I had far more guesses for this quiz than I expected, and all bar one entrant guessed
London Marylebone.
Those were:
tangy
nozzacook
Starkey7
Sam
RobbieM
garion24wales
Nigel
jbom
tubeguru
They were all correct.
Steeevooo was the only person who remembered
this thread wherein I mentioned that I might include previous stations from LU maps, and guessed another station entirely...which happened to be the station that I
intended to post a picture of, before uploading one that I'd mislabelled (this explanation has been hastily rewritten due to rhubarbrhubarb helpfully pointing out my mistake and removing the egg from my face).
Holder of the slowest recorded 274 attempt: 4 months, 1 day, 9 hours, 17 minutes, 32 seconds.