sentences:  High Speed 1 (HS1) (previously known as the Channel Tunnel Rail Link) is a high speed railway built to French 'LGV' (Ligne à Grande Vitesse) standards, connecting the Channel Tunnel to London.Since December 2009, high speed commuter services from Dover have called at Folkestone and then, using the South Eastern Main Line to Ashford International, the services join HS1 for the journey to Ebbsfleet, Stratford and London St Pancras.The journey time to London via this route has been reduced to under 1 hour; some trains from Folkestone West take as little as 52 minutes to reach the capital by High Speed Train.