How's your Who? If you're a Doc obsessive, you'll be well aware that London is his stomping ground, its streets the setting for some of his strangest encounters. This unique walking tour will take in locations that are synonymous with the great adventurer, cramming in fascinating trivia along the way. Who knew so many alien travellers and time-shifting foes were lurking in the heart of the capital? Dr Who knew. Wear comfortable shoes and suitable clothing. Tour lasts around 2.5 hours.