Detectives have issued an appeal for anyone who witnessed a serious assault at Sheffield station to come forward.

The assault took place shortly before 21.00 on Saturday 5 August. An altercation took place after the train had arrived at Sheffield, with the resulted in the victim sustaining a fractured skull as well as a bleed on the brain.

The victim had boarded the train at Leeds and the service stopped at Wakefield prior to its arrival at Sheffield.  The victim had a disagreement with a group of men.  The group boarded the train at Wakefield and left the service at Sheffield.

An earlier appeal helped to identify four men who are now assisting police with their enquiries but officers hope that, as a result of this appeal, more witnesses will come forward.

Anyone with information is asked to contact BTP by texting 61016, or by calling 0800 40 50 40 quoting reference 2300091408.

Alternatively, call Crimestoppers anonymously on 0800 555 111.