By Theo Normanton in London Oliver Hughes, the British former CEO of Russian digital bank Tinkoff, has publicly rejected accusations by the bank’s former owner Oleg Tinkov that he is still managing operations at the bank behind the scenes in breach of UK sanctions. Hughes left the bank in March after Russia’s invasion of Ukraine. In July, a new law was introduced in the UK prohibiting the provision of management or business consultancy to any Russian companies. As a result, Hughes said in a blog post published Thursday, he “definitively cut the few remaining ties I had to the Russian business”…