 An official investigation concluded that the fire was probably caused by a fault on an electrical distribution board in the basement.In January 2016, the National Trust announced that a number of the principal rooms were going to be restored to the original 18th-century designs, and the "less architecturally significant" upper floors were to be fully modernised for holding exhibitions, events and performances.The cost of the restoration work is being funded by an insurance payout estimated at £65 million.