Question to the Department for Transport:

To ask the Secretary of State for Transport, whether railway verges are surveyed to identify locations where there is a danger that landslides may occur; and if he will make a statement.

This is an operational matter for Network Rail. Network Rail advises that its railway earthwork assets are inspected by suitably qualified engineers at intervals of 1, 3, 5 and 10 years. The frequency of inspection is driven by the hazard rating of the asset, which is calculated from data that is recorded during visual observations across the slope.

The likelihood of an earthwork asset failing increases during periods of rainfall, in particular during extreme rainfall events. During times where there is an increased likelihood of failure, additional inspections are undertaken. These are focussed with available resources on locations of highest safety risk, where the consequence of a failure is greatest.