Re: ☹️
"We bought our Dragon 32 from the Tandy in Coventry."
That's strange; bearing in mind that the Dragon 32 was an almost-but-not-quite-compatible clone (#) of Tandy/Radio Shack's own TRS-80 Color Computer at a cheaper price (AFAIK) with a better keyboard, I'm surprised that they'd have let it compete with their own product like that.
(#) Some have argued that it might be more accurate to say the Dragon was based closely on the same Motorola reference design that the Color Computer used, rather than it being a direct ripoff of the latter. (Both machines were based around the same Motorola processor and graphics chip).