To ask the Secretary of State for Work and Pensions if he will estimate, on the basis of household surveys supported by his Department, how many people over state pension age are engaged in caring for (a) at least 20 hours per week and (b) at least 35 hours per week for a person over pension age who is in receipt of either attendance allowance or the care component of disability living allowance; and if he will make a statement. (250397)