Must add the glory days of the branch line from Bury to Holcombe Brook, no more than 4 miles single track and fully electrified (overhead to start then third rail (???)) until it became too expensive to maintain so they used diesels instead.
Wonder if anyone here is, ahem, old enough to remember using it?!!
Electrified in 1912 - 13 at the expense of Dick, Kerr & Co at 3,500 volts DC from overhead wires, as an experiment in high voltage electrification. Operated by a pair of two-coach electric trains, the experiment was considered a success but the L&YR Board decided instead to stick with the 3rd rail system with which they were familiar. The branch was converted to the 1,200 volt 3rd rail system used by Victoria to Bury Bolton Street trains in March 1918. During the changeover works, the branch trains continued to run by connecting the overhead wires to the 1,200 volt system and running a Manchester to Bury power car coupled to a Holcombe Brook coach, which acted as a current collector/driving trailer.
Even into BR days there were 29 return trips a day between Bury and Holcombe Brook, until March 1951 when steam push-pulls were substituted pending renewal of the electrical equipment. The passenger service was withdrawn completely in May 1952. (Without wishing to give anything away about the age of certain posters, the remaining stub of the branch as far as Tottington survived until August 1963.

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It has been mentioned that there was an intention to electrify to Chester, but let us not forget that when the Manchester Victoria to Bury Bolton Street line was electrified in 1916, it was originally part of a plan by the Lancashire & Yorkshire Railway to electrify all its branches that operated out of Victoria, including the Oldham Loop and Stalybridge branch, with the long-term aim of electrifying all of its main lines across the L&Y network. The First World War put the plan on pause, and post-war railway finances put the kibosh on the whole idea.
It is one of those great railway imponderables: 'what if...?' If the plans of the L&Y had come to fruition, along with the later planned extension of the wires beyond Altrincham, what would the Metrolink map look like today?
As a historic side note, when the Bury line was electrified, power was generated by the Lanky's own power station at Clifton Junction and fed into the system via a substation beneath Manchester Victoria. When engineers were working on the new track layout at Salford in early 1988, it was not until the electric trains had been at a standstill for half an hour that the purpose of the old cables which the engineers had severed became apparent!
