There seems to be a lot of confusion here between Dyson the man (who is uk tax resident and paid 128 million pounds tax last year to the exchequer) and Dyson the company(record annual profits of £1.1bn for 2018) that pays tax on turnover in whatever country sales occur in. This is a subtlety overlooked by leftward leaning persons, whose knowledge of finance and accounting is so abysmal they trash the economy each time they are in power(eg Beneficent Brown flogging off a chunk of the UK gold reserves for a third of it's value)

As an individual Mr Dyson can move his assets wherever he wishes, for whatever reasons motivate him. This right is embedded in EU legislation. He employs 12000 worldwide, roughly 33% in UK. Like any astute business man he makes his widgets where they create most profit.
How much do those decrying him here pay in tax, or employ, or even have the nous to create anything?