Unveiling Heath Robinson

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The Heath Robinson, a Second World War code-breaking machine and the inspiration for Colossus, has been reconstructed and will be launched at The National Museum of Computing on Saturday 6 April 2019.

A few tickets left:

Irene Dixon, a wartime Wren who operated Heath Robinson and Colossus, and Peter Higginson, a great nephew of W Heath Robinson after whom the machine was named, will be present and meet for the first time.

A Heath Robinson at War exhibition will open in collaboration with the Heath Robinson Museum in Pinner.

The Heath Robinson was an early attempt to automate codebreaking. It was specifically designed to tackle the hugely complex Lorenz cipher, used by Hitler and his generals to communicate strategic messages.

The complexity of the codebreaking machine resulted in its being named in honour of W Heath Robinson the illustrator, but he would never have known of this tribute because he died long before the secrecy surrounding Bletchley Park codebreaking ended.

Commissioned by the Newmanry which under Max Newman was attempting to automate codebreaking, most of Heath Robinson was built at the Telecommunications Research Establishment at Malvern. It became operational at Bletchley in June 1943 and was successful, but its limitations soon became apparent. It proved extremely difficult to keep its two tapes running in synchronisation, it required too many tape changes to tackle all but five of the Lorenz wheel patterns, it was not scalable and it required very high maintenance.

Tommy Flowers of the GPO laboratories in Dollis Hill, London, was asked if he could improve upon the Heath Robinson, but rather than modify it, Flowers proposed the development of Colossus to overcome the Heath Robinson limitations. Flowers’ use of valves in place of the synchronising tape on the Robinson was a vital breakthrough.

Even after the deployment of Colossus in February 1944, the Heath Robinson continued to be developed and used in tackling the Lorenz cipher. By the end of the war, two ‘Super Robinsons’ were operational and another two under development.

After the war, one Super Robinson went to Eastcote and was probably operational until 1950s. Further development after the war led to Colorob, a combination of Robinson and Colossus, which became operational in 1955.

Paying tribute to the volunteer engineers who reconstructed the Heath Robinson, Andrew Herbert, chair of TNMOC, said, “Like their predecessors, the reconstruction team faced many challenges, even extending to a roof leak over the reconstruction in December 2018. But after seven years, the Heath Robinson reconstruction is ready to run again, an incredible achievement, adding yet more life to the story of Lorenz codebreaking at The National Museum of Computing. Visitors can now see the original German cipher machines and ancillaries alongside working reconstructions of the whole of the deciphering process from intercept to decrypt.”

About The National Museum of Computing

The National Museum of Computing, located on Bletchley Park in Block H, one of England’s ‘irreplaceable places’, is an independent charity housing the world's largest collection of functional historic computers, including reconstructions of the wartime code-breaking Colossus and the Bombe, and the WITCH, the world's oldest working digital computer. The Museum enables visitors to follow the development of computing from the ultra-secret pioneering efforts of the 1940s through the large systems and mainframes of the 1950s, 60s and 70s, and the rise of personal computing in the 1980s and beyond.

For more information, see www.tnmoc.org and follow @tnmoc on Twitter and The National Museum of Computing on Facebook.

Media Contacts

Stephen Fleming, Palam Communications, for The National Museum of Computing
01635 299116

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