The original electrification scheme saw wires erected from Liverpool Lime St to Crewe and Manchester Piccadilly to Crewe, in the early 1960s. The next phase was from Crewe to Stafford, eventually the wires reached all the way to London Euston. By the mid 1960s trains to Liverpool and Manchester were electrically hauled throughout. Trains to Blackpool, Barrow, Windermere, Carlisle and Glasgow changed to diesel power at Crewe.
Full electrification to Glasgow started in 1974. The route from Carstairs to Edinburgh was electrified in the late 1980s.
Trains from Liverpool Lime St and Manchester Victoria combined/split at Preston and Carstairs, where Edinburgh portions were attached and detached., until it too was electrified.
Through electric working between Liverpool and Manchester to Preston began after completion of the wires between Edge Hill and Springs Branch, WIgan and Manchester via Bolton and Chorley to Euxton Junction in
the mid 2010s. The line from Preston to Blackpool North was electrified about the same time allowing through Blackpool - Euston services.