Re: A question about overhead phone-lines.
I doubt you could say a particular date as it wasn't done as a 'nationwide' project. I know there were still ring type DP's (with double 'J' spindles and two insulators and all bare copper wires still in use in the late 1980's. There was one in Hereford with about 15 pairs and not a single dropwire!
Not sure where MRCHE (without looking through my '1144') other than Manchester Telephone Area. I may have visited it on a Sunday in the mid 1990's on my tour of most of the exchanges between the Mersey and the Scottish border 'acquiring things of interest' - thanks to BT for providing me with a TO (Technical Officer) and a Transit van. Most of my GPO years were spent deep underground looking after a major hub of the Defence Telecoms Network way west of Manchester.
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