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LEO Computers commemorative plaque unveiled

Commemorative plinth unveiled in Lyons Walk in the Borough of Hammersmith and Fulham, London, a site overlooking the place once occupied by Cadby Hall, the headquarters of J. Lyons & Co and the location of the world’s first business computer LEO. 

The unveiling took place exactly 65 years after LEO carried out, on behalf of Lyons, the running of the world’s first data processing application on an electronic computer. The unveiling was carried out jointly by Dame Stephanie Shirley and Frank Land in the presence of representatives of the Borough of Hammersmith and Fulham, representatives of the local MP, Andrew Slaughter, descendants of the families which had built J. Lyons & Co., members of the LEO Computers Society and friends of LEO including representatives of the Association for Information Technology. The erection of the plinth was arranged by the Borough of Hammersmith and Fulham and much of the funding provided by Tony Morgan of the LEO Computers Society. 

Click on the play button above to view a film of the ceremony, including speeches by Peter Byford, a representative of the Borough of Hammersmith and Fulham, Frank Land, Dame Stephanie Shirley, and Tony Morgan.

The Sunday Times carried an op-ed article by Dominic Lawson following the ceremony, entitled 65 years ago the age of the computer began ….. to sell a better tea cake, page 24, 4th December 2016. To view the article, click on the following link :
External Link : Click Here >>>

Date : 29th November 2016

This exhibit has a reference ID of CH50805. Please quote this reference ID in any communication with the Centre for Computing History.

The video above may be subject to copyright of the original author and is present only on this website for non-profit educational purposes only. If you are the original copyright owner and wish to have the media removed from this website please contact us using the relevant contact email address listed on our contact page.

Date Event
1951 LEO I computer became operational
May 1957 LEO II Installed
1961 LEO III completed in 1961
1977 The RCA CDP1802 microprocessor was used in the Galileo spacecraft
11 Nov 2017
1999 AIS LEO Award for Exceptional Lifetime Achievement in Information Systems





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