US coffee giant Starbucks reportedly paid just £8.6m in corporation tax in the UK over 14 years.
The four-month investigation by news agency Reuters also found the firm had paid nothing in the last three years.
It found Starbucks had generated over £3bn in UK sales since 1998 but had paid less than 1% in corporation tax.
“We have paid and will continue to pay our fair share of taxes in full compliance with all UK tax laws, as we always have,” Starbucks said.