Google Inc faces another grilling over its tax affairs from a committee of British lawmakers on Thursday who have called the company back after questions were raised about testimony given in an earlier hearing. Corporate tax avoidance has become a major issue in Britain, where there are concerns over rising government debt and accusations from lawmakers that the UK tax authority has adopted a light touch approach to taxing big businesses. Google's Northern Europe boss, Matt Brittin, was called to testify to the Public Accounts Committee (PAC) in November about Google's low UK tax bill. From 2006 to 2011, Google generated $18 billion in revenues from the UK, according to statutory filings, and paid just $16 million in taxes. Brittin told the PAC Google was not taxed on the profits of its core advertising business in Britain, because all UK sales were conducted from Ireland . Reuters revealed that the Internet search giant had described its London offices on its website