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Social Security

The hon. Lady asks an important question. I will deal specifically with the budget deficit. However, when we looked at this issue as a new Government, we were prompted particularly by the context of a year in which the RPI had been negative. We arrived in May 2010. In April 2010, uprating had been nil for the state earnings-related pension scheme, public sector pensions and all the connected pensions. That is not because inflation for pensioners had been nil—I have never met a pensioner who thought they had negative inflation in the year to September 2009—but because that is what the RPI said. The RPI was clearly not doing its job then, and that focused our mind on whether it was the right thing. It is true that, on average, the CPI tends to be lower—not always, but generally. I have looked at the past 20 years, and in five of those the RPI has been lower than the CPI. That improves the situation in a difficult financial position; I would not pretend that it does not. However, our job is to have an appropriate, stable measure of inflation, and that is what the CPI achieves. [Interruption.] Indeed, it is much less volatile. I sometimes think—perhaps this makes me sound a bit sad—that if the CPI were a person, it would be taking people to court for slander and libel for some of the things that have been said about it over the past few weeks and months. It is almost as if it is a stray number that we found on the back of a fag packet and decided to use to up-rate benefits. In fact, it is a careful calculation by the Office for National Statistics, with excruciating amounts of thorough methodological detail about the general increase in consumer prices. It is not the only measure, but it is an entirely decent and proper one. I want to respond to some of the myths that have grown up about CPI, and to stress that this is not a choice between a good index and a bad index, but about trying to find the most appropriate measure for the purpose. The first argument that is made is that CPI is always lower. As I have pointed out, that is not true, although it is lower on average over the long term. People criticise the methodology that is used. I will explain what the difference is and why we think it is appropriate. Somewhat more than half the difference between RPI and CPI is to do with the way in which CPI assumes that people change their behaviour when prices change. CPI uses a substitution method, which assumes that people substitute for cheaper goods. Interestingly, the Institute for Fiscal Studies, which has looked at this issue, has said that that difference is a"““sound rationale for the switch””" that we are making today. RPI does not do that. Even the Royal Statistical Society, which has been critical of aspects of our proposals, states that RPI arguably overstates inflation as a result. I stress that we are trying to find not a high number or a low number, but an appropriate number with an appropriate method. Particularly for those on benefits, the substitution approach is important. It is worth adding in parenthesis that people who say that RPI is the only possible way in which we can uprate pensions, because it is appropriate for pensioners, seem to be oblivious to the fact that RPI excludes the poorest fifth of pensioners from its consumption patterns. Their spending patterns are deliberately excluded in the construction of RPI. It seems odd that people are so wedded to RPI on purity grounds when it excludes the most vulnerable pensioners, about whom we should be most concerned. The second myth is that the UK Statistics Authority does not think that CPI is a proper measure of inflation. [Interruption.] The hon. Member for Leeds West (Rachel Reeves) says that she has not said that, but I assure her that I have seen it in plenty of letters. The UK Statistics Authority oversees the Office for National Statistics, so it would be very odd if it thought that the ONS was producing dodgy figures. CPI is the headline measure and it is the target for the Bank of England, so it is hard to see how it is not a proper measure of inflation. Thirdly, some say that the Royal Statistical Society does not like CPI. It has certainly criticised some aspects of the change, but it takes a more balanced view and sees limitations in CPI and RPI. As I have said, no single measure is perfect. The Royal Statistical Society has highlighted the issue of housing costs, and I will come on to that because it is clearly important. The fourth thing that people say is that this is a real cut to the value of benefits. [Interruption.] The hon. Member for Glasgow East (Margaret Curran) says that it is, but it is not. What we are doing is measuring inflation in an entirely proper manner and increasing benefits—revaluing and reflating them—every year in line with inflation, measured in an appropriate way. That is what indexation is meant to do. There is no argument for saying that it is a cut when we are increasing benefits and pensions by inflation. Only a couple of nights ago, the lead story on the BBC news was ““Inflation hits 4%””. Indeed, CPI inflation had hit 4%. That was the headline, that is inflation, and that is what we are uprating benefits by.