Rail regulator Tom Winsor has introduced milestone targets to ensure Railtrack delivers the West Coast Main Line upgrade on time. The track operator will face financial penalties if it fails to meet the milestone deadlines. Penalties will be set according to the amount of outstanding work. Railtrack will also have to produce quarterly progress reports for the regulator, who will appoint independent inspectors to monitor progress. The regulatory review also allows for Railtrack to be paid £500M to deliver 42 additional slow line paths per hour on the West Coast Main Line, as well as completing existing contracts. However, plans to add an extra 2.5 fast train paths per hour have been shelved. It was hoped the privately financed groups would come forward with plans to fund this work, but so far no-one has expressed interest.