Secrets of the National Trust

Alan Titchmarsh goes behind the scenes at Knole in Kent, Anneka Rice visits Croome Court and Miriam O'Reilly walks in the footsteps of giants on the Jurassic Coast.

Alan Titchmarsh reveals some surprising facts about Beatrix Potter, Oz Clarke visits a nursery housing some of our rarest plants, Jon Culshaw visits a time capsule in Gloucestershire and Suzannah Lipscomb travels to Blakeney Point.

Alan visits Attingham Hall in Shropshire, one of the Trust's grandest properties. Jon Culshaw uncovers a lost WWII secret at the former home of Benjamin Disraeli. Anneka Rice goes fly-fishing on the River Test. Lisa Holloway watches the restoration of a 430-year-old tapestry in Norfolk. Dan Jones visits a remote farm in north Wales, which was rescued by a group of Hollywood A-listers.

Alan visits Quarry Bank Mill in Cheshire, an 18th-century cotton mill that is still home to a working mill as well as a museum. Oz Clarke uncovers some Civil War history at Dunster Castle in Somerset. Jon Culshaw visits a stately pile in an unusual location, Dan Jones joins an architectural dig on the south coast, and Clive Aslet visits the spectacular grounds of Biddulph Grange in Staffordshire.

Alan Titchmarsh pieces together the incredible rags-to-riches story of Thomas Legh, owner of Lyme in Cheshire. In Wiltshire, Oz Clarke learns the art of painted glass restoration, while Dan Jones is in Wales to discover the ingenious ways the Romans got their hands on gold.

Alan Titchmarsh reveals the secrets of the Cistercian monks who lived at Fountain's Abbey in North Yorkshire over 800 years ago, and visits its neighbour - the spectacular Studley Royal Water Garden. Anneka Rice is at Mottisfont in Hampshire and Britain's last working water-driven spade mill. Miriam O'Reilly joins a bat watch on the South Downs, and Dan Jones treads in the footprints of Giants in County Antrim.