The trains to operate all these services were built at the same time as the Channel Tunnel was under construction in the late 1980s to early 1990s. The London-Paris-Brussels (""Three Capital"" Class 373/1) trains are owned in groups by Eurostar International (subsidiary of LCR), SNCF and NMBS/SNCB but operate as a common pool. They consist of 18 coaches in a fixed formation. Seven shorter 14-coach "North of London" 373/2 were also constructed for the regional services at a cost of £180 million. All seven are owned by Eurostar International having been transferred from British Rail. Following the non-start of regional services, the trains were stored at North Pole depot in west London. Six of the seven trains have seen use at various times since.