Winsor's relationship with Railtrack was stormy. He saw it as his duty to hold the company more closely and vigorously to account. He criticised its many failures, including its poor knowledge of the condition, capacity and capability of its assets, rising numbers of broken rails and deteriorating track quality measures, its bad relationship with its train operator customers, its performance shortcomings, poor contracting and procurement strategies and the soaring costs of its projects (especially the renewal and upgrade of the West Coast main line). Instead of getting involved in eye-catching new projects such as taking over the London Underground and High Speed 1, Winsor believed Railtrack should concentrate on the core job of operating, maintaining and renewing the national network.