Public service union PCS demanded tougher government action against tax dodgers today.
The call came as a joint campaign with UK Uncut prepares to target Starbucks coffee outlets across Britain on Saturday. The firm paid just £8.6 million to Britain in corporation tax over 14 years.
Starbucks met with HM Revenue and Customs (HMRC) and Treasury officials today to discuss the tax it pays, while Chancellor George Osborne claimed the government is spending more money to clamp down on tax avoidance by multinational companies.
The £154m Mr Osborne is pledging for the next two years follows a previous "re-investment" of £900m aimed at recouping £7 billion in tax.
But PCS says these sums are dwarfed by £3bn in cuts to HMRC's budget announced in the spending review in October 2010, including 10,000 job cuts.