BNV
When these things happen always make a note of the exact time and place it occured especially if CCTV is involved. Another thing is regarding the the tall slim black boy was he of Somalian appearance? Tell us what road you were robbed in. Detail is essential.

Somalians look very different from other blacks and are usually easy to identify. I have noticed a Somalian boy who fits the description you gave frequenting this area. In fact he lives across the road but I dont think he is a criminal type.