Commodore Business Machines Inc. was a Canadian/U.S. based company but had an assembly plant in England. Many calculators are marked "Made in UK" on the outside, but the circuit board inside is marked "Made in Japan".
Models sold in Britain are often just marked "cbm".
Models known to have been made in Britain :-
See the page about the Commodore company on the Vintage Calculators site.
Vintage British Calculators
© Text & photographs copyright Nigel Tout 2000-2019 except where noted otherwise.