Two 14-year-old boys were attacked while walking along a subway tunnel last weekend.
The two boys were walking underneath Sunbury Cross Roundabout in the direction of KFC when they were approached by three older teenagers just after 8pm on Saturday April 26.
The three suspects surrounded the two victims and after an altercation made off with one of the boy's wallets containing over £100 in cash.
All the three offenders have been described as black, aged approximately 16-17 years-old, wearing dark clothing and hooded tops with the hoods pulled up tight around their heads and all three are reported as having London accents.
Police are appealing for witnesses and anyone with information is asked to contact Surrey Police on 101, quoting reference 45140033488, or call Crimestoppers anonymously on 0800 555 111.