Police are calling for help from the public to trace a teenage girl who has been missing since Friday.

Selina Bicknell, 13, was last seen at 8am on June 20 at her home address in Harrow.

Officers describe her as white, of an athletic thin build, and with long brown hair.

She was last seen in her school uniform which is a black blazer with purple and white emblem, white shirt, white, black and purple striped tie, and was carrying a black satchel with gold Adidas logo.

Police say she is known to visit the Harrow, Ilford and Walthamstow areas and anyone with any information is urged to contact officers.