A delivery driver had to be treated for bruising and cuts to his head and body after he was attacked by a group of men and the keys to his Tesco van stolen, police said.
Police are now appealing for witnesses after the robbery in Western Road, Hailsham, which happened at about 4.50pm on Monday (February 3).
The 23-year-old delivery driver for Tesco had pulled over for a phone call when he was robbed by a group of people, thought to be five men, two of whom punched him around the head, police said.
Police said two entered his cab, stole his keys and also tried to steal other items.
Police said they then scattered and made off in different directions.
The victim was treated for bruising and cuts to his head and body. Four of the suspects are described as white, according to police.
Police said one suspect was 5ft 10in, skinny, with dark short hair wearing a light coloured hoody and a silver watch, with a tattoo with the number 95 in dark italic font bordered with a frame of the same colour although the ink was turning slightly green, on his upper right arm.
Police said a second suspect was 6ft, skinny, in his early 20s, with light brown hair and side burns to half way down his cheeks, wearing a white, red and beige Burberry style check hoody and light green jogging bottoms.
Suspect three was described as in his late teens, 6ft and skinny, wearing a dark top and light trousers with short brown hair. He spoke with a Liverpudlian accent, police said.
Police said the fourth man was 5ft 10in, of chunky build, aged 18 to 20, with ginger brown, scruffy hair, wearing a blue hoody, light jogging bottoms and white skate shoes.
There is no description for the fifth suspect.
Witnesses call 101, email firstname.lastname@example.org,police.uk quoting serial 1202 of 3/2 or call independent Crimestoppers on 0800 555 111.