<P> Before April 2009, Cornwall was administered as a non-metropolitan county by the Cornwall County Council with six districts, Caradon, Carrick, Kerrier, North Cornwall, Penwith, and Restormel (a borough). </P> <P> The Council of the Isles of Scilly was and still remains a separate unitary authority . </P> <P> On 5 December 2007, the Government confirmed that Cornwall was one of five councils that would move to unitary status . This was enacted by statutory instrument as part of the 2009 structural changes to local government in England, The changes took effect on 1 April 2009 . On that date the six districts and Cornwall County Council were abolished and were replaced by Cornwall Council . </P> <P> Currently (2017,) the council has 123 councillors, the independent Local Government Boundary Commission for England is proposing that Cornwall Council should have 87 councillors in future . </P>

When did cornwall council became a unitary authority