Acorn / Viglen BBC Model B

This is a BBC Model B which has been put into an aftermarket case. This was quite a popular thing to do in the 1980s because it allowed the keyboard to be separate from the main unit, and integrated the floppy drive(s) in a neat and "professional" style. In practice the case build quality is quite cheap (for example, the main unit re-uses the original bottom half of the BBC case). Note that the machine also has an AMX mouse. This was a popular add-on for BBC machines in 1985-1986 as it allowed users to experience the latest style of graphical user interface, as seen on much more expensive machines.