Concept    From 1951 

LEO - Lyons Electronic Office

Categories: Commerce, Science

The world's first business computer was built and operated by J. Lyons & Co.

The LEO website provides:
In October 1947, the directors of J. Lyons & Company, a British catering company famous for its teashops but with strong interests in new office management techniques, decided to take an active role in promoting the commercial development of computers and build their own digital computer. In 1951 the LEO I computer was operational and ran the world's first regular routine office computer job. The company LEO Computers Ltd was formed in 1954 and went on to build Leo II and Leo III computers. LEO II computers were installed in many British offices, including Ford Motor Company, British Oxygen Company and the 'clerical factory' of the Ministry of Pensions & National Insurance at Newcastle. LEO lll computers were installed in Customs & Excise, Inland Revenue, The Post Office and in Australia, South Africa and Czechoslovakia. LEO Computers Ltd merged with the computer interests of English Electric in 1963 to form English Electric LEO, and later, English Electric Leo Marconi (EELM). Subsequent mergers eventually found LEO incorporated into ICL in 1968, whilst the Bureau operation, based at Hartree House, combined with Barclays to form Baric.

Hartree House occupied the upper floors of the Whiteley department store in Queensway and, following his death, was named for Douglas Hartree, a scientist who helped develop LEO.

Comments are provided by Facebook, please ensure you are signed in here to see them

This section lists the memorials where the subject on this page is commemorated:
LEO - Lyons Electronic Office

Commemorated ati

LEO - world's first business computer

Here's the video of the unveiling timed to commemorate 65 years of LEO. We be...

Read More

Other Subjects

Smithfield Fish Market opened

Smithfield Fish Market opened

Thanks to (C) Peter Gregson for the picture.

Event, Commerce, Food & Drink

1 memorial
Salmon & Gluckstein

Salmon & Gluckstein

Tobacco retailer which become the largest tobacco sellers in the UK, with over 140 retail outlets. Samuel Gluckstein (1821-73) was born in Rheinberg, Prussia (now Germany) on 4 January 1821, the s...

Group, Commerce

1 memorial
Black Bull Inn, Holborn

Black Bull Inn, Holborn

Located at 122 Holborn, at the junction with Leather Lane, and dating from at least 1697. This inn was demolished in 1904 to make room for an extension to the department store Gamages, who occupied...

Building, Commerce, Food & Drink

1 memorial
Sun Fire Office

Sun Fire Office

Founded in London, now the oldest existing insurance company in the world.

Group, Commerce

1 memorial

Previously viewed

Henry Harley
War dead, WW1
1 memorial