London underground stations with letter X in the name?

Oxford Circus, Vauxhall, Croxley, Brixton

Note: Some stations are shortened to include an X like Charing X, Kings X, etc

Also: Saint is sometimes shortened to X but never on Lodnon Underground so St John's Wood is never X John's Wood.

Add Uxbridge to make 5 London Tube stations containing the letter X.