A large comfortable cockpit housed the pilot under a canopy built up from single curved pieces of plexiglas.
To ensure full aileron control at high speed it was necessary to build a stiff wing with ribs at half the normal spacing with a deep laminated timber main spar.
John Nielan also had an episode with spinning, recovering at very low altitude and then continuing on a cross-country competition task.
Both aircraft were impressed by the RAF for use by ATC officers, one breaking up in flight during 1946 and the other transferred to the RAFGSA (Royal Air Force Gliding & Soaring Association) at Detling where it was scrapped in 1950, after glued joints were found to have failed.
In 1978 the blueprints were recovered from storage and a replica King Kite was built by David Jones using modern low drag wing profiles, with advice from Professor Wortmann at Akaflieg Stuttgart.