Why was key evidence ignored in the Suzy Lamplugh case?

What happened to Suzy Lamplugh? It’s a painful question her family and the police have been asking themselves for 40 years. The 25-year-old estate agent vanished four decades ago this week after leaving her office in Fulham to meet a client – the mysterious “Mr Kipper”. It’s now hoped previously ignored witness testimony could help solve the high profile cold case - but why wasn’t this potentially key evidence taken seriously at the time? Mhari Aurora and Sky’s crime commentator Martin Brunt discuss the impact of the case on women’s safety, whether there were police failings and what lessons – if any – have been learned.