Question to the Department for Transport:

To ask the Secretary of State for Transport, what information her Department holds on the levels of corrosion on the Class (a) 150/0, (b) 150/1, (c) 150/2, (d) 155, (e) 156 and (f) 158 vehicles operated by Northern Trains.

The Department does not hold information with regards to the levels of corrosion on the specified rolling stock. It is a matter for the operator, rolling stock owner and maintainer to ensure that their rolling stock remains in an appropriate condition for operation on the railway network.