It is denoted via a plaque and luggage trolley that appears to be stuck halfway through the magical entrance.īut be warned, the description of the area might be different from what you read in the books. After undergoing extensive refurbishment for the whole of King's Cross, the entrance to the mythical Platform 9¾ was built in the main concourse area near a shop that sells 'Harry Potter' merch. So great is the popularity of the 'Harry Potter' books and movies that the authorities at King's Cross have actually included references to the magical platform on a permanent basis.