Police find body in bag at MI6 man's London flat

[Jan Klimkowski]

A further sign of Williams’s importance was that he had been assigned to live at 36 Alderney Street – a high-security apartment in Pimlico that MI6 would have previously used to debrief one of its agents or a defector. Like all safe houses, it was functionally furnished – but with a direct phone line to MI6 headquarters less than a mile away. Williams would have been cautioned about who he was allowed to entertain at home.

OK - this changes mucho.

Codebreakers are important, but the secret services see them as functionaries, not players.

36 Alderney Street sounds like a place for players, not functionaries.

In 2003, he spent six months at Menwith Hill, the ultra-secret RAF station in Yorkshire. In reality, it is a transplant of the United States; the only connection with Britain is the detachment of Ministry of Defence police that patrols the perimeter.

It was here that Williams learned how to analyse the findings from Menwith Hill’s radomes – the imposing white structures resembling gigantic golf balls that intercept coded messages from satellite communication systems, which are then broken before being sent to GCHQ for further analysis.

In 2006, Williams also spent time at Fort Meade in Maryland, home of the United States’ National Security Agency, GCHQ’s partner in global surveillance. As GCHQ gathers secret intelligence from Europe, Africa and Russia west of the Ural Mountains, NSA covers east of the mountains, including Japan and China, the Pacific and South America. As a new arrival, Williams was invited to listen to recordings of Osama bin Laden talking to his mother on his satellite phone in the aftermath of 9/11.

These American links are strong and significant (ignoring the tosh about Osama and his mom).

Perhaps Williams broke a code he wasn't meant to break.

Perhaps he was the signals operator for deep black covert ops.

The way this plays out, and the degree of unattributable Kompromat briefing, will be revealing.