LONDON (Reuters) – Britain on Thursday imposed sanctions on two Russian Oligarchs, Alisher Usmanov, a businessman worth more than $18 billion and former deputy prime minister Igor Shuvalov. Usmanov’s name first came to public prominence in Britain when he invested in Premier League soccer clubs, first with a 30% stake in Arsenal and then with a sponsorship deal at Everton that was suspended earlier this week. Shuvalov headed Russia’s successful bid for the 2018 soccer World Cup and chairs the management board of Russian bank VEB, itself under Western sanctions. “Sanctioning Usmanov and Shuvalo…