To ask the Secretary of State for Defence if he will list all the major changes between the basis of calculations used to produce the list of contractors which appear on page 15 of the "Statement of the Defence Estimates Volume 2", and those of similar, previously published, lists which relate to the six years to 31 March 1989.

There have been no major changes.

To ask the Secretary of State for Defence if he will list the total amounts paid by his Department to United Kingdom-based contractors in each of the five years to 31 March 1988.

The Ministry of Defence paid the following total amounts to United Kingdom-based contractors for the financial years 1983–84 to 1987–88:

To ask the Secretary of State for Defence if he will list the precise amounts paid to each of the 10 contractors which received the largest share of contracts awarded by his Department in each of the five years to 31 March 1988.

The 10 contractors who received the largest payments from my Department in each of the years specified were: