Telephony in Greater Manchester

The Cities of Manchester and Salford and some surrounding urban areas such as Stockport, Oldham and Bolton, (now forming parts of Greater Manchester), were the location of several advances in the development of telephony in the United Kingdom. A Manchester company installed the country's first regular telephone system in the city, wiring solutions which were adopted across Britain were initiated in Manchester and Stockport, the city was (arguably) the site of the UK's first telephone exchange and a radio telephony service which was the forerunner of modern mobile phones was controlled from the city.

Source: Wikipedia — Telephony in Greater Manchester (CC BY-SA 4.0)