 The review caused 46 unitary authorities to be created.A further review was initiated in 2007 and was enacted in 2009.The review established Cornwall and Northumberland as counties of a single district; established unitary authorities in County Durham, Shropshire and Wiltshire covering the part of the county that was not already split off in the 1990s review; and divided the remainder of Bedfordshire and Cheshire into two unitary authorities.