Oil Exploration Mr. Butterfill To ask the Chancellor of the Exchequer what is the total amount of exploration and appraisal relief claimed by oil companies for each of the last five years; and what percentage of total exploration and appraisal expenditure this represents for each of the last five years. Mr. Dorrell The amounts of exploration and appraisal relief claimed against profits for petroleum revenue tax since 1988 have been as follows: --------- |1988 | --------- |1989 | --------- |1990 | --------- |1991 | --------- |19922 3| ---------