The Tesco supermarket chain is involved in litigation such as the "Ward v Tesco Stores Ltd" and "Tesco Supermarkets Ltd v Nattrass" cases. Tesco have been criticised for aggressively pursuing critics of the company in Thailand. Writer and former MP Jit Siratranont faced up to two years in jail and a £16.4 million libel damages claim for saying that Tesco was expanding aggressively at the expense of small local retailers. Tesco served him with writs for criminal defamation and civil libel. The Thai court dismissed the case, ruling that the criticism made by the defendant was 'in good faith by way of fair comment on any person or thing subjected to public criticism'.