Sheds that it was allocated to over the years included: Crewe North (5A), Carlisle Upperby (12B), Camden (1B), Willesden (1A) and Edge Hill (8A).

[2] In November it was announced by the group who were building "The Unknown Warrior" that there had been a few problems arising with the Royal British Legion who were supporting the construction of the engine, and with deep regret it was announced that the RBL could no longer support the loco group which also meant that the RBL's crest above the engines nameplates would have to be removed.

Alongside names based on regiments, the military & war heroes there were other names entered into the competition which included: Henry Fowler, Winston Churchill, Sir Edward Elgar, Fred Dibnah, Robert Riddles, Baby Scot (nickname for class), Jack Mills (Great Train Robbery), Crewe & Llangollen.

For a while during the locomotive's construction, the engine wore crimson lake on the left side of its cab and BR Green on the right, this being to give an idea to the public of what it would look like in either livery when completed and running.

[citation needed] On 31 March 2009, two frame plates were cut at Corus Group plc Steel, Cradley Heath in the West Midlands.

[citation needed] In September 2010, the first driving wheel was cast at the Boro Foundry, using the pattern made for LMS Jubilee Class 45699 Galatea.

The six new driving wheels have been cast by The Boro Foundry Stourbridge and machined and assembled by the South Devon Railway.

[18] In July 2021, it was reported that all six wheels had suffered from widespread metal fatigue cracking and would need to be replaced.

[19] At The LMS Patriot Project's 2010 AGM on 14 November, it was announced that the boiler for 'The Unknown Warrior' would be built by L&NWR Heritage at Crewe.

On 9 May 2017, L&NWR Heritage informed The LMS Patriot Project that it had decided to end all sub-contract work, and would not be completing the boiler.

[21] The completion date was intended to be 2018 with a formal dedication planned for the 100th anniversary of the end of the First World War.