asked the Secretary of State for Transport if he will provide information on central Government expenditure on (a) trunk roads and (b) motorways for all years since 1978–79 inclusive, by standard United Kingdom region, showing the absolute, indexed and per capita form of the following disaggregated costs: (i) construction costs, (ii) maintenance costs, (iii) capital account costs and (iv) current account costs.

Not all of this information is available. What can be given is extensive and will take time to assemble. I will write to the hon. Member when this has been done and place a copy in the Library.