The Type E, with four 0.303-in Brownings, the tail turret for the Halifax and British Liberators.

Самолёты на фотографии: Aircrafts on the photo: Consolidated B-24 Liberator - СШАUSA - 1939Handley Page Halifax / H.P.57 - ВеликобританияUnited Kingdom - 1939

The BA and BB barbettes installed in Lancaster LL780/G at Cosford in 1946, after the system had been cancelled

Самолёты на фотографии: Aircrafts on the photo: Avro Lancaster / Type 683 - ВеликобританияUnited Kingdom - 1941

The BPA Type A four-gun turret in Blackburn Roc L3084. All 136 Rocs were built by Boulton Paul Aircraft at Pendeford

Самолёты на фотографии: Aircrafts on the photo: Blackburn Roc / B-25 - ВеликобританияUnited Kingdom - 1938

Boulton Paul's first turret, the pneumatic nose turret for the Overstrand, with the single Lewis gun in the upper stowed position

Самолёты на фотографии: Aircrafts on the photo: Boulton Paul Overstrand / P.75 - ВеликобританияUnited Kingdom - 1933

A Type C twin 0.303-in turret installed in a Halifax

Самолёты на фотографии: Aircrafts on the photo: Handley Page Halifax / H.P.57 - ВеликобританияUnited Kingdom - 1939

The Type T twin 0.50-in dorsal turret installed for testing in Halifax R9436 in June 1942. This was the only one of the turrets designed for production in America which was actually built and fully tested before cancellation.

Самолёты на фотографии: Aircrafts on the photo: Handley Page Halifax / H.P.57 - ВеликобританияUnited Kingdom - 1939

A Type D turret complete with AGLT scanner installed in a Halifax at Cosford in February 1944

Самолёты на фотографии: Aircrafts on the photo: Handley Page Halifax / H.P.57 - ВеликобританияUnited Kingdom - 1939

The Type K electrically-retracted under-turret, without guns and cupola, for the Halifax and Albemarle.

Самолёты на фотографии: Aircrafts on the photo: Armstrong Whitworth Albemarle / A.W.41 - ВеликобританияUnited Kingdom - 1940Handley Page Halifax / H.P.57 - ВеликобританияUnited Kingdom - 1939

Lockheed Hudson N7251 at Pendeford in 1939 after fitment of its Boulton Paul C Mk IIA turret on March 4, 1940; in the background is Hudson N7244, which crashed near Leuchars on August 23, 1940, while N7251 became instructional airframe 4266M in October 1943.

Самолёты на фотографии: Aircrafts on the photo: Lockheed Hudson A-28 / A-29 - СШАUSA - 1938

After years of work, the first and only Boulton Paul cannon turret to go into production was this Type N mounting for the Shackleton, an offensive rather than a defensive installation

Самолёты на фотографии: Aircrafts on the photo: Avro Shackleton / Type 696 - ВеликобританияUnited Kingdom - 1949