Just beat me to it!.......
From Putnam's 'Hawker' :-
Designed to specification 37/22 and appearing in 1924 the Hawker Hedgehog was a 3-seat
fleet reconnaissance aircraft of fabric covered wooden construction. Engine was a Bristol
Jupiter IV radial. A novel feature on the aircraft was landing flaps on all four wings, along
with drooping ailerons.
In September 1924, the Hedgehog went to Martlesham Heath for Service Trials, which were
successful. However, the Air Ministry decided that it's performance was not sufficiently advanced
over the aircraft currently in service, and the requirement was cancelled. However, the aircraft
was purchased, and returned to Martlesham Heath for further trials with the drooping ailerons.
The aircraft's serial was N187.
"During June 1925 floats were substituted for the wheel undercarriage and N187 spent a short
period at Felixstowe (the Marine Aircraft Establishment, MAE). While at the MAE an amphibian
undercarriage was incorporated, and is believed that it was during tests on this that the
aircraft was wrecked and subsequently written off."
Span 40' 0 1/2", Length 30' 8 3/4", Height 12' 6", Wing area 480.7 sq ft.
cheers,
Robin.