A 23-year-old man was punched to the floor while his watch was forcibly removed from his arm by three men.
The attack happened on Monday at around 3am when the victim was walking along Avebury Boulevard into the car park area between South Seventh and South Sixth Street.
Three men got out of a dark Volkswagen hatchback and threatened the victim with violence if he refused to hand over his belongings.
The victim attempted to walk away, but was punched to the floor while items in his pocket and a brown leather FOSSIL watch were stolen.
He suffered cuts and bruises.
An e-fit of one a man Thames Valley Police would like to speak to in connection with the robbery was released today.
If you have any information please contact PC Kay Chahal from Milton Keynes police station via the Thames Valley Police Enquiry Centre on 101.
If you don’t want to speak to the police you can contact the independent charity Crimestoppers anonymously on 0800 555 111 or online at Crimestoppers-uk.org.
No personal details are taken, information is not traced or recorded and you will not go to court.