Alternatively: get an ITIN (individual taxpayer ID number) from the US IRS, and jump through the hoops under the UK-USA double taxation treaty to declare yourse

Alternatively: get an ITIN (individual taxpayer ID number) from the US IRS, and jump through the hoops under the UK-USA double taxation treaty to declare yourself as a UK taxpayer. Double taxation treaties are bilateral arrangements between countries so that taxpayers can declare one of the signatory countries to be their country of residence and pay income tax earned in the other place in their home country. Result: you get back the US withholding tax money, although you have a larger income and consequently pay more tax to HMRC.