A man was grabbed round the neck by a stranger in a Hailsham coffee shop.
The attack took place in Costa Coffee, in the town’s High Street, on April 1 at 5.15pm.
The 45-year-old victim was by the service counter when the attacker grabbed him, damaging his clothes.
The suspect is described as a white man, aged 35-40.
Anyone who witnessed the incident is asked to email firstname.lastname@example.org or phone 101, quoting serial 1200 of 1/4.
Alternatively, they can call the independent charity Crimestoppers anonymously on 0800 555 111.