To ask the Chancellor of the Duchy of Lancaster what his latest estimate is of the number of retired public sector workers to have been underpaid as a result of errors in the administration of their state pension. (270199)

I refer the right hon. Member to the reply given to the hon. Member for Northavon (Steve Webb) by my right hon. Friend the Chancellor of the Duchy of Lancaster on 25 March 2009, Official Report, column 562W.