Hello Tony and welcome. I have previously built a 3" Marshall 'S' Type road roller and an own design Fowell-Box engine.
Current projects are a Burrell-Boydell engine in 1 1/2" scale ( I'm not as strong as I once was) and a 1/4 scale model of Henry Fords 1896 Quadricycle.
An 8" Burrell is going to be impressive, please keep us up to date on progress.
I'm probable not that far from you in North Derbyshire.
Brian