Antiques Roadshow: Powis Castle & Garden, Welshpool 1

Fiona Bruce visits Powis Castle, one of the grandest houses in Wales, where Duncan Campbell discovers a vanishingly rare silver tobacco box from the 1600s, and Serhat Ahmet examines a porcelain egg with a royal connection. Paul Atterbury is taken back to the earliest days of Dr Who, while Alexandra Aguilar values a jade ornament bought at a car boot sale for 50 pence and Geoffrey Munn uncovers a jewellery collection 'of the highest quality' with rubies and diamonds dating from the 1700s