   Aircopta (?) Auster B9 BAE Systems Ampersand Bevan helicopter Bird Gyrocopter Blackburn SP.60 Blackburn SP.62
Avro-Cierva C.9 / Type 576 Avro-Cierva C.9 / Type 581 Short-Cierva C.13 / 31/26 Cierva C.14 * Cierva C.15 Cierva C.16 * Cierva C.18 (Weymann-Lepère C.18) Cierva C.20 (Focke-Wulf C 19 "Heuschrecke") Cierva C.21 (Lioré et Olivier C.21) Avro-Cierva C.22 / Type 665 (?) Cierva C.23 Cierva C.26 (?) Cierva C.28 Cierva C.29 (Westland-Cierva C.29) Cierva C.31 Cierva C.32 Cierva C.34 (Lioré-et-Olivier / SNCASE C.34) Cierva C.35 Cierva C.36 Cierva C.38 Cierva C.39 / S.22/38 Cierva W.14 "Skeeter" (Saunders-Roe W.14 "Skeeter") Davies "Helipede" GFS Projects Flying Saucer GFS Projects GFS-7 Griffiths G.H.4 Gyroplane Houston Gyroplane
Kestrel Aerospace Kestrel UAV Kestrel Aerospace Lancer Layzell "Merlin"
Stacey Pedalcopter VTOL Technologies Aerial Police Dog
Wright-Capone helicopter No.1 Wright-Capone helicopter No.2 Wright-Capone helicopter No.3
* The Cierva C.14 and C.16 are in fact unknown designs. According to Stéphane, no details have survived as to what these projects actually were, so I cannot properly verify if they were rotorcraft or not.
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