These popular walks, led by Blue Badge Guides, are now in their fifth year and advance booking is essential.
* The Saturday walk, on 24 July, does not stop at the Anaesthesia Heritage Centre, instead allowing extra time at the Grade I listed home of the Royal College of Physicians and at the British Dental Association.
Booking: Advance booking is essential
Location: meet at Great Portland Street tube station
Tickets: £9
Contact details: 020 7034 4901 or paula.croisier@rcplondon.ac.uk