Original sentence: From 3 April 2007 the CNC is headed by Chief Constable Richard Thompson,  and authorised in the Energy Act 2004 with its own Police Authority, it falls under the remit of the Department for Business, Enterprise and Regulatory Reform instead of the Home Office
Edited sentence: From 3 April 2007 the CNC is headed by Chief Constable Richard Thompson,  and authorised in the Energy Act 2004 with its own Police Authority, it falls under the remit of the Department of Energy and Climate Change instead of the Home Office