Police are investigating a sexual assault which took place on a London Paddington to Plymouth train.
The assault took place between 9.30-10am on August 28, the British Transport Police said.
According to the BTP, the victim was standing in the aisle when they were sexually assaulted by the man.
Officers have released an image of a man they may have information that could help their investigation.
If you recognise him, or have any information, please contact the British Transport Police by texting 61016, or by calling 0800 40 50 40, quoting reference 389 of 28 August 2023.