A woman was assaulted outside Xscape after being followed by three men.
It happened in the early hours of Saturday morning, between 1am and 2.30am, near the Harvester restaurant.
After being punched in the face, the 25-year-old victim fell to floor and was then punched again.
She was taken to Milton Keynes hospital and was then transferred to Luton and Dunstable for treatment to her mouth.
PC Adam Jones from Milton Keynes police station said “We are doing everything we can to trace the offender in this incident and I would urge anyone with information to call police via 101.”
The first offender is black, short and wore a red t-shirt. The second offender is black, broad and was wearing a dark blue shirt. The third offender is black and was wearing a black leather jacket.
If you don’t want to speak directly to the police you can contact Crimestoppers anonymously on 0800 555 111.
No personal details are taken, information is not traced or recorded and you will not go to court.