probably a close call as the parent is in japan.
either way in the current climate I'd call their bluff.
Man how is that a close call? Does Media Molecule pay its own taxes for operating in the UK? What I'm saying is that if Media Molecule up and left, it would remove part of the active work force, take away all the taxes they were paying, and remove a source of exported income for the UK(!).
Media Molecule being relocated to Vancouver would cost the UK a lot more money than MM paying lower taxes, and that's a pretty strong bargaining chip.
I don't think the government will give in either, but that doesn't mean it's not legitimate on Sony and Activision's ends.