Predicted journey times of almost nine hours for Glasgow to Paris at the time of growth of low-cost air travel during the 1990s made the plans commercially unviable against the cheaper and quicker airlines.[21] Other reasons that have been suggested for these services having never been run were both government policies and the disruptive privatisation of British Rail.[22] Three of the Regional Eurostar units were leased by Great North Eastern Railway (GNER) to increase domestic services from London King's Cross to York and later Leeds.[23] The lease expired in December 2005, and most of the NoL sets have since been transferred to SNCF for TGV services in northern France.[24]