The roadshow descends on the biomes of the Eden Project in Cornwall, where treasures include a psychedelic view of Paris, a Greek plate from 300BC and poet Samuel Taylor Coleridge's hair.

The roadshow returns to one of the grandest houses in Wales, Powis Castle.

Mark Hill is intrigued by a ventriloquist's dummy with an unusual hairpiece, while Geoffrey Munn is amazed to discover a love token crafted from a swan's feather woven with gold that has survived for over 300 years.

Ronnie Archer-Morgan admires a selection of fabrics bought home as souvenirs from India and Canada by a sailor in the 1940s, and Grant Ford is thrilled to see a valuable oil painting depicting Scottish islands, bought from a charity shop for £20.

Joey Hardy meets three generations of one family and dazzles them with a valuation for a gold brooch in the shape of a bird, while Paul Atterbury hears a tale of wartime secrets, hidden plans and the connection between the Nazi rocket programme and the development of supersonic flight.

Runjeet Singh challenges Fiona to put three exquisitely designed ceremonial Indian weapons in order of value, and Amin Jaffer discusses his life in antiques and how the collection of treasures at Powis Castle inspired his passion for Indian art.