After the EU Elections, Caroline Lucas one of our two green MEPs, was interviewed on the BBC and she complained that the regional PR system had cost her party a number of seats.Had it been worked out nationally, her party would have had more seats, true, but the BNP would have had quite a few more also. I am guessing that she would not have liked that too much.
One more proof to show that Greens and joined up thinking do not sit easily with each other!