The British Rail Class 319 dual-voltage electric multiple-unit (EMU) trains were built by BREL York, in two batches in 1987–88 and 1990. The trains were introduced for new north-south cross-London services from Bedford to Brighton. At privatisation these services were operated by Thameslink. In 2006, Thameslink services were merged with the Great Northern section of the former WAGN franchise to form First Capital Connect. On 14 September 2014, Govia Thameslink Railway took control of the Thameslink and Great Northern railway routes. Class 319 units have dual-power pick-up, from either 25 kV alternating current (AC) overhead lines for services north of London, or 750 V direct current (DC) third rail to the south. The Class 325 postal units were based on the Class 319 units, with the same traction equipment and body design, but are fitted with cabs of the same design as the newer Class 365 and Class 465 Networker units..