The Class 700 is a class of electric multiple-unit passenger train procured by the Department for Transport under the Thameslink rolling stock programme for use on the expanded Thameslink, Southern & Great Northern franchise in the United Kingdom.In 2011 the consortium Cross London Trains (XLT) consisting of Siemens Project Ventures, 3i Infrastructure and Innisfree was announced as preferred bidder with Siemens to manufacture the trains.