Antiques Roadshow: Crystal Palace Park, London 1

Fiona Bruce presents the show from Crystal Palace Park in south-east London, where she is joined by cartoonist Ralph Steadman. Items brought in to be valued include a trio of bronze Chinese censers, a rare sundial by Thomas Tuttell from the 17th century, and a rare do it yourself kit dress by fashion designer Paco Rabanne. Mark Smith challenges Fiona to identify secret Second World War spy gadgets concealed in everyday items