 The trial was a success and on 9 April 2005 the route was split into two sections; the Hayes-by-Pass to Shepherd's Bush Green section retained the number 207 and was converted to single deck articulated bus operation with Mercedes-Benz O530Gs.The section between Uxbridge and Acton was renumbered 427 using Dennis Trident 2s.A new base opened at Hayes for the 207; the Uxbridge and Acton allocations were withdrawn.