To ask the Secretary of State for Transport if he will give the total value and tonnage of freight carried by British Rail in Scotland (ScotRail) in each of the years from 1979–80 to 1986–87; what percentage of this was from the supply of coal to Scottish power stations: and what percentage of British Rail's (a) total income and (b) freight income this represents for each of these years.

This information is not available.