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Pensions Bill [Lords]

I know that the right hon. Gentleman and the right hon. Member for Croydon North (Malcolm Wicks) have raised the issue in the past. I recognise their background, great experience and genuine sense of a need to try to figure out a solution. I am always willing to listen to argument and debate that, but my concerns are twofold: first, I am not certain that we have the data going back far enough to be able to make the calculation, although I might be wrong; and, secondly, I return to the point that in the past we have not done things in that way, because it is very difficult to set out differential pension retirement ages for different groups. We are going to equalise provision for women and men, but now the debate is about breaking them apart, and that would lead us into all sorts of debates about unequal retirement ages.