How BBC interview changed Princess Diana for the worse Entertainment Tue, May 25, 2021 Princess Diana "very close" friend had witnessed how the Martin Bashir BBC interview had changed her for the worse. Royal Rota podcast hosts Lizzie Robinson and Chris Ship spoke about how the late Princess of Wales’ paranoia was fueled following the famous 1995 interview. Lizzie said: "I had a chat with one of Diana's very close friends, Dr James Colthurst. Dr Colthurst was the friend that did the interviews with her for the Andrew Morton book. "So he used to go, ask the questions, record them and then take the recordings over to Andrew Morton to write up.