Enterprise is the cross-border inter-city train service between in the Republic of Ireland and in Northern Ireland, jointly operated by Iarnród Éireann (IE) and NI Railways (NIR). It operates on the Belfast–Dublin railway line. History The Great Northern Railway (Ireland) (GNR(I)) introduced the service as the "Enterprise Express" on Monday 11 August 1947 in an attempt to compete with air and road transport which were challenging the railways. In particular, business travel was and is an important market. Customs checks were limited to the Belfast and Dublin terminals to reduce journey times by ensuring that journeys were non-stop, and advance booking was available. The name of the train comes from the "enterprising" approach that the GNR(I) took to make journeys more convenient for passengers despite the requirement for customs checks. The initial service ran between and Dublin Amiens Street Junction (renamed in 1966). Locomotives of GNRI Class V were initially used, followed in 1948 by GNRI Class VS. In October 1950 the service was extended to Glanmire Road station (renamed to Cork Kent in 1966) in Cork. This proved unsuccessful and ceased in September 1953 when the governments of the Republic of Ireland and Northern Ireland nationalised the GNR as the Great Northern Railway Board (GNRB). The Cork service's unpopularity may also have been due to the six-and-a-half-hour journey time. On 1 October 1958 the GNRB was dissolved and its assets and liabilities were split between Córas Iompair Éireann (CIÉ) and the Ulster Transport Authority (UTA) — the predecessors of Iarnród Éireann (IÉ) and Northern Ireland Railways (NIR) respectively. Following the completion of the Belfast Central Line Project, which involved the relaying of track along the route of the former Belfast Central Railway, the Belfast terminal moved to the newly constructed Belfast Central station in April 1976. The new station was named after the former railway and was located some distance from Belfast City Centre, adjacent to the city's markets. (The name was a source of confusion to tourists and was eventually renamed to in 2018). The service was upgraded in September 1997 with a new timetable and new coaching stock from French train makers De Dietrich Ferroviaire (now Alstom DDF). At this point the service, which had operated under either the IÉ or NIR brands, was branded separately as Enterprise. The service has suffered disruption, particularly during the Troubles when it was regularly halted by bomb threats. These became