Prime Minister Stanley Baldwin, in a prophetic speech to the House of Commons in 1932, declared: “it is well for the man in the street to realise that there is no power on earth that can protect him from being bombed... the bomber will always get through.”

Throughout that decade the dreaded German Luftwaffe threatened to bring devastation to cities across Europe, including the British Isles. Consequently, the British Government was desperate to find an effective method of detection or defence and once again turned to a ‘death ray.’

In 1934 the Air Ministry set up the Committee for the Scientific Survey of Air Defence.