But which languages would you want the station signage to be in to make it easier for those visiting (keeping in mind the wide-range of tourists who visit the UK)?
Yeah, without wanting to sound conceited English is pretty much a universal language. Perhaps Spanish as from experience a lot of people in South America don't learn English as every country in the area speaks Spanish (Or Portuguese). Maybe Cantonese or Mandarin? I really don't have a clue about how many people in Asian countries speak the various languages. I don't see much point in German, French, Dutch etc. as they generally speak better English than us.