New home knotweed no-one told us about

A look back at some of the most shocking property stories, including the curse of knotweed as one couple discovers it in their garden shortly after they move in. The neighbours say that it has been there for years, so why didn’t the survey or seller declare it? And the team comes to the aid of a single mum landed with an £80,000 repair bill after a burst pipe devastated her new home and her insurer refused to pay out.