Editing LMS Coronation Class (section)

=== Overview ===
[[File:6233 Duchess of Sutherland Midland Railway Centre (5).jpg|thumb|right|The LMS's code for a locomotive's shed was displayed on an oval plate on the smokebox door. The code "1B", above, relates to Camden shed.]]

Initially all the locomotives were allocated to Camden shed in London (LMS designation 1B). By 1939 there were nineteen officially stationed there. This came to an abrupt end when war was declared in September of that year, as the Government had decreed that in such an event all Britain's largest locomotives would be mothballed for the duration. {{r|Baker|p=49}} Consequently, seven of the class were immediately dispatched to either Holyhead or to Rugby (via Manchester Longsight). Within weeks the stupidity of this policy was realised and the locomotives were returned to service. {{r|Baker|p=49}}

In 1940 some of the class were reallocated to Crewe North (5A) and Glasgow Polmadie (27A, 66A from 1950). As the numbers grew, Crewe North was generally the beneficiary, but in 1946 Carlisle Upperby (12B, 12A from 1958), received an initial allocation of six locomotives. At various times locomotives were also seconded to Liverpool Edge Hill (8A). A typical allocation of the 1950s was Camden 15, Crewe North 10, Polmadie 9 and Upperby 4.{{r|Jenkinson|loc=Summary of 'Duchess' 4-6-2 Allocation at Depots as at Autumn of the Years shown below}}

During the 1960s the installation of overhead electrification commenced between London Euston and both [[Liverpool Lime Street railway station|Liverpool Lime Street]] and Manchester Piccadilly. Phase 1 comprised electrification between Crewe and Liverpool and Manchester. Phase 2 involved the extension southwards from Crewe to London.<ref>{{cite web|url=http://www.railwaysarchive.co.uk/documents/BRB_YNR001.pdf|title=Your New Railway|date=1966|publisher=British Railways Board|pages=7–9}}</ref> The massive proportions of the ''Coronation Class'' resulted in their prohibition from operating under those wires. Camden's allocation was now run down (the remaining locomotives being transferred to nearby Willesden (1A)), whilst Polmadie's was dispensed with entirely. The bulk of the class was situated at either Crewe North or Carlisle, the Kingmoor shed (12A, 68A from 1958) now being used in addition to Upperby.