Retail Prices Index

Lord Peston Excerpts

Wednesday 24th April 2013 Lords Chamber

[Lord Wallace of Saltaire]

My Lords, I was not aware that either mathematics or statistics differed according to national boundaries. The only statistics course I took was in the United States. I should have thought that international standards—those of Eurostat, the International Labour Organisation and the IMF—are standards that the UK should follow without wishing to bring the defence of national sovereignty or hatred of the European Community into account.

[Lord Peston]

My Lords, does the Minister agree— I am sure he will agree as his background is similar to my own on this matter—that there is no such thing as a perfect price index—far from it? Those of us who taught the subject spent all the time explaining why there is no such thing. Is it not for the Government to explain what they want to use this particular index for? Is it to measure the inflation rate, in which case the RPI is not, in my view, the right index and the GDP deflator is, or is it to measure the cost of living? Even then, they have to answer the question: whose cost of living? Does the Minister agree with that?

[Lord Wallace of Saltaire]

My Lords, I have gone back into the area of statistics and I am happy to tell the House that there is a range of different measures of inflation in Britain—the RPI, RPIJ, RPIX, which excludes mortgage costs, and the RPIY, which excludes tax changes. Then there are the CPI, CPIH, CPIY and CPICT. I hesitate to explain all these in detail to the House.