Mainstay of Bomber Command was the Whitley, which first entered service in March 1937 with 10 Sqn.

Самолёты на фотографии: Aircrafts on the photo: Armstrong Whitworth Whitley / A.W.38 - ВеликобританияUnited Kingdom - 1936

STRIKING POWER. Handley Page Hampden bombers of a type which composes a large portion of our bomber force. Although in service in large numbers the Hampden is still among the most efficient bombers in the world.
Last of the twin-engined bombers to go into RAF service during the expansion was the Handley Page Hampden bomber.

Самолёты на фотографии: Aircrafts on the photo: Handley Page Hampden / H.P.52 - ВеликобританияUnited Kingdom - 1936

"Энсоны" 217-й эскадрильи в полете.
Avro Anson reconnaissance machines of the R.A.F. The Anson has prepared the way for the adoption of more powerful machines for coastal defence duties.
Photograph, taken by Charles E. Brown, depicts Anson Is of 217 Sqn, a general reconnaissance unit formed at Boscombe Down in March 1937, and based at St Eval until the war, patrolling the Western Approaches.

Самолёты на фотографии: Aircrafts on the photo: Avro Anson / Type 652 - ВеликобританияUnited Kingdom - 1935

Vickers Vildebeests of 42 Squadron. The type was the RAF's only torpedo bomber at the outbreak of war.

Самолёты на фотографии: Aircrafts on the photo: Vickers Vildebeest / Type 132 - ВеликобританияUnited Kingdom - 1928