Gloria Hunniford, Angela Rippon and Julia Somerville lift the bonnet on the secret history of thousands of second-hand cars. Could yours be among the growing number that have been clocked? Also today, the shocking state of rental properties that landlords don't keep up to scratch; the team exposes the highly unusual treatment one customer received from an exclusive dating agency that charges thousands to be on its books; and the programme's team of experts tackles more problems at the Rip Off Britain pop-up shop.