Oh, I was not aware you are into this as a collector, now I feel honored to be able to show you something new!
I live in Europe, not the UK though, so maybe that explains why these are familiar to me. Although another user said they saw one in Ohio.
Silic0n_Alph4@lemmy.world 11 months ago
Not just a U.K. company, the GPO were the General Post Office and ran the entire phone network and more: en.m.wikipedia.org/wiki/General_Post_Office