zlacker

"Investment" here seems to be operations and personnel, resulting in taxes going to the UK government.

They aren't making $630 billion per year in money off of those companies, but the operating income means they're getting taxes on that $630 billion (income tax from company and employees, VAT for purchases, etc.) and the personnel working in the UK are probably spending most of that money in the UK (velocity of money theory comes into play here).

The resulting economic benefit for the UK government is enough that they'd notice the drop if all that started to transition away.

>>Root_D+(OP)
The UK government is currently gas lighting the public into ignoring 60k+ in quarterly job losses and is historically unpopular. Despite that it is railroading orwellian attacks against rights and freedoms of the citizenry, all of which without a mandate. This is a kamikaze government of austerity-obsessed foreign agent traitors. The only thing they would be upset about in your scenario is about the inconvenience it would cause those trillion dollar American companies.