Flog It! comes from the ancestral home of the Spencer family, Althorp in Northamptonshire. Nineteen generations have lived here, employing local people to work at the house and vast estate. Antiques experts Christina Trevanion and Will Axon find a selection of antiques and collectibles to take to auction. Christina is drawn to a 1950s toy pedal car, and Will finds a Mouseman tray. Paul Martin discovers how the Grand Union Canal was the waterway equivalent of the M1 as he takes to the water on a narrow boat and discovers what life was like for the boat people who ferried cargo from A to B.