The Glass House, 42 Bull’s Head Passage, Leadenhall Market, EC3

Walk down the south arm of Leadenhall Market. On the right runs the tiny Bull’s Head Passage. Opticians The Glass House (which was an empty shop at the time of filming) became ‘The Leaky Cauldron’, which contains the entrance to ‘Diagon Alley’, where Hagrid (Robbie Coltrane) takes Harry (Daniel Radcliffe) to buy his wizard school supplies in Harry Potter and the Philosopher’s Stone.

Harry Potter And The Philosopher's Stone (2001, dir: Chris Columbus)