Housing Benefit Sarah McCarthy-Fry To ask the Secretary of State for Work and Pensions (1) how many housing benefit claimants subject to the single room rent restriction are (a) under 21 years and (b) 21 years or older; (2) how many housing benefit claimants subject to the single room rent restriction are (a) under and (b) over 21 years old. Mr. Plaskitt The information is not available, as the total cannot be split accurately by age.