4. Peterborough 13

Two mums and their daughters take on the Bargain Hunt challenge at Peterborough's Festival of Antiques. Today's experts Jonathan Pratt and Nick Hall help the teams spend their £300 on three items but which team makes a thumping profit at today's auction over in Lichfield? Eric Knowles tells why 18th-century drinking glasses can be worth some money and which ones to look out for.