Catherine Southon and Phil Serrell embark on the fourth leg of their trip travelling through the Home Counties of Buckinghamshire and Hertfordshire, as they head towards their penultimate auction. Catherine shells out for not one but two vintage chairs, a Murano glass bead necklace, an ebonised elephant head page turner, a police helmet and a cheese mould. Phil splashes serious cash on some Murano of his own, a stylish library chair, horses sculpted in leather, an elegant mirror and a set of antique scales