..and as for Japan - my borther has just come back from a year of work there (he has also worked in China and Taiwan)
the work culture is utterly repressive.
people at his company are fired on the slightest whim - the person who replaced him was fired only three months after my brother left (meaning the job had had three different people in the same year)
the work culture where you perpetually fear for your job is not an innovative one - no-on dare raise their head above the parapet.
the company (as sakura points out) s typical of Japanese firms in employing overseas talent for the non-administrative roles.
Foxconn - the manafacturer of the Iphone amongst other things - was a much nicer employer by far, with a more gentle attitude to all staff. They also employ foreigners in expert capacities, as do many of the tech companies out East...
a dsproportionately high n%age of he worlds patents are still filed by UK citizens, even though they may work overseas.