A man was robbed in Petworth during the early hours of Tuesday, June 7.
The 37-year-old was walking along Lombard Street at around 2am when he was grabbed from behind by two men.
His pockets were searched by the men and he was pushed against a wall, which caused a lump and bruising to his head.
Personal possessions were stolen from him.
The men are described as wearing dark clothing.
Police are asking anyone with information to contact them on 0845 60 70 999.