Fingers Crossed for 2021 ...

2020 was the worst! COVID kept the museum closed for much of the year and a mains water pipe bursting causing a flood kept us closed for the rest. 
We're hoping to re-open in the next few months ... fingers crossed! Read More >>>

Please Donate Via Just GivingNo visitors, no workshops, no events, no school visits... no income. We know that things are tough for everyone right now, but if you can afford to help us through these tough times please donate what you can.

There's over 36,000 exhibits here! That should keep you occupied for a bit - get searching!

Or come and get involved on our social media channels ...

      Twitch  Facebook          Online Gift Shop      

Thank you.


LEOpedia is the LEO Computers Society’s guide to references and holdings related to the story of LEO.

Some items are held at the Centre for Computing History. Other entries simply contain signposts to where the material might be found.

This resource is maintained by Professor Frank Land OBE, with support from CCH as part of our HLF-funded partnership project 'Swiss Rolls, Tea & The Electronic Office: A History of LEO, the World's First Business Computer'.

If any reader knows of any other reference please let Frank Land know at

You can also view the archive catalogue of the LEO collections held here at the museum:

Help support the museum by buying from the museum shop

View all items

Founding Sponsors
redgate Google ARM Real VNC Microsoft Research
Heritage Lottery Funded
Heritage Lottery Fund
Accredited Museum