Was the Pintail's unusual tail shaped to clear its rear guns?

Was the Fairey Pintail's tail shaped that way to give its rear gun a clear field of fire?

Possibly: the Pintail did carry rear-mounted Lewis guns, and the tail arrangement helped keep them clear, though the exchange does not prove that this was the original design reason.

An audience member asks whether the Pintail's unusual tail was shaped for tail gunnery. An initial doubt gives way to a check showing a fixed forward Vickers gun plus one or two Lewis guns on a mounting in the rear cockpit. The arrangement would at least help prevent the rear gunner from shooting away the aircraft's own tail. The exchange supports armament clearance as a practical benefit while stopping short of proving that it drove the original design.