The plot thickens - or, rather, coagulates - when we get to another meeting Litvinenko had on Nov. 1: with Andrei Lugovoi and some character known only as "Vladimir."
According to Lugovoi's interview to the liberal radio station Echo of Moscow, it was his friend Dmitry Kovtun, not "Vladimir." See Lugovoi and Kovtun's photo atken during this interview at http://www.kommersant.ru/photo-gallery.html?id=724841&isid=10324&pics_id=93906&keepgalle ry=2529
