The ringing sound of a GPO Trimphone, the trendy alternative to the standard issue phone in the 1970s
M & N – 1970s
Mark & Naomi
Until ~1980s you could only buy a phone (or phone line, come to that) from GPO, the nationalised forerunner of BT. Early on, choices were limited: if you didn’t like the black one you could have a white one. Then edgy colours such as red and 2-tone green crept in. But the Trimphone broke with all that by offering a different receiver altogether, that was less bulky and that warbled charmingly instead of drill-ringing like a fire engine. The future had arrived!