He also said that a source in Russia warned him of attempts against his life even before British police told him of the latest plot.
An assassin would visit London to meet with him and kill him openly, claiming it was over a business dispute.
Berezovsky, a close associate of late former Russian president Boris Yeltsin, obtained political asylum in Britain in 2003. London has repeatedly refused Moscow's request for him to be extradited to face fraud charges.
Moscow renewed an extradition request for Berezovsky after his call in April for "direct action" to oust Putin.
Berezovsky was among the first to point the finger at the Kremlin after Litvinenko, a friend and associate, fell violently ill on Nov. 1 last year in London of what turned out to be poisoning from radioactive polonium. He died three weeks later.
RSS