In much the same way that Tornado was constructed as the 50th A1 rather than a replica of the original members of the class, No. 2007 will be the 7th member of the P2 class, likewise allowing for improvements and variations in design.
The decision to closely follow the pattern set by Cock o’ the North means that the locomotive will have the original streamlining and featurer rotary cam valve gear and will look, to all intents and purposes, like No. 2001. However, the Trust acknowledges that the original P2s had certain weaknesses and No. 2007 will have these eliminated at the design stage. The team is using modern computer-aided design and modelling techniques that obviously weren’t available to engineers in the days of LNER to assist these developments. This has been an extremely exciting process. You can find the full design study here.
Some of the main components that have evolved from the original designs include: