Which kings cross platform do you need for theHogwarts Express?

To catch the Hogwarts Express, you need to go to Platform 9¾ at King's Cross Station in London. This platform is located between platforms 9 and 10 and is fictional, as it is part of the Harry Potter series. In reality, there is a photo opportunity for fans at King's Cross Station where you can pose with a luggage trolley disappearing through the wall.