Ask the Experts | How many codebreaking machines were built? @tnmoc
Ask the Experts | How many codebreaking machines were built?  @tnmoc
Uploaded July 2020 | Updated September 2026, 1 day ago
The National Museum of Computing at Bletchley Park houses a unique collection of computers. Our expert team have maintained, restored and rebuilt some of the most important systems in Britain's business, war-time and personal computing history.

You can't see our amazing collection during Covid-19, but you can speak to the experts who'd usually be on hand in our galleries as TNMOC is running a series of online video Q&As.

In this video Peter Hoath answers a question about how many machines there were at Bletchley Park involved in codebreaking.

To ask a question, please do so on Twitter using the #askTNMOC hashtag.

If you would like to support us through these challenging times, please consider purchasing some our of special merchandise at our online shop tnmoc.org/tnmocshop
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Ask the Experts | How many codebreaking machines were built?

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