3c:I[5500,["/_next/static/chunks/08z4tkzvltetr.js","/_next/static/chunks/121~yigv24_j6.js","/_next/static/chunks/0a~e7k..h6jfc.js","/_next/static/chunks/0za7dr7c2y81~.js","/_next/static/chunks/03klviw01y.ih.js","/_next/static/chunks/0gx_3vy1-syt4.js","/_next/static/chunks/0i6hzvr84kc1r.js"],"Image"] 3d:I[185,["/_next/static/chunks/08z4tkzvltetr.js","/_next/static/chunks/121~yigv24_j6.js","/_next/static/chunks/0a~e7k..h6jfc.js","/_next/static/chunks/0za7dr7c2y81~.js","/_next/static/chunks/03klviw01y.ih.js","/_next/static/chunks/0gx_3vy1-syt4.js","/_next/static/chunks/0i6hzvr84kc1r.js"],"SendEmailButton"] 45:I[27201,["/_next/static/chunks/01xlw8hd842-c.js","/_next/static/chunks/0d3shmwh5_nmn.js"],"IconMark"] 3b:T406,{"@context":"https://schema.org","@type":"PodcastEpisode","name":"E184 - The SIS at BP","description":"October 2025\n\nToday 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.\n\nIn 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,","image":"https://audioboom.com/i/43137616/s=1400x1400/el=1/rt=fill.jpg","url":"https://pod.wave.co/podcast/bletchley-park/e184-the-sis-at-bp","partOfSeries":{"@type":"PodcastSeries","name":"Bletchley Park","url":"https://pod.wave.co/podcast/bletchley-park"},"provider":{"@type":"Organization","name":"Wave AI Podcast Notes","url":"https://pod.wave.co"},"datePublished":"2025-10-24T00:00:00.000Z","timeRequired":"PT1H36S"}3e:T48c,

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,