West Ham co-owner Daniel Kretinsky is facing a monumental battle amid the latest developments in his business empire. The Czech billionaire, who owns a 27 per cent stake in the Hammers, has a portfolio which spans multiple different industries and geographies. And he appears to be ramping up his acquisition strategy, with two major takeovers now on the cards. The first, of embattled French IT firm Atos, could see Kretinsky invest almost £600m. The stakes are even higher in Kretinsky’s bid to buy Royal Mail, in whom he already owns a large minority stake. Royal Mail are believed to be ready to …