Letters: There should be a law requiring all company directors to pay any fines imposed by the courts for negligence since otherwise they just pass them on to their customers

Letters: You state that the inquiry into the Grayrigg crash is exposing substantial systemic failures in the maintenance regime (Rail Inquiry exposes new safety failings, April 27). But no one can have any confidence that the inquiry behind closed doors will deliver any accountability. A similar inquiry into the Potters Bar crash did not do so and by the fifth anniversary (May 10 this year) still no one will have accepted the blame.