The British Rail Class 365 Networker Express were dual-voltage ( and 750 V DC) electric multiple-unit passenger trains built by ABB at Holgate Road Carriage Works in 1994 and 1995 to operate services in South East England and on the Great Northern Route. These were the last trains to be built at the Holgate Road works before its closure. Due to the refurbished front end resembling a smiling face, the trains were nicknamed "Happy Trains" by enthusiasts. Background In the early 1990s, the Networker family was entering large-scale service in the Network SouthEast sector – both third-rail 'Networker' EMUs (/) and 'Network Turbo' DMUs (/) were in service, with proposals for others, including a so-called "Universal Networker", intended as Classes 371 and 381, that would have dual-voltage capability. However, by 1992, no work had been done in the development of these due to a lack of funding, so a replacement plan was required. For this, the Class 465 was modified for longer-distance services – a prototype was converted from an existing unit (designated as Class 465/3) to determine suitability, before funding was authorised for the purchase of 41 dual-voltage EMUs, each of four cars. These became the Class 365. Network SouthEast won an argument for government investment for the trains, over InterCity's proposal for InterCity 250. The Class 365 was ordered in 1993. Description Although specified as a dual-voltage unit, Class 365s never operated with this capability since they were built with only one system of traction current pickup. The first 16 (365501 to 365516), which worked briefly for Network SouthEast before the South Eastern franchise was awarded to Connex South Eastern, were originally supplied only with DC shoe gear for use on the 750 V third-rail system. In this configuration the maximum speed was . During testing and commissioning, 365502 ran briefly on the AC network, this being the main reason for the unit being chosen to be subleased to WAGN in the aftermath of the Potters Bar accident in 2002. When they transferred to West Anglia Great Northern for use with overhead line traction supply, the shoes and associated equipment were removed and a Brecknell Willis high speed pantograph was installed, along with other operator and voltage-specific modifications and testing by Bombardier Transportation at its Doncaster Works. However, the 365s retained the original 750 V DC bus, meaning that when on overhead lines the current is collected as