An unusual structure in flint and green stone. Three big round gables and an octagonal pyramid roof. The doorway has a big rounded hood. 1903-4 by E.S. Prior.

The recent modern extension is a combination of zinc cladding, glass and yellow brick. The three staggered pavilions of yellow brick are dressed with creamy yellow oolitic limestone. The plan of the pavilions is lozenge-shaped rather than square to avoid right angles for acoustic purposes. There are butterfly roof-lights over the top floor ensemble rooms. Circulation areas and stores (also without right angles) separate the pavilions, further improving the acoustics.