A woman standing in a park with her baby in a pram was attacked from behind by a man wearing rollerblades.
The 34-year-old mother was in South Park, South Park Road, Ilford at 4pm on Thursday.
She was talking on her ViewPad, a tablet device, and then she was hit from behind in her lower back before her attacker snatched the pad from her hand.
The suspect is described as a white male, aged between 16 and 18 years old with short blond curly hair.
He was wearing a baseball cap, a grey hooded tracksuit top with grey jogging bottoms and red rollerblades.
Anyone with information about the incident should call Ilford police on 020 8345 2680 or, if you wish to remain anonymous, Crimestoppers on 0800 555 111.
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