The government has tended to steer clear of “naming and shaming” companies, but Gareth Thomas, the trade minister, on Wednesday called on three chains to join the ethical trading initiative (ETI), an alliance to promote corporate codes of practice on supply chains...Mr Thomas praised the ETI, but said its membership base needed to be strengthened. “Arcadia – BHS and Burton [part of the Arcadia group] – are not part of the ETI. B&Q is another. I know John Lewis does check its supply chains and does a lot of good work, but other members could learn a lot [from John Lewis if it were to join the ETI],” the minister said. “I am calling on all three companies to sign up to ETI today.”...Arcadia has a code of conduct “we think is more advanced than the ETI”, the billionaire retailer [Sir Philip Green, CEO of Arcadia] said.