Network Rail is a private sector not-for-dividend company limited by guarantee. The Department for Transport does not hold the information requested.
This is an operational matter for Network Rail as the owner and operator of the national rail network. My hon. Friend should contact Network Rail's Chief Executive at the following address for a response to her question:
Iain Coucher
Chief Executive
Network Rail
Kings Place
90 York Way
London, N1 9AG.