<p>To ask the Secretary of State for Work and Pensions, pursuant to the Answers of 30 June 2015 to Questions 4382 and 4385, what his Department's planning assumptions are on (a) the CSA case closure process and the numbers and rate at which cases will be closed and (b) the proportion of former CSA cases by segment expected to apply to the 2012 statutory child maintenance scheme in the case of proactive case closures cases and reactive case closure cases.</p>