The speech follows other appearances at high-profile events in Russia by Tony Blair and Peter Mandelson suggesting that senior figures from the last Labour Government have maintained close links
with Russia despite the UK's frosty relations with Moscow.
Blair and Mandelson have spoken at Troika-sponsored events, but it has refused to reveal their fees. Sberbank is run by German Gref, one of Mr Putin's closest allies and a close friend of Lord
The Commons Register also reveals that Mr Brown was paid £61,000 for a speech to another Russian bank, Alfa, last November.