§ Mr. Willetts
To ask the Chancellor of the Exchequer with reference to the statistics on the Inland Revenue regarding approved pension schemes, available at: http:// www. inlandrevenue. gov.uk/stats/pension s/p_t091_htm, which of the figures are based on(a) administrative data and (b) information compiled by the Office for National Statistics. 
§ Dawn Primarolo
The figures in the table are compiled from a number of different sources. Inland Revenue estimates of average marginal rates of income tax are used with ONS data on occupational pension contributions (net of estimated transfers, refunds and surrenders compiled from FSA and ABI data); investment income; lump sum payments; and pensions in payment. All other components of the table are Inland Revenue estimates based primarily on administrative data.