The Slingsby T.21 glider first flew in 1944 and was named Sedbergh by the RAF after a public school in Sedbergh, Cumbria. This example served with the Air Cadets from 1949 until 1986 when it was sold to a German civilian. It remains under British registry in the British Gliding Association register.

Nice glider seen at its home base. This side-by-side two-seater glider with open cockpit was built in 1948 and delivered to the RAF on 27 Sep 1949 as WB935. It served with the Air Cadets in the UK until sold in Aug 1986. It was exported to Germany in 1994 and restored to flying condition. At the time the RAF forbade the use of "Air Cadets" titles in Germany, so owner Martin Konermann changed them to "Fair Cadets". Other than that it still carries its original markings and serial, and now forms part of the Fliegenden Museums Hahnweide.