RAF Photographic Reconnaissance Unit

Jim Shannon Excerpts

Thursday 17th July 2025 Westminster Hall

[Jim Shannon (Strangford) (DUP)]

It is pleasure to serve under your chairship, Ms Vaz. I thank the hon. Member for Carlisle (Ms Minns) for affording us all the opportunity to recognise a wonderful part of this nation’s history. It is a real pleasure to see the Minister in his place. He is held in high esteem by all hon. Members—not to put any pressure on the answers that he will give shortly. I say that in jest.

It is a great pleasure to speak about the extraordinary role of the RAF Photographic Reconnaissance Unit during the second world war—a unit whose daring missions and critical intelligence gathering were pivotal to the allied victory. The PRU’s pilots, who flew unarmed planes into enemy skies, showed a bravery that reminds us of the men of the merchant navy, who manned unarmed ships through dangerous waters.

In 1940, the RAF PRU rose from Sidney Cotton’s civilian Heston Flight, officially becoming the No. 1 Photographic Reconnaissance Unit in November 1940. It was tasked with capturing high-resolution aerial photos of enemy territory. We have to consider what that means—it means it operated with little or no protection. The PRU became our eyes in the sky.

The pilots would fly modified, unarmed aircraft, such as Spitfires and Mosquitoes, at incredible speeds and altitudes of 44,000 feet, evading enemy detection to gather intelligence. The images meticulously analysed by the RAF Medmenham’s allied central interpretation unit revealed German secrets from rocket programmes to fortified defences. In 1943, the PRU’s reconnaissance over Peenemünde revealed Germany’s V1 and V2 rocket development, prompting Operation Hydra, a bombing raid that delayed the use of those weapons by months, potentially saving countless lives.

For D-day in 1944, the PRU’s 85,000 daily images mapped the Atlantic wall, enabling precision planning for the Normandy invasion. It is impossible to overstate the courage demanded for these missions. Just like the merchant navy, whose crews worked mostly on unarmed ships, braving U-boat-infested waters to deliver vital supplies, the PRU pilots flew unarmed planes in skies heavy with Luftwaffe fighters.

Tragically, the PRU suffered the highest casualty rate of any RAF unit. Pilots such as Wing Commander Adrian Warburton, a daring pilot who on 11 November 1940 flew a recon mission over a huge flight of Italian battleships in Taranto harbour, not far from Malta—flying so low he could almost reach out and touch the vessels, and was very aware of their painted names. He was shot down in April 1944. His remains were not discovered until 2002 in a field in Bavaria, around 30 miles west of Munich, still strapped in his plane’s cockpit.

The PRU’s strength was supported by pilots and bases around the Commonwealth and beyond. I am very proud to say that Northern Ireland had a role to play in that, with a vital RAF hub supporting the PRU at airfields in Aldergrove and Limavady, which were key locations for Coastal Command operations until 1942.

The Commonwealth’s role in the PRU was significant thanks to the Canadian, Australian and New Zealand airmen, and of course the invaluable contributions of the Polish airmen whose feats are the stuff of legend. No. 318 Polish Fighter-Reconnaissance Squadron supported reconnaissance efforts as well, and their flights over Peenemünde were critical. Polish intelligence from the Home Army provided ground-level reports that complemented PRU imagery, especially after rocket testing shifted to Blizna in Poland.

The PRU’s innovations saw techniques such as “dicing”, where pilots skimmed treetops under fire—my goodness, that makes your head spin. Night photography using the Edgerton D-2 flash system and infrared film by 1945 enabled the PRU to break enemy camouflage in darkness. Who thinks all these up? I know I could not, but those people did. Those developments, teamed with cameras like the F24 and F52, delivered precise intelligence, paving the way for today’s modern reconnaissance. They set the examples for the rest of us.

The PRU’s legacy remains firm and indisputable in the National Collection of Aerial Photography, while those brave, precious lives lost are commemorated by the Commonwealth War Graves Commission with memorials around the UK, such as at Runnymede, and also in France, Malta, Sicily, Tunisia and Singapore. That demonstrates how far their reach extended.

In conclusion—I am conscious of your time limit, Ms Vaz, which is why I am speaking at 100 mph—to those brave pilots, our eyes in the sky, especially those who lost their lives flying high-risk spying missions to secure our liberation, we owe our profound, lasting admiration, respect and gratitude. Their legacy compels us to be the keepers and guardians of their history.

[Valerie Vaz (in the Chair)]

As the hon. Members who have spoken so far have been so good with their time, other Members have a bit more time.