Overview
- The appeal follows a reported sexual assault on the 30 September service after a woman boarded at Duffield around 4.45pm.
- Police say a man in a group of three assaulted the passenger as she walked through the carriage and later left the train at Nottingham.
- Officers released a CCTV image of a man they want to identify in connection with the investigation.
- The man is described as white, bald on top with grey hair at the sides, wearing glasses and a two-tone grey long-sleeved top with a dark-grey button-down collar.
- Information can be provided by texting 61016 or calling 0800 40 50 40, or anonymously via Crimestoppers on 0800 555 111.