A 15-year-old girl has been charged over an assault that left another girl in a critical condition in hospital.

The girl was arrested in connection with the incident on Saturday evening, where another 15-year-old girl was assaulted shortly after 6pm on Falcon Road, near the junction with St Johns Road.

She was charged with GBH and appeared before Balham Youth Court on Tuesday and remains in custody.

The victim was taken to hospital on Saturday night, where she remains in a critical condition.