sentences:  It also has a duty to assess all UK government statistics from other departments.Following Gordon Brown's announcement of new constitutional arrangements for public appointments, Sir Michael became, on 18 July 2007, the first such nominee to appear for vetting before the House of Commons Treasury Committee and to have his nomination subject to confirmation by the House.Sir Michael officially resigned from the post on 31 March 2012; he was succeeded by Sir Andrew Dilnot CBE.