Sports Direct, the British retail behemoth led by billionaire Mike Ashley, has initiated a High Court action against the Irish tax authority.  Sportsdirect.com Retail Limited, a British vehicle that acts as the overall parent company for dozens of connected firms, has filed a judicial review application against the Revenue Commissioners, court filings show. The company has retained the Irish commercial law firm William Fry to represent it in the case. A grounding affidavit was filed with the court yesterday.  A judicial review challenges the decision-making processes of administrative bodies or lower courts. In this case, it is challenging a decision…