British Transport Police have released CCTV images of a man wanted in connection of a robbery.
The incident happened at Stratford train station at 3pm on Saturday, January 18.
Two men are reported to have threatened the victim and ordered him to hand over his bank card and pin number.
One of the men was arrested on suspicion of the offence.
Abdouihalim Tchagnani, 18, of Asplins Road, Tottenham, has since been charged and has appeared at court.
Officers are in the process of identifying the second man.
They would like to speak to the person in the image and ask anyone who knows him to contact BTP.
Witnesses can text 61016 or call 0800 40 50 40 and quote reference number 294 of 18/01/20.
Alternatively, call Crimestoppers anonymously on 0800 555 111.
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