Twenty years ago, former Conservative Minister Neil Hamilton and his TV personality wife Christine were arrested over false rape allegations - with documentary maker Louis Theroux filming it all. Their accuser was a woman with a long history of false allegations but Scotland Yard took her seriously. Award-winning Daily Mail crime writer Stephen Wright, who covered the damaging fallout of their high-profile arrests in 2001, talks to the Hamiltons about a case which embarrassed Britain’s biggest police force - and whether detectives failed to learn lessons from it .