First broadcast 16th February 2014.

The Duke of Dunstable - the most obnoxious man in England - has come to stay at Blandings. Not content with smashing the fixtures, he is determined to have Clarence committed as a lunatic.

Timothy Spall - Clarence
Jennifer Saunders - Connie
Jack Farthing - Freddie
Tim Vine - Beach
Ron Donachie - McAllister
Harry Enfield - Duke of Dunstable
Mathew Baynton - Pongo
Ruby Bentall - Linda
Geoffrey McGivern - Sir Roderick Glossop