IWM caption: "An air gunner climbs into a Boulton Paul Defiant of No. 264 Squadron, July 1940." Source: IWM (HU 104495)
According to Micael Bevan on FB is the gunner wearing the integrated parachute harness.
Taken from my FB page,greetz brummbar
Btw,it looks like the problems from last week concerning the comments page are resolved,at least for me and for now :)

Defiant gunner

The evacuation of British Expeditionary Forces from Dunkirk.  
Soldiers fire at German aircraft while bombs explode out at sea.    

Operation Dynamo

British pilots in response to an alert, running to their American-made Curtiss P-40  (Kittyhawk) fighters at an airfield in North Africa. 1941 - 1942.