To ask the Secretary of State for Transport (1) if he will list the High Court challenges to road schemes that have been heard in each of the past five years, with the date when the motion was served in each case, and the date on which the action lapsed or was determined;(2) what is the average, greatest and lowest number of sitting days in the High Court taken by challenges to the Secretary of State for Transport on road schemes in the past five years.

We do not hold such information. I will write to my hon. Friend.

To ask the Secretary of State for Transport what guidance he gives to local authorities about the maintenance of retaining walls of roads under their control.

Retaining walls are included within the scope of the Department's procedures for the inspection and maintenance of structures on motorways and other trunk roads. Local authorities are encouraged to adopt these procedures in maintaining retaining walls on their own roads.