Police are searching for a man who urinated on a train carriage then sexually assaulted a woman. 

The man, who was travelling with a group, urinated in the carriage then threw a seat cushion at another passenger as the train approached New Eltham station. 

When a woman boarded the train at New Eltham station and he approached her. 

The man made an inappropriate comment then sexually assaulted her, before getting off the train before it departed the station. 

The incident took place just after 2pm on Tuesday, April 4. 

British Transport Police have release CCTV images of a man who may have information that could help their investigation. 

Officers would also like to speak with anyone on-board the train who may have witnessed it. 

Witnesses, or anyone with information, can contact BTP by texting 61016 or calling 0800 40 50 40 quoting reference 326 of 4 April. 

Alternatively, call Crimestoppers anonymously on 0800 555 111.