A 15-year-old boy has been charged with attempted murder after a man was stabbed on the platform of Caledonian Road and Barnsbury Overground station on Thursday.
The teenager has been remanded in custody and will appear at the Old Bailey on September 12.
British Transport Police officers are looking to trace a second man believed to be connected to the attack.
He is black and of medium build, and was wearing a black baseball cap, patterned blue jumper and dark jacket.
Investigating officer Det Sgt Av Dhaliwal said: “We are working to establish the exact circumstances of what happened at the station.
“If you have any information, I urge you to get in touch as soon as possible.
Anyone with information is asked to contact British Transport Police on 0800 40 50 40 or text 61016, quoting 329 of 25/08.
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