The former Newcastle United and Tottenham midfielder, who lives in Gateshead, was arrested after officers were called to the station at about 10.30pm and was later released on police bail.
Following a BTP investigation, a file was forwarded to us to consider whether any criminal charges could be brought against the 46-year-old man.
Having carefully reviewed all of the available evidence, Thames and Chiltern CPS authorised officers from BTP to charge the man with common assault and being drunk and disorderly.
More top news
Eleven police officers are under criminal investigation over their handling of child sex abuse allegations against Lord Janner.
Elena Veronica Ciochina left her home in Newham on Saturday night and hasn't been seen since.
Sarah Champion quit in June as 172 Labour MPs backed a vote of no confidence in the party leader - but she has now asked for her job back.