At which London station would you catch the Hogwarts Express?

The correct answer is King's Cross, as this is the iconic station depicted in the Harry Potter series where the Hogwarts Express departs from platform 9¾. This platform is a fictional element in the story, serving as the gateway for students traveling to Hogwarts School of Witchcraft and Wizardry. The popularity of this connection to the books has made King's Cross a significant tourist attraction, complete with a dedicated photo opportunity featuring a luggage trolley disappearing into the wall, representing the magical entrance to the train.

The other stations do not have this association with the Harry Potter series. St Pancras, although nearby, serves as an international station primarily for Eurostar services to continental Europe. Euston is a major rail terminus but is not connected to the Hogwarts Express narrative. Victoria Station primarily serves services to the South of England and Gatwick Airport, further reinforcing that it is not related to the Harry Potter train.