Alan is in North Wales, discovering the unique story of Erddig, a grand mansion where the servants and the Yorke family, who owned it for many years, enjoyed a very close relationship. At Powis Castle, Nigel Havers checks out some magnificent topiary, and Miriam O'Reilly learns how servants were kept very firmly in their place at Calke Abbey, Derbyshire.

Alan Titchmarsh reveals the history, human stories and the hidden treasures of Britain's historical estates. Set on the shores of the beautiful Strangford Lough in Northern Ireland is one of the most glorious houses in the National Trust Collection, Mount Stewart.