It is the only example of a LNER Peppercorn Class A1 class locomotive in existence, the entirety of the original production batch having been scrapped without preservation.
Actual construction of the Tornado began in 1994, being based at Darlington Works for most of the project, while numerous components such as the boiler were manufactured elsewhere.
The project was financed through fundraising initiatives such as public donations and sponsorship deals; further funding came from hiring Tornado itself on special services. Construction was completed in 2008, and full certification of the locomotive was achieved in January 2009. Having been designed with compliance to modern safety and certification standards, Tornado has been conducting passenger services on the UK rail network and on mainline-connected heritage railways since 2008
I learned about this when the goof balls on Top Gear season 13 raced this train, a motorcycle, and some car. Clark had to shovel a lot of coal