The aggravated burglary happened on Sunday 18 November at 7.20pm in Sidlaw Terrace, Bognor.
Several people, up to six, caused minor injuries to two victims and another victim at the address suffered a 5cm cut to the rear of his head. They then stole two laptops, a mobile phone and camera and left.
The injured man was treated in hospital and then released.
The suspects are described as male, each around 5’ 11’ and wearing dark clothing with hoods.
Anyone with information should contact Sussex Police on 101 quoting serial 1355 of 18/11.