The locomotive named 'Sir Nigel Gresley' who designed it for LNER [ London and North Eastern Railway ] with its unique streamlined shape honed in a wind tunnel. An identical engine, 'Mallard' still holds the world speed record for a steam locomotive set at 126mph in 1938. I followed Olly's previous advice and went light on the tree tones to avoid distraction from the train, viaduct and reflections.