The story
From their maximum speed of 125 mph.
Etymology from Wiktionary, CC BY-SA 4.0.
125
Today it means: A high-speed train (HST) powered by two British Rail Class 43s, one at each end. Full definition →
Today it means: A high-speed train (HST) powered by two British Rail Class 43s, one at each end. Full definition →
From their maximum speed of 125 mph.
Etymology from Wiktionary, CC BY-SA 4.0.