Computer ◆ Conservation ◆ Society

Just some of the machines and systems being restored to working order by the Computer Conservation Society.


Next Events

The Unknown Alan Turing
November 15th 2016 - Manchester

Sale Award Ceremony + Presentation from the Winner
November 17nd 2016 - London

See events page for more information


Historic Document Rescue

From time to time the Society is approached by people who have come into the possession of documents relevant to historic computers and who feel that they should “go to a good home”.

Unfortunately the Computer Conservation Society is no longer in a position to collect such material, though we can often suggest a suitable home for it. If you have a need to dispose of historic material we suggest that you should first read our guide Archives and your Personal Papers.

In particular, we should stress that a list of the document titles is essential before any progress can be made.

October 2016

TNMoC Member’s Christmas Social

will be held immediately following the November CCS meeting at The Mad Hatter in Stamford Street (near the junction with Blackfriars Bridge). CCS members who are not members of TNMoC are also welcome. The details are:

Thursday 17th November 2016 from 16:30 till 21:00.

We have a private room booked for the event. There will be a selection of canapés served at 18:00.

15 for each member or guest, payable in advance please:

  • By PayPal to (you do NOT need to register for PayPal).
  • Or you may use bank transfer to sort code 40-47-86 account 11419110
  • Or pay in advance by personal cheque

In all cases, please email Doug Neilson to say how you have booked

For your convenience, the RV1 bus plies a somewhat serpentine route from the end of Exeter Street (back door of the BCS) to The Mad Hatter taking a leisurely 41 minutes so to do. You could walk it in 26 minutes but you would miss the opportunity to pass by the site of the first headquarters of the British Tabulating Machine Company. A pint awaits the first person to point it out as we pass by, otherwise you’re buying!


News headlines

October 2016

Strachey Centenary

This November marks 100 years since the birth of Christopher Strachey. The University of Oxford is holding a symposium to celebrate his life and research in Oxford on Saturday 19th November. There will also be an exhibition of material from the Strachey archive on Friday 18th November, followed by a banquet dinner at Hertford College on the evening of Friday 18th November.

For more information and to register for attendance, please go to

Christopher Strachey (1916-1975) was a pioneering computer scientist and the founder of the Programming Research Group, now part of the Department of Computer Science at Oxford University. Although Strachey was keenly interested in the practical aspects of computing, it is in the theoretical side that he most indelibly left his mark, notably by creating with Dana Scott the denotational (or as he called it, ‘mathematical’) approach to defining the semantics of programming languages. Strachey also spent time writing complex programs and puzzles for various computers, such as a draughts playing program for the Pilot ACE in 1951. He developed some fundamental concepts of machine-independent operating systems, including an early suggestion for time-sharing, and was a prime mover in the influential CPL programming language. Strachey came from a notable family of intellectuals and artists, perhaps most famous for Christopher’s uncle Lytton, a writer and member of the Bloomsbury group.

We will be marking the occasion of 100 years since Christopher Strachey’s birth on Saturday 19th November 2016, three days after his birthday, with a symposium of invited speakers. The morning will look back at Strachey’s life and works from a historical and technical perspective, and the afternoon will concern the future of Strachey-inspired theoretical computer science at Oxford University. There will also be a display of related archival material on Friday 18th November for anyone interested, and a banquet dinner at Hertford College on the evening of Friday 18th November.

June 2016

Pegasus at the V&A

The Computer Conservation Society has, until recently, been working with the London Science Museum and the Museum of Science and Industry in Manchester on the Pegasus computers which each of these institutions own. Sadly both these projects have had to be halted for want of museum resources. You might wonder what has happened to these two historic machines.

The Science Museum Pegasus has gone into store and there are at present, no plans to exhibit it again.

The Manchester machine has been lent to the Victoria & Albert Museum (just accross the road from the Science Museum — the irony is not lost on us) to be a part of Engineering the World: Ove Arup and the Philosophy of Total Design a new exhibition which runs until the 6th of November.

It is understood that Ove Arup used a Pegasus (not the same one) to help design the Sydney Opera House.


Founded in 1989, the Computer Conservation Society is a joint venture between the British Computer Society, the Science Museum and the Museum of Science and Industry in Manchester.

Our primary mission is to preserve historic computers, develop awareness of the history of computing, and encourage research. We run many specialised projects, organise public lecture series, and publish a regular bulletin.

Membership of the society is open to all.
If you would like to join the society, please click here for more information.