Bletchley Park

November 2025

During the second half of World War 2, the Allied air forces launched a large-scale heavy bomber offensive against German cities and war industries. This was designed to damage Germany's ability and will to continue the war. It also represented a way for Britain and the USA to support the Soviet Union before the D-Day invasion. The whole campaign was guided by intelligence, to identify the right targets, determine how badly they were damaged, and assess the effects on the German war effort.

This huge undertaking taxed Allied intelligence capabilities to their limits. It has since become one of the many contended issues in the debates around this costly and controversial campaign.

In this 'It Happened Here' episode, we are joined by Research Officer Dr Thomas Cheetham to explain the ways Signals Intelligence from Bletchley Park did - and didn't - guide Allied bombing strategy.

Our thanks go to Owen Moogan and Sarah Langston for voicing our historical documents.

Image: © National Museum of the US Air Force (Public Domain)

This episode is a follow up to episodes E170 & E171.

#BPark, #Bletchleypark, #WW2, #Enigma, #BomberCommand, #USAAF,

October 2025

Today GCHQ is an independent British intelligence organisation. However during World War 2, GC&CS, as it was then called, continued to be subordinate to the British Secret Intelligence Service, known as SIS or MI6. The Chief of SIS was also the Director of GC&CS.

In this episode, we explore the relationship between the two organisations, the part that SIS played in supporting GC&CS, and the ongoing presence of SIS at Bletchley Park itself. Head of Content, Erica Munro, is joined by our Research Historian, Dr David Kenyon, and by a special guest - historian and expert on the wartime history of SIS, Dr Claire Hubbard-Hall.

To see the objects we discuss in this episode, visit https://www.bletchleypark.org.uk/our-story/e184-the-sis-at-bletchley-park/ 

Claire’s book ‘Her Secret Service: The Forgotten Women of British Intelligence’ is available from all good bookshops.

Image: ©Bletchley Park Trust 2025

#BPark, #Bletchleypark, #WW2, #Enigma, #MI6, #SIS, #SecretService,

September 2025

In 1945, Britain celebrated VE Day in May and VJ Day in August, as the war - first in Europe and then the Far East - came to an end. For the staff of GC&CS and its larger worldwide network, this meant that the vital and exhausting work they'd been doing suddenly stopped. The lives of all of them had been changed forever, but each person's experience was different.

Bletchley Park's Oral History archive is a treasure trove of Veterans' testimonies. In this It Happened Here episode, we will be digging into our sound archive to focus on how the workers reacted and what happened to them once peace was declared, in their own words. Our guide through these stories is Bletchley Park’s Research Historian Dr David Kenyon.

This episode features the following Veterans’.

Nora Copleston
Miriam Myland
Mary Kenyon
Ron Unwin
Betty Lawrie
John Statham
Betty Flavell
Fay Gold
Joan Smeaton
Gwen Page
Dot Tuffin
Kenneth Nicholson
John Moseley
Jimmy Thirsk
Rena Stewart
Mary Every
Daphne Canning
Betty Webb
Lady Marion Body
Margaret Thomas

Image: ©Bletchley Park Trust 2025

#BPark, #Bletchleypark, #WW2, #Enigma, #VEDay80, #VJDay80,

August 2025

On 15 August 2025 the UK commemorated the 80th anniversary of VJ Day, the day on which the surrender of Japan and the end of World War Two was announced.

This was a significant moment at Bletchley Park as it meant the end of almost six years of non-stop codebreaking and intelligence work.

For many it also brought an abrupt halt to years of training to learn Japanese and long journeys to reach postings in India, Sri Lanka and elsewhere in preparation for the upcoming invasion of Japan itself.

In this ‘It Happened Here’ episode we are joined by Bletchley Park’s historians Dr Tom Cheetham and Dr David Kenyon to discuss how the Japanese war ended and the part played by Bletchley Park and signals intelligence.

Our thanks go to Owen Moogan and Dr Ben Thompson for voicing our historical documents.

Image: Japanese surrender aboard the USS Missouri. Public Domain, United States Navy.

#BPark, #Bletchleypark, #WW2, #Enigma, #VJDay80,

July 2025

By late 1944, the tide had turned against the Japanese in south-east Asia, with the repulse of their attempted invasion of India. However, the multi-national Allied forces in Burma still faced enormous challenges if they were to retain the initiative, and push the enemy out of the country.

Every mile travelled from their supply bases, across barely-navigable expanses of jungle and mountain, exposed Allied troops to greater difficulties and risk of starvation and destruction. It was a struggle against the terrain and a race against time to liberate Burma before the arrival of the monsoon. In this struggle, intelligence and deception were essential weapons in the Allied arsenal.

In this It Happened Here episode, Head of Audiences and Programmes Vicki Pipe is joined by Research Officer Dr Thomas Cheetham to explore the 1945 battles for Burma and the race to Rangoon which formed the climax of Britain’s war against Japan.

This episode features Veteran’s Eric Rhodes, Roy Buckmaster and Dennis Underwood, from our Oral History archive.

Our thanks go to Owen Moogan and Dr Ben Thompson for voicing our historical documents.

Image: Oil painting of General William Slim, 1st Viscount Slim.

#BPark, #Bletchleypark, #WW2, #Enigma, #14thArmy,

June 2025

In May 1945 the Royal Navy fought its last surface action against the Japanese fleet, sinking the cruiser Haguro in the Mallaca Strait, off the coast of Malaya.

The successful location of the enemy ship was the result of signals intelligence. It was also a product of the sophisticated network built up by Britain, the USA and Australia after 1943 to intercept, decipher and distribute intelligence around the Pacific and Indian Oceans.

In this ‘It Happened Here’ episode, we are joined by Bletchley Park’s Research Historian Dr David Kenyon to discuss the role of the Codebreakers in this milestone on the road to ultimate victory over Japan in 1945.

This episode features Veteran Edward Simpson from our Oral History archive.

Our thanks go to Dr Ben Thompson and Owen Moogan for voicing our historical documents.

Image: Public Domain

#BPark, #Bletchleypark, #WW2, #Enigma,

May 2025

During World War Two, Bletchley Park collaborated with several external engineering institutions in developing the famous codebreaking machines, such as the Bombes and Colossus.

One such institution was the Post Office Research Station at Dollis Hill in London. In 2022, the previously secret war diary of the Research Station were released online to the public by BT, the successor to GPO Telecommunications.

In this episode we are joined by James Elder, an archivist from BT Group Archives, as well as our own Research Historian, Dr David Kenyon, to find out what information the diaries can reveal about this secret collaboration.

Many thanks to Dr Ben Thomson for voicing extracts from the War Diary.

Image: © Courtesy of BT Group Archives (TCB 473/P 5105)

#BPark, #Bletchleypark, #WW2, #Enigma, #BT, #GPO,

April 2025

To mark 80 years since the end of the war in Europe, this episode takes a closer look at four intriguing items from Bletchley Park’s collections. The team digs deeper into the stories that lie behind a mysterious message, a misunderstood photograph, a moving memo and audio of a Veteran’s memories of VE Day.

Head of Content Erica Munro meets up with Research Historian Dr David Kenyon, Research Officer Dr Thomas Cheetham and Museum Archivist Dean Annison. Plus producer Mark Cotton speaks with former WRNS Bombe Operator Ruth Bourne about her VE Day memories.

Many thanks to Dr Ben Thomson for voicing our archival documents.

To see the objects we discuss in this episode, visit www.bletchleypark.org.uk/our-story/e178-ve80/

Image: ©Bletchley Park Trust 2025

#BPark, #Bletchleypark, #WW2, #Enigma, #VEDay80,

March 2025

In 1943 there seemed to be few mysteries left unsolved for Bletchley Park. But by the middle of that year, whispers would be heard of new threats: the V-1 ‘flying bomb’ and V-2 rocket.

What began with hints of secret trials on the Baltic would grow into an investigation which would strain Allied scientific intelligence to the utmost, as well as revealing serious flaws in the operation at Bletchley Park.

But by the time ‘vengeance-weapon’ attacks against the United Kingdom began in 1944, the Allies knew what they were facing; enabling countermeasures to be put in place which, despite the immense destruction the weapons caused, likely saved thousands of lives.

In this ‘It Happened Here’ episode, Head of Audiences and Programmes Vicki Pipe is joined by Research Officer Dr Thomas Cheetham to discuss the secret weapons which represented Nazi Germany’s last-gasp attempt to turn the tide of World War Two.

This episode features Oral History recordings of WAAF Filter Officer Eileen Younghusband.

Many thanks to Dr Ben Thomson for voicing our archival documents.

Image: ©Bundesarchiv, Bild 141-1880 / CC-BY-SA 3.0

#BPark, #Bletchleypark, #WW2, #Enigma,

February 2025

Here at Bletchley Park - one of the birthplaces of modern computing – our latest temporary exhibition ‘The Age of AI’ has just opened. This new gallery explores the power and potential of AI in our everyday lives. From the 1930s origins of what we now call ‘artificial intelligence’, to the incredible (or alarming?) potential it might bring, the exhibition explores the benefits and risks of AI in our world today.

In this episode, Head of Content Erica Munro meets the team behind the exhibition’s creation. Come with us on a gallery tour with Exhibitions and Interpretation Manager Tilly Davis, and hear from experts and visitors on their impressions of what AI means to them. There’s also a deeper dive into the research and exhibition’s case studies with Content Curator Steve Swaby.

Many thanks to our contributors Dame Wendy Hall, Dr Ed Pyzer-Knapp, Professor David Leslie and our Friends of Bletchley Park exhibition preview visitors.

Image: ©Bletchley Park Trust 2025

#BPark, #Bletchleypark, #WW2, #Enigma,