§ Mr. Willetts
To ask the Secretary of State for Social Security what the amount of erroneous(a) underpayment and (b) overpayment arising as a result of error or fraud was by (i) officials and (ii) customers in respect of each benefit administered by his Department for each year since 1996–97. 
§ Mr. Rooker
The information requested is not available. Snapshot estimates of fraud and customer error in particular benefits are captured in the National Benefit Reviews, which have been placed in the library.
Area Benefit Reviews, which started in October 1997, provide on-going measurement of fraud and customer error for Income Support and Jobseeker's Allowance. Reports are placed in the Library.