Orchid House will be part of the Lower Mill Estate, built on a 550-acre privately-owned nature reserve near Cirencester, known as the 'Capital of the Cotswolds'.

The mystery buyer - believed to be in the entertainment industry - will get a lakeside home complete with a glass-sided badger set in the garden.

Brad Pitt has looked at the plans for Orchid House, while Kylie Minogue has stayed at the estate.