mistress, while the Ministry assigns Manton Bassett to send in a new inspector to St. Trinian's after two others disappeared - unaware that they now work at the school. Clarence soon learns from Arabella that the Sultan's racehorse is likely to win the race. Arabella suggests to her father that 'her gang' can incapacitate the stable guy and abduct the Sultan's racehorse, hiding it until the race is over. At the same time, several girls report on the horse's performance to Millicent, who is convinced to place a sizeable wager on it via the local spiv, 'Flash' Harry. When Fatima discovers Arabella leading a contingent of renegade sixth form girls to kidnap the horse, she leads a group of her fourth form classmates to recover the animal and smuggle back it to the racecourse before the race begins. As the police and Ministry are left embarrassed in their failing to prevent trouble, the girls ensure the racehorse wins. As Millicent is berated by the girl's parents over the way she has run the school, Harry arrives with news of the win which has netted the school the money it needed to stay open, much to her relief. Cast Ronald Searle appeared in a cameo role as a visiting parent. Roger Delgado plays the Sultan's aide. It was also the first film appearance of Barbara Windsor, then a teenager. Production The film was based on the cartoons of Ronald Searle. He started doing sketches at the beginning of the war and continued to do them as a POW in Singapore. After the war they became very successful. By the time the film was made Searle had become tired of them. Filming Filming took place in April–May 1954. The opening scenes of the girls returning to school were filmed at what is now the All Nations Christian College near Ware, Hertfordshire. This includes the entrance gate of Holycross Road and the outside shots of the school. The bulk of the film was shot at Shepperton Studios near London. The film's sets were designed by the art director Joseph Bato. Music The music for the film was written by the English composer Malcolm Arnold. The music was arranged as a concert suite for orchestra with piano four hands by Christopher Palmer. The suite was performed at the BBC Proms in 2003 and 2021. Reception Box Office The film was the third most popular