X Marks The Spot
The article goes on to say, "The Buckinghamshire mansion contained a secret radio room under the water tanks in a turreted tower known as Station X, used to maintain contact with British embassies in Occupied Europe."
A Royal Mail spokesperson is quoted in the piece as saying, "I’m not aware of anywhere beginning with an X in the UK, so we had to be a bit more creative. Some suggested King’s Cross station. But Station X is more appropriate because of its rich heritage in the war effort."
The first 12 stamps in the series, featuring places beginning with letters A to L, were issued last year and the final 14 (M-Z) came out this week.
Shown above, Station X Bletchley Park..