Antiques Roadshow: Royal Agricultural University, Cirencester

Fiona Bruce and the experts pay a return visit to the Royal Agricultural University at Cirencester in the Cotswolds. Family heirlooms under examination include a mantrap allegedly used to catch an amorous lover intent on elopement with the vicar's daughter; a portrait of the first chairman of a well-known British insurance company, which was originally founded to pay for funerals of cholera victims; and a 14th-century seal bought in a boot sale. Plus, could a visitor really have a teapot once used by Nelson?