General Post Office/BTGeneral Post Office/BTThe General Post Office (GPO) was the state postal system and telecommunications carrier of the United Kingdom until 1969. Established in England in the 17th century, the GPO was a state monopoly covering the dispatch of items from a specific sender to a specific receiver ; it was overseen by a Government minister, the Postmaster General. Over time its remit was extended to Scotland and Ireland, and across parts of the British Empire.Read more on Wikipedia → · British · Source/via: Science Museum Group(website)
About This Phone
The Ambassador range was the first UK telephone designed for the plug-and-socket connections that were replacing the hard-wired connections of previous phones. It was designed for the British Post Office.