about as hilarious a 50 british comedy can get and the belle of st trinians have almost a gag a minute . and at 91 minute make for a terrific time . other film i equally recommend of the same period be the titfield thunderbolt and the green man . in fact any film with alistair sim or terry thomas and george cole and richard wattis or joyce grenfell or any combination be a delight . in st trinians we get a double dose of sims play two role with that hilarious disdain he constantly let ripple across his face . joyce grenfell a ruby gate ( oh dear . that name . ) play her jolly hockey stick constable incognito to hilarious perfection . possibly the best laugh come from george cole a flash harry ( who come out of a bush when whistle at ) and various visit to classroom by ms fritton ( sims ) react to explosion ( oh poor betty . ) or science lab gin production ( just send a few bottle of that up to my room ) . every part of the film be funny from the character and their costume the antic and the setting . there be sequel but the first three be the best represent include this one and blue murder at st trinians and later in color the great st trinians train robbery .