A man was punched in the face so hard he suffered a broken skull - all because his alleged attacker was angry over a bike.
The unprovoked assault, at Marble Arch underground station, was sparked after a group of men were told they could not travel with their bikes, British Transport Police said.
The victim, a 38-year-old man, was walking through the station at about 10.45pm, on March 31, when he was suddenly punched.
He was struck so hard his skull was broken, needing immediate hospital treatment, and still suffers headaches and sleepless nights, weeks after the assault.
Investigating officer, Det Con Michael Hatcher, said: “The victim in this incident is still suffering the consequences of this offender’s actions – he is having trouble sleeping and has regular headaches.
“There was no apparent motive for this attack, other than mindless violence, and so we are keen to trace those involved."
British Transport Police believe the offender was part of a wider group of men who had been refused travel because they had bikes with them.
Officers have released a CCTV image of the a man they believe will help with the investigation.
DC Hatcher added: “If you know the man in this image, please let us know on 0800 40 50 40 or text 61016, with the reference 685 of 31 March.”
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