Lyme Park 2

Fiona Bruce visits the scene where Colin Firth famously emerged from the lake as Mr Darcy - Lyme Park in Cheshire.

Objects of interest to the experts assembled in the gardens include a pair of impressive pistols used to protect the Royal Mail from highwaymen, a tea caddy cunningly concealed as a pile of books and a picture of actress Sarah Bernhardt once owned by Elton John.