It was named Princess Margaret Rose after the then five-year-old daughter of Prince Albert, Duke of York (later King George VI), Princess Margaret Rose, the younger sister of Queen Elizabeth II.
The locomotive was used to haul the heaviest and fastest LMS passenger trains from London to north and northwest England and to Scotland.
During its operational career it was allocated to Crewe North, Edge Hill (Liverpool), Kingmoor (Carlisle) and Polmadie (Glasgow) motive power depots.
It then operated on the UK mainline rail network for several years until 1996, hauling special charter trains.
It is owned by The Princess Royal Class Locomotive Trust and is on static display in the West Shed Museum pending a future restoration to working order when funds allow.