A member of staff at a restaurant in Northampton was assaulted as she escorted a man off the premises.
The man walked into The Smoke Pit in The Ridings and quickly became verbally abusive on Saturday, 11 June between 7pm and 7.30pm. As the victim guided him out, he grabbed her by the throat.
The offender is described as white with a tanned complexion, possibly a Cypriot, about 5ft 4in with a medium build and a bald head. He was in his late forties and wore a white tee shirt and dark trousers.
A photograph is attached of a man officers would like to speak to who they think may have important information about the incident.
Witnesses or anyone who recognises the man in the attached image are asked to contact police on 101 or Crimestoppers anonymously on 0800 111 555.