DarloRich
Veteran Member
Not as much as 120, but Gerry Feinnes recorded one from a 'seven bell' stop to 103mph in 7 miles, and drinking a cup of tea on the footplate at 106mph, as steady as a rock. (I tried to run a railway p72).
Edit - just found this
Source Railway Performance society quoted here https://en.wikipedia.org/wiki/British_Rail_Class_55
that is impressive running - they must have been really going for it! 113 mph between Darlington and York from, I assume, a standing start at Darlo is canny special.