Police are searching for a man who allegedly punched a commuter in the face on board a train in Lewisham.

The assault was reported at Grove Park station on a Southeastern train travelling between Charing Cross and Hither Green at 11.30pm on May 24.

A young man suffered a cut lip after being punched and police have now released an image of the suspect.

A British Transport Police statement read: "A man in his twenties was punched in the face by another man. The victim received a cut to his lip. All parties left the train at Grove Park.

"Officers believe the man shown in this CCTV image may have information which could help them investigate.

"If you know who he is, contact BTP by sending a text to 61016 or by calling 0800 40 50 40 quoting reference 749 of 24/05/2019. Or you can call Crimestoppers anonymously on 0800 555 111."