Toby Hadoke reaches the 70th podcast in his quest to interview someone connected with every Doctor Who story. This one starts with a familiar (and informative) face, but then...

OK, it’s no secret who this is - Philip Martin was such an interesting fellow that he couldn’t really be edited down any further. We like a mystery though, so there is a bonus guest who chats via Skype about his involvement with one of Philip’s stories...