HC Deb 25 November 1969 vol 792 c45W
30. Mr. Ridley

asked the Chancellor of the Exchequer, in his calculations as to the value of the foreign exchange saved by import-saving and export-promoting schemes for industrial development in the United Kingdom, such as aluminium smelting, what sterling value he places upon each £100 of foreign exchange saved.

Mr. William Rodgers

Such schemes need to be considered individually, in the light usually of many factors. It is not practicable to evaluate foreign exchange considerations in a single standard figure.