Lion was a weekly British comics periodical published by Fleetway (a subsidiary of IPC, the International Publishing Corporation) from 23 February 1952 to 18 May 1974. It lasted for 1,156 issues.
These are in comic book format (CBR & CBZ)
PC software is included on the disc.
You can also read them on your tablet with apps for Android and Ipad available.
These formats are just RAR (CBR) and ZIP (CBZ) files they can be unzipped with 7zip (free software).
Once unzipped each page is in JPG format.