I'm not sure that we can compare our wages with what the North Sea guys get. They generally fly bigger, more complex aircraft, have full IFR ratings and fly 7-800 hours a year quite often in atrocious weather. It's like saying that 737 crews should be paid the same as 777 crews.
You could probably get a good deal on the North Sea at the moment if the shortage is as bad as it seems. Have you applied yet? Me, I'm happy working 4 on, 4 off.
BFN