Cierva C.19 Mk IVP G-ABUF was used to oversee Derby Day traffic on May 31, 1933. This photograph was taken at Brooklands on July 24, 1932 during a take-off and landing competition during which contestants were required to take off with the shortest possible run, climb to 1,000ft in the shortest time, stop the engine and glide down to a mark on the ground, taking as long as possible over the glide, touching the aerodrome as near this mark as possible and landing with the shortest run possible. R. A. C. Brie, the pilot of the C.19, came second.

Самолёты на фотографии: Aircrafts on the photo: Cierva/Avro C.19 - ВеликобританияUnited Kingdom - 1929

Derby Day 1932. Sidney Chamberlain in the front cockpit and Ralph Allen in the rear of a Cierva C.19.

Самолёты на фотографии: Aircrafts on the photo: Cierva/Avro C.19 - ВеликобританияUnited Kingdom - 1929

Flt Lt Allen over Teddington and Kingston on his way to observe the traffic over Epsom on June 1, 1932 in Cierva C.19 Mk IV G-ABUD, owned by the Autogiro Flying School at Hanworth.

Самолёты на фотографии: Aircrafts on the photo: Cierva/Avro C.19 - ВеликобританияUnited Kingdom - 1929

Cierva C.30P G-ACIN was used by the Metropolitan Police for trials in 1934.

Самолёты на фотографии: Aircrafts on the photo: Cierva/Avro C.30A / Rota - ВеликобританияUnited Kingdom - 1932

Cierva C.30A G-ACWZ, operated by the Redhill Flying Club from 1935, was used for keeping an eye on Derby Day traffic in 1936.

Самолёты на фотографии: Aircrafts on the photo: Cierva/Avro C.30A / Rota - ВеликобританияUnited Kingdom - 1932

In 1938 the Metropolitan Police borrowed Cierva C.30A G-ACWR for more observation work.

Самолёты на фотографии: Aircrafts on the photo: Cierva/Avro C.30A / Rota - ВеликобританияUnited Kingdom - 1932

Whereas observation and photography from the Cierva C.19 was restricted by the stub wings and the position of the rotor pylon, the C.30 offered a clearer view of the ground and was far better suited to police observation work.

Самолёты на фотографии: Aircrafts on the photo: Cierva/Avro C.30A / Rota - ВеликобританияUnited Kingdom - 1932

1934 photograph of the Marconi radio equipment fitted experimentally in a Cierva C.30. Though described as being “specially compact and light”, it weighed 70lb including batteries and accessories.

Самолёты на фотографии: Aircrafts on the photo: Cierva/Avro C.30A / Rota - ВеликобританияUnited Kingdom - 1932

Contemporary cartoon strip speculating on the future role of police Autogiro observation.

Самолёты на фотографии: Aircrafts on the photo: Cierva/Avro C.30A / Rota - ВеликобританияUnited Kingdom - 1932