The public rallied to save Tyntesfield House

Tyntesfield House, the former home of Lord Wraxall, was bought by the National Trust last year.

The programme claimed to reveal the "secrecy and mismanagement" behind the restoration project.

Series producer Patrick Forbes said the problems started with the asking price: "Top dollar was wanted for the house, but the price is shrouded in mystery," he said.

Earlier this month the story of the historic mansion was told in print for the first time.

Fertile Fortune: The Story of Tyntesfield, by James Miller, explains the long history of the estate and the Victorian family who completely rebuilt it.

William Gibbs, a religious and charitable man who made a fortune out of fertilisers, began a complete reconstruction of the house in 1863.

The National Trust took over the property in 2002 and launched the biggest restoration programme the organisation has ever tackled.

A campaign, which raised £24m in eight weeks towards the cost, was named the most successful of the last year.