HC Deb 24 January 1973 vol 849 c189W
Mr. Marples

asked the Chancellor of the Exchequer, taking 15th October 1964 as the starting date, what was the purchasing power of £100 on 31st March 1966, 18th June 1970 and 1st January 1973.

Mr. Nott

Taking the internal purchasing power of £100 as relating to October 1964, its value in March 1966, June 1970 and December 1972, the latest date for which information is available, is estimated at £94.50, £77.50 and £63.70 respectively. These estimates are based on the movement in the Consumer Price Index between 1964 and 1968 and the movements in the General Index of Retail Prices for other periods.