Political attacks on tax avoidance could damage Britain, CBI's Roger Carr warns However, he stressed that the CBI did "not condone abusive tax avoidance" and that management should use judgment to decide what is acceptable. The tax test is simple for all businesses - if management practice was revealed on the front page of a daily tabloid, would we be ashamed, concerned, regretful, would our brand be damaged? Sir Roger added that business was a huge contributor to the country's tax revenues. "The tax contribution from business last year was £161bn - 30pc of all tax receipts," he said . He added that corporate reputation was "the best weapon in the armoury in fighting the tax battle" and that demanding transparency over businesses" affairs was a powerful tool. "Reputation, once lost, is difficult, sometimes impossible, to recover," Sir Roger said. Google, which has come under scrutiny alongside Starbucks and Amazon, was represented at yesterday's Downing Street meeting by chief executive Eric Schmidt. However, the Prime Minister's official spokesman said concerns about Google's tax arrangements would not be raised. "We don't talk about individuals" or individual companies" tax affairs," he said.