A teenage boy was punched in the head three times and kicked twice in the torso when he was assaulted by two men in Kingston car park.
The 17-year-old was grabbed and pulled to the floor as he walked to his moped last week.
He suffered scratches and swelling around his right eye and eyebrow following the attack at 11.05pm on July 7.
The first offender is of mixed race, in his twenties, about 6ft 1ins, of medium build and was wearing his hood up.
The second offender is of mixed race, about 6ft 5ins, of medium build and was wearing his hood up.
Both offenders ran off in the direction of the underpass which leads to Monkston and Walnut Tree.
PC Christine Russell, said: “CCTV enquiries have been carried out and I am currently hoping to hear from anyone who may have seen these men leaving the area or who may know who they are.
“Anyone with any information about the incident which may assist the investigation should contact the 24-hour Thames Valley Police enquiry centre on 101.”
If you do not want to speak directly to the police contact Crimestoppers anonymously on 0800 555 111.
No personal details are taken, information is not traced or recorded and you will not go to court.”