The original game's open-ended nature helped it to become a hit and reach so-called "casual gamers" outside the medium's more dedicated audience.

But antisemitic comments made throughout his life led to Dahl being a highly problematic figure.

"In the back room I felt really nervous, on edge," said Bunting, who won the BDO world title at Lakeside 11 years ago.

At Washington Union Station, Amtrak passengers are not permitted on to the platform prior to a set boarding time, and passengers' tickets are checked prior to boarding – similar to the process for boarding an airline.

Joseph Lindsay

@josephlindsay