Police are hunting for a group of thugs after a number of passengers were attacked on a train between London and Surrey.

The unprovoked attacks happened on a train as it travelled from Tulse Hill in south London to Tattenham Corner in north Surrey.

One man had his tooth broken after being punched in the face. A second man suffered a broken nose.

British Transport Police said three attackers were reportedly involved.

The force has released images of men it believes could help their investigation.

The incident happened at about 7.40am on Sunday, February 10.

Anyone who witnessed the incident, or who knows the identity of the men, are asked to contact BTP by texting 61016 or by calling 0800 40 50 40.

Alternatively, call Crimestoppers anonymously on 0800 555 111.