ENHANCEMENTS to the closed-circuit television, public address, passenger information and help points on London Underground are included in a £150m contract which Public-Private-Partnership contractor Tube Lines has awarded to Marconi and Amey Infrastructure Services.

The 13-year contract covers stations on the Jubilee, Northern and Piccadilly lines. An intelligent maintenance system will be installed at 100 stations, providing staff with real-time diagnostic information and allowing remote monitoring of the status and performance of the communications equipment.