What happened to the other man who took tea with Alexander Litvinenko?

As the evidence against Russian secret agents Andrei Lugovoi and Dmitry Kovtun continues to mount at the Litvinenko inquiry – closing statements are due at the end of the month – the other spook who met the former spy on the day he was poisoned has slipped back into the shadows.

That’s a pity. I would love to know more about Mario Scaramella, the man who claims he warned Alexander Litvinenko that he – and Scaramella – were on a list of people the Kremlin wanted killed.