The Royal Aircraft Establishment Aero Club was formed in 1922 and first flew in 1923.
The Zephyr, Hurricane and Scarab all flew.
The c/n 3 Sirocco single seat for the 1926 Lympne Light Aircraft Trials was not completed. Allocated G-EBNL, it was to be powered by a Bristol Cherub III engine.
Details on c/n 4 are not known.