A man came up behind a 19-year-old and sexually assaulted her while she worked in thecentre:mk’s John Lewis.
He touched her inappropriately over her clothes and then walked through the store and into the main John Lewis car park on Thursday at around 12.30pm.
Thames Valley Police has released CCTV images of a man that they would like to speak to in connection with the sexual assault.
Anyone who recognises the man in the image or who has any information about the incident is asked to contact Designated Investigator Darryl Morvan by calling the Thames Valley Police Enquiry Centre on 101.
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.