British Transport Police have released a Youtube video of the moments leading up to an assault on board a train.
The attack took place on a train from London Euston to Northampton train in November.
All rail passengers rightly expect to be able to travel without the fear of violence or intimidation. We are doing all we can to catch the person responsible.PC Alex Trevino
Police released still CCTV images shortly after the incident, which resulted in a number of leads but so far the suspect has still not been identified.
PC Alex Trivino, leading the investigation, said: “The train left London Euston at 11.24pm on Friday, November 14, and an assault took place on board as it pulled into Milton Keynes around an hour later at 12.20am on Saturday, November 15.
“The victim, a 41-year-old man, was travelling in a first class carriage.
“Throughout the journey, a man and a woman were talking to various other passengers in the carriage. As the train pulled into Milton Keynes, this man assaulted the victim, causing a cut underneath his left eye which required treatment at A&E.”
Officers have been pursuing several lines of enquiry and hope today’s fresh appeal will help them identify a man they want to speak to.
PC Trivino said: “I am confident that someone will recognise the man shown in these good-quality moving images.
“I want to urgently speak to him about what happened.
“I would also like to hear from anyone else who was on the train, and saw what happened, and has not yet come forward to police.”
And he added: “All rail passengers rightly expect to be able to travel without the fear of violence or intimidation. We are doing all we can to catch the person responsible.”
Contact British Transport Police on 0800 40 50 40, or text 61016, quoting reference MSUB/B4 of 16/03/2015.
Or contact independent charity Crimestoppers anonymously on 0800 555 111.
Click here to watch the footage.