YORK'S National Railway Museum is a "treasure trove" according to popular comedian, author and actor David Walliams.

The Britain's Got Talent judge tweeted about his visit to the museum this morning and admitted to being "something of an enthusiast".

He said: "I loved visiting ⁦@railwaymuseum⁩ today which I last went to when I was 12.

"It is a treasure trove of famous locomotives & trains.

"My dad worked on the railways as an engineer & my granddad gave me a ⁦@hornby⁩ train-set when I was 8 so I am something of an enthusiast."