Model Variants (Including Prototypes)
N.10 - Initial Prototype
IIIA - Initial two-seat wheeled-based carrier model; fitted with Sunbeam Maori II engine of 260 horsepower; 50 examples produced.
IIIB - Initial three-seat floatplane derivative; fitted with Sunbeam Maori II engine of 260 horsepower; 30 produced.
IIIC - Two-seat variant with Rolls-Royce Eagle engine of 375 horsepower; 36 examples.
IIID - Two-seat version with Rolls-Royce Eagle or Rolls-Royce Napier Lion of 450 horsepower; 227 examples produced.
IIIE - Three examples produced
IIIF - Two-seat version with Napier Lion engine
IIIF I - Three-seat version; metal and wood skeleton; 55 examples.
IIIF II - Three-seat variant; metal and wood skeleton; Napier Lion XIA engine; 33 examples.
IIIF III - Three-seater; Lion XIA engine; metal skeleton with fabric skin; 291 examples.
IIIF IV - Two-seat version; 243 examples
IIIF Mk V
IIIF Mk VI
Queen IIIF - Radio-controlled gunnery trainers; three examples.
IIIM - Civilian model; three examples
F.400 - Portuguese Navy export model