But Richard Murphy, an accountant who runs a consultancy called Tax Research, said it remained unclear why RWE, npower's parent company, would lend money to its UK business via Malta "unless tax avoidance was its motive.
Some of the destinations were none the wiser, like H&R Block, a tax consultancy, receiving IRS traffic.
But she said many companies also require tax consultancy and legal advice.
Tax consultancy Ernst & Young, and even the HMRC were the big bad wolves in committee chairman Margeret Hodge MP's pantomime of blustering.
In 2014, HMRC won its eighth tribunal case against the tax consultancy NT Advisors, saying its pursuit of the company had protected £750m in tax.
He was a partner in the tax consultancy firm of Nathan Berkman and Co. for over fifty years, and founded Continental Stock Transfer and Trust Company, a family-owned business, in 1964.
The two men, who declined to return calls from the Observer, run a tax consultancy called NT Advisors that lists an office in London's West End.
His father is a managing director at Schonbraun McCann Group, a real estate advisory firm in New York, where he specializes in property tax consultancy.
All that is clear, says KPMG, a tax consultancy, is that the law will squeeze both expats and their employers.In this section A sadder, wiser union The view from the top, and bottom SABMiller's tale The coming squeeze?
One idea advanced by District Economics Group, a tax consultancy in Washington, is to treat multinational corporations the way most states treat multi-state companies: by apportioning global profits according to percentage of sales made in each country, and taxing just the U.S. amount.
