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
There's no love lost between Boris Johnson and Theresa May.
Eagle, who was one of 20 members of the shadow cabinet to resign, will formally announce her intention to stand on Thursday.
ITV News visits the rural county in the wake of the EU referendum result and finds increasing frustration with Britain's political leaders.