The National Museum of Computing (TNMOC) is home to the world's largest collection of working historic computers.

Follow the development of computing: from the Turing-Welchman Bombe and Colossus of the 1940s through the large systems and mainframes of the 1950s, 60s and 70s, to the rise of personal computing and the rise of mobile computing and the internet. 

Recognised as one of England’s top 100 ‘irreplaceable places’, we welcome corporate and group visits, schools and individuals from all over the world.

The National Museum of Computing is open Tuesday to Sunday (and spring/summer bank holidays) from 10.30 – 17.00.

TNMOC operates independently of Bletchley Park Trust, although we are located on the Bletchley Park Estate.

To visit us, go through the main Bletchley Park entrance, through the barrier. Walk or drive bearing left beyond the main car parks, to our separate entrance located at the top of the Park. Purchase tickets for our Museum here.

Why not plan a visit to our world leading computing museum? We are open 6 days a week and offer individual, family and annual tickets and we are easy to reach by public transport or car.

Whether you are a business organisation or a private group of friends, we tailor your group visit to fit your requirements, including time, and you will benefit from the knowledge of one of our highly experienced, trained tour guides.


Calling all investigators, why not try a bit of detective work with our new Mission:STEM family trail activity whilst exploring the museum, available daily.

Our October STEM Bytes Festival runs from Tuesday, 29th October to Sunday, 3rd November. See our large selection of technology and computing out every day for families to explore; Osmo, Cubetto, Virtual reality, Micro:bits, Electro dough kits, Augmented reality and much more

Also check out Nibbles - computer science fun for families with little ones, a bookable activity on 29th and 30th October.

Tickets are now available for our very popular talks, now on Saturdays. The next one is on 26th October when we have a very interesting talk on the Apollo Guidance Computer in Light years ahead.