Thameslink has awarded a £120 million contract to upgrade infrastructure to Carillion. Carillion will service lines and deports as part of the Thameslink Programme in preparation for the delivery of new 12 car trains.
The longer trains are set to serve increased demand and improve the timetable of the service to the north and south of the capital.
Richard Hoswon, Chief executive of Carillion, said: "We will continue to work closely with Network Rail and the train operators to maximise value for money in delivering this important new phase of the Thameslink project."