We represented the Financial Ombudsman Service (FOS) in proceedings, which was referred to by 'The Lawyer' magazine as one of the ten most important cases to be heard in 2011. We successfully defended the judicial review proceedings brought by the British Bankers Association (BBA) over the handling of payment protection insurance (PPI) claims and the regulations governing how they should be sold. The case arose against the background of tens of thousands of complaints to the FSA and FOS about PPI and the way British banks were miss-selling PPI policies and rejecting many claims. The Financial Services Authority was also a defendant to the action. The High Court ruled against the BBA and endorsed the Regulators' principle based approach to the handling of PPI complaints. The failure of the claim led to the payment of compensation reported to be in excess of £20 billion. The Judgment received a great deal of media coverage and extensive legal commentary.