It is the fourth day of the trip for experts Catherine Southon and Paul Laidlaw. A visit to Birmingham reveals there are more canals in there than in Venice. Paul takes a water taxi to uncover some antique goodies, including one grisly find that features gallows and a hanged man. Catherine picks up a Cartier-branded lighter at a bargain price, much to Paul's annoyance. The programme breaks from the shops to discover the story of the real Peaky Blinders and seeks out the Elizabethan carpenter who was canonised for his crafty priest hides. It's then off to Broughton Astley in Leicestershire for the auction.