Inside Kings Cross one might find Harry Potter’s famous Platform 9 and 3/4
By heading for Platform 9 …..
.. and finding the shop ….
….. and then the Platform
You will have your photograph taken but only pay for if you want to buy at the shop. You can have a friend take photographs without cost. But, on busy days there is a queue.
There are tours of London film locations like this one ⇒ and the Warner Bros Harry Potter Film Studios ⇒ at 20 miles north-west of London. You can also google for travel inclusive tours. Have fun but watch out for those shop prices.