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The National Museum of Computing (TNMOC)

MK3 6EB Bletchley, Milton Keynes, Great Britain (UK) (Borough of Milton Keynes)

Address Block H, Bletchley Park
Floor area unfortunately not known yet  
Museum typ Exhibition
Computer / Informatic
  • Typewriter, calculating and coding
  • Clocks and Watches
  • Telephone / Telex
  • Morse technology
  • Amateur Radio / Military & Industry Radio

Opening times
Tuesday - Sunday: 10:30am - 5pm

Status from 05/2019
Adults: £7.50; Concessions & Children aged 5-16: £5.00

Tel.:+44-19 08-37 47 08  eMail:lin.jones  


Our page for The National Museum of Computing (TNMOC) in Bletchley, Milton Keynes, Great Britain (UK), is administrated by member Heribert Jung. Please write to him about your experience with this museum, for corrections of our data or sending photos by using the Contact Form to the Museum Finder.

Location / Directions
N51.998500° W0.743700°N51°59.91000' W0°44.62200'N51°59'54.6000" W0°44'37.3200"

By Rail

Fast efficient service to Bletchley Railway Station from:

London Euston, Milton Keynes Central (for InterCity connections), Coventry and Birmingham New Street. Bedford Midland (except Sunday) for connections to London Thames Link, East Midlands and South Yorkshire.

For rail enquiries, including dates that maybe affected by disruption due to engineering works and service alterations, please contact

By Bus

There are buses and coaches from all parts of Milton Keynes and beyond, arriving at Bletchley Bus Station. On leaving the Bus Station head towards the Railway Station and take the footpath to Bletchley Park, opposite the station entrance.

SatNav For Satellite Navigation users please use the postcode for the railway station (MK3 6DS) and follow the signs.

Some example tube pages for sets you can see there:

Thyratron CV1128
Vacuum Pentode EF37A (1942)
Thyratron GT1C
Transmitting Triode, air 4316A
Triode, vacuum 6J5GT (1939)


Operates independend from Bletchley Park - Home of the Codebreakers.

Wikipedia 12/2011:

The National Museum of Computing is a museum in the United Kingdom dedicated to collecting and restoring historic computer systems. The museum is based at Bletchley Park in Buckinghamshire, England, and opened in 2007. The building — Block H — was the first purpose-built computer centre in the world, hosting six Colossus computers by the end of World War II.

The museum houses a rebuilt Colossus computer alongside an exhibition of the most complex code cracking activities performed at the Park, along with examples of machines continuing the history of the development of computing from the 1940s to the present day. The museum has a policy of having as many of the exhibits as possible in full working order.


On display in the museum are many famous early computing era machines, including a reconstructed Colossus Mark 2, a machine that helped break German encryption during World War II.The Colossus rebuild project and related machines are open to visitors seven days a week.

In 1994, a team led by Tony Sale began a reconstruction of a Colossus Mark 2 computer at Bletchley Park. Here, in 2006, Sale supervises the breaking of an enciphered message with the completed machine.The museum includes machines from the 1960s such as the Elliott 803 and 905, an ICL 2966 mainframe from the 1980s, a wide range of analogue computers, a hands-on retrocomputing gallery, and several restoration projects such as the PDP-8 and the PDP-11-based air traffic control system from London Terminal Control Centre at West Drayton near London. Further exhibits include mechanical and electronic calculators, a history of slide rules, and a personal computing gallery with ten hands-on machines.

Another area includes a range of electro-mechanical punched card machines. At the end of 2009, an Internet gallery, sponsored by the National Physical Laboratory where packet switching was first developed, was opened, along with a shop and an education room.


It is fully open to the public every Thursday and Saturday afternoon and most bank holidays, and by appointment for groups only at other times. There is a modest admission charge to the museum to help cover overheads (including rent). presents here one of the many museum pages. We try to bring data for your direct information about all that is relevant. In the list (link above right) you find the complete listing of museums related to "Radio & Co." we have information of. Please help us to be complete and up to date by using the contact form above.