South East England is one of the nine official regions of England. The current boundaries include Berkshire, Buckinghamshire, East Sussex, Hampshire, Isle of Wight, Kent, Oxfordshire, Surrey and West Sussex. In common usage the area may widely vary. The region of South East England shares part of its borders with London. Because of high degrees of interdependence it is arguable that neither London nor its neighbouring regions can approach sustainability in isolation. In South East England Area of Outstanding Natural Beauty cover some 36% of the countryside.