Design and construction of London Bridge station on the Jubilee Line Extension

One of the most complicated contracts on the £3·3 billion Jubilee Line extension project was that for London Bridge. Not only did it involve installing a new Underground station beneath one of London's busiest railway, tube and bus stations, it also involved a significant and long overdue upgrading of the whole site to increase transport capacity. New ticket halls, concourses and escalators were installed within the Byzantine maze of Victorian brick arches under the station while, further down, the contractor successfully used the new Austrian tunnelling method to create many of the new platforms, running tunnels and vent tunnels.