A man sustained a serious head injury after being punched on board a Central line train.
British Transport Police are appealing for witnesses to the assault, which happened at 12.10am yesterday, to come forward.
The 54-year-old was punched and pushed on board the eastbound train between Bank and Stratford, and is currently in hospital.
Anyone with information should call BTP on 0800 40 50 40 or text 61016, quoting reference number 11 of 18 February.
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