Police are hunting for up to a dozen men and women after a Polish man was left with a fractured skull in a vicious attack on a Tube station platform.

The victim is fighting for his life in hospital and has bleeding and swelling on the brain more than two days on from the Sunday morning attack at busy central London Underground station Oxford Circus.

He was one of two men who were attacked by a group of between eight to 12 people on the southbound Bakerloo line platform at around 11.15am on Sunday. The other man is recovering at home.

It is thought the group got into a fight with the two men, British Transport Police said.

Officers have now released pictures of 10 people they are hoping to trace who they hope could help with their investigation.

“This was an unprovoked attack on two men who were going about their travel,” Detective Inspector Gabriel Oresajo said on Tuesday.

“Everyone has the right to travel on the rail network without fear of crime.

“I am keen to speak to anyone with any information, no matter how big or small the detail may seem.”

Oxford Circus is one of London’s busiest Tube stations and is packed at most hours of the day.

Anyone who has any information is asked to please contact British Transport Police on 0800 40 50 40 or text 61016 citing 195 of 05/11/17.