest, either geographical or topical  – do drop me an email for details.

‘Mark Mason is one of our heroes’Time Out

‘Lots of information one usually doesn't get' - Barbara, Germany

‘I can't recommend these tours highly enough.' - Jonny, London

‘Excellent knowledge! Can totally recommend Mark as a walking tour guide. Had great fun!' - Laura, London

District Line

District LineVictoria to Embankment, featuring boozy politicians and secret glimpses of Tube trains


Piccadilly Line

Piccadilly LineGreen Park to Covent Garden, featuring a cricket bat and Sherlock Holmes


Central Line

Central LineBank to Chancery Lane, featuring pineapples and a helicopter



London Bus

A London double decker bus can lean further from the vertical without falling over than a human can. What a great way of learning about centres of gravity. The reason a Routemaster can lean so far is that there's a great long strip of pig-iron welded to its base, keeping you top-deckers safe as you go round corners. If you want reassuring photographic evidence, click here