Litvinenko added to London's Spy Walk

The Spy Walk in London's Mayfair area is one of the most popular as it tells the story of the Cold War.

Now there is a new addition to the route - a stop near the Itsu sushi bar in Piccadilly.

Russian dissident Alexander Litvinenko had lunch there soon after he was apparently poisoned by radioactive polonium 210, five years ago.

Dmitri Poltavski reports.