Harry Potter - Knight Bus Slider Charm Harry Potter - Knight Bus Slider Charm Harry Potter - Knight Bus Slider Charm £5.00 Quantity: at £5.00 each Add To Basket 2 in stock. Official Harry Potter Slider Charm Knight Bus Charm on a silver plated charm bail The Triple Decker Bus tat transports lost wizards in the Prisoner of Azkaban This charm has been created using the official style guide from Warner Bros. It is approx 15mm in height This charm comes on the official Harry Potter branded card packaging and shows the Warner Bros logo on the reverse. This charm is compatible with our other Harry Potter slider charms, necklaces and bracelets. The Carat Shop are the official licensed manufacturers of Harry Potter Jewellery on behalf of Warner Bros.