A grammar school Christmas party called the 'Snow Ball' was shut down by police after bags of cocaine were found in the toilets.

Officers raided the event at Cheltenham racecourse after staff discovered the white powder in both the female and male facilities.

MDMA, commonly known as ecstasy, was also found in the toilets.

The party ended three hours early and the teenagers, from two grammar schools in Stroud, Glos, were sent home.