Temperamental eccentric Gilbert Herring, the school's head of music, has organized the annual student concert in the Swimming Hall for ten years with little support from his colleagues. When Laurence's overzealous attempts to lend a hand bring about abysmal results and drive Herring to hand in his resignation, the concert promises to go far from swimmingly. But with a little further assistance from Laurence, the evening may yet make a big splash.

• Paul Smith

• Timothy Bateson
• Nicholas Woodeson
• Peter Woodthorpe