MI6 Spies Appear At Codebreaker Death Inquest

It is believed, however not confirmed, that Mr Williams was intricately involved in developing new innovation to allow the Intelligence Services to monitor internet-based phone calls - so-called Voice Over Internet Protocol communication.

VOiP phone calls, including services like Skype, are increasingly replacing traditional 'hard-wired' telephone calls. As a consequence the Intelligence Services are establishing new ways to intercept such calls.