Photo: Outwivcamera (CC BY-SA 4.0)
A self-guided audio walk around Bletchley Park, where the Government Code and Cypher School worked from 1939 to 1946. From Block C past the lake to the Mansion and the Stable Yard cottages where Dilly Knox's section worked, the Polish Memorial and Hut 1, where the first bombe was tested in 1940, then the huts of the Enigma work, Hut 8 with Alan Turing's office, Huts 6 and 3 and the bombe huts 11 and 11A, where the Wrens were trained, then the brick blocks the work moved into, the radio interception story at the National Radio Centre, and Block H, home of the Colossus computers and now The National Museum of Computing. Bletchley Park and the museum in Block H charge separate admission. 21 stops, about 1.5 km on foot around the site.
21 narrations, yours to keep — no subscription, no expiry. Works offline once downloaded, and if it isn’t for you we’ll refund it.
Going somewhere with no signal? Put the guide on your home screen first, then download it from that icon while you are on wi-fi — that way you download once, and it works in airplane mode with no roaming charges. Show me the order →
Every claim in this tour traces back to a named source — excavation records, the heritage authority for the site, and the primary texts themselves. Nothing is copied from other guidebooks, and anything we can't source doesn't make the recording.
Each stop is built from OpenStreetMap · 17 features in this old town (the field-surveyed mapping database behind Apple Maps), Wikidata · 1 cross-referenced entries (peer-reviewed structured records), the heritage authority below, and the primary historical texts where they exist.
Cross-referenced against Modern excavation publications · academic peer-review.
Every sentence is checked against those sources before it is recorded. If a claim can't be traced, it doesn't make the audio.
Every tour is reviewed by a person before it goes on sale. Stop selection, the route and anything ambiguous come back to the editor for a decision, and those questions routinely send a stop back for another accuracy pass. Nothing publishes on a machine’s say-so.
Spot anything inaccurate? Email [email protected] — fixed in the next pass.
Block C, the Visitor Centre, The Lake, The Mansion, Hut 4, Hut 12, The Garages, The Stable Yard and the Cottages, Polish Memorial.
Hut 1, Hut 8, Hut 6, Hut 3, Hut 11, Hut 11A, Teleprinter Building.
Block E, Block A, Block B, National Radio Centre, Block D, Block H, The National Museum of Computing.
Where Dilly Knox's small section broke Italian naval Enigma before Matapan and the Abwehr's Enigma in 1941.
For the three Polish mathematicians who broke Enigma and handed their work to Britain and France in July 1939.
The naval Enigma hut led by Alan Turing, with a recreation of his office.
The first brick bombe hut, where the Wrens who ran the machines were trained.
The block where Huts 3, 6 and 8 moved in together in February 1943, the centre of the operation to the end of the war.
Built in 1944 for Colossus, with a working rebuild standing where Colossus number nine stood.
Tap "Start Walking Tour" and allow location access. The map shows all 21 narration points.
Follow the suggested route or explore freely. GPS tracks your position. Reach a site and the narration plays automatically.
Each site has its own narration. 21 narration points.
Narrations play when you reach each site. No buttons, no track numbers. Walk naturally — the stories find you.
Premium narration that sounds like a documentary. Warm and knowledgeable, not a textbook reading.
Every narration is drafted, cross-checked against primary sources, then passed through a second editorial pass that strips unsupported claims. Dates, names, and citations verified.
See all narration points on the map. Tap any point to hear it early or replay it later.
Every narrated point in Bletchley Park — the Codebreakers' Huts, Blocks and Mansion, each with its own narration.
Spend an hour or a full day. Skip sites, revisit favourites, take breaks. The tour adapts to you.
21 narration points, including Block C, the Visitor Centre, The Lake, The Mansion, Hut 4 and Hut 12. That is about 37 minutes of narration in all, and you walk between the stops at your own pace.
Yes. It plays in your phone’s browser as you walk: no guide, no group, no app to install and no fixed start time.
Three ways, all built in:
The map-tap option means you can stand anywhere — even at home before you travel — and play any narration. GPS just makes it hands-free while you’re actually walking the site.
No. Use the “Download for offline” button before you go, and the entire tour — audio, maps, narration text — works without any data connection. Tap-to-play and the map both work fully offline. GPS itself doesn’t need data; only the download does.
Add the icon first, then download from the icon. On iPhone a guide downloaded in Safari cannot be seen by the home screen icon, so downloading first means downloading the whole thing twice.
Putting it on your home screen — iPhone or iPad (Safari):
On Android (Chrome): tap the three-dot menu at the top right, tap Add to Home screen (some phones say Install app), then confirm. On Android either order works.
If you opened this link from inside Instagram, Facebook or Gmail, you are in that app’s built-in browser. It cannot add anything to your home screen, and a guide downloaded there is thrown away when the app closes. Open the link in Safari or Chrome first.
Two backstops. First, the map shows every site — just tap the marker for the place in front of you. Second, you can manually queue any narration even when GPS is off. The platform never assumes GPS works; it’s the convenience layer, not the gate.
The audio runs ~1½ hours total, but you walk at your own pace. 21 narration points across the site. Most visitors take 2–4 hours; some spread it over multiple visits. Once you buy it, it’s yours — there’s no expiry and no subscription. Come back next year if you like; the link in your receipt always works.
One purchase covers one device session. Most couples share earbuds and use a single phone — the audio is paced for that. If you want everyone listening on their own device, each person needs their own purchase. We do not gate sharing aggressively; we trust visitors to do the right thing.
Full refund if you never trigger a single narration on-site. Partial refund based on how far you got. See the refund policy for specifics.