Original: The LGV Nord line in France opened before Eurostar services began in 1994, and newer lines enabling faster journeys were added laterâ "HSL 1 in Belgium and High Speed 1 in southern England.
Simplified: Since Eurostar began in 1994, new lines have been built in Belgium (HSL 1) and Southern England (High Speed 1) to the same standard as the LGV Nord line originally used in France, reducing journey times.