" The radio was on the counter, turned to Wonderful Radio Blackbury's Mike Mikes Radio Show, which was as excellent and totally bodacious as two hours of phone-ins and traffic reports from the Blackbury bypass could be." (Johnny and the Dead , published in 1993)

:D

wait, it gets better.
there's phone box travel , too :D

that's more likely a Dr.Who influence, though ;)
after all, Pratchett IS British.