Boulton Paul Type A gun turret

An air gunner of No. 264 Squadron RAF about to enter the gun turret of his Boulton Paul Defiant Mk I at Kirton-in-Lindsey, Lincolnshire, August 1940.
An air-gunner of No. 264 Squadron RAF about to enter the gun-turret of his Boulton Paul Defiant Mark I at at Kirton-in-Lindsey, Lincolnshire. He is wearing the GQ Parasuit, supplied exclusively to Defiant gunners, which incorporates a parachute harness and life-saving jacket within a smock overall. Four .303 Browning machine-guns are mounted in the Boulton Paul power-operated turret.