Scheme to avoid tax on offshore billions may have been botched because money was managed from the UK, BBC learns.

The Russian billionaire denied knowledge of the arrangement, saying he was not personally responsible or liable for the alleged tax evasion. View on euronews

Russian oligarch Roman Abramovich used a complex offshore scheme to dodge millions in tax on his fleet of luxury superyachts, leaked documents have revealed. Files from Cyprus Confidential show how Abramovich's companies created a fiction that five of his superyachts were being hired out commercially to avoid VAT payments.