Originally Posted by
efhfpilot
Would a CPL and IR level of theory be enough for the North Sea?
No.
The NS operators are not interested in employing professional FOs. ie pilots who are going to remain as FOs.
They are looking to employ pilots who will eventually be promoted to captains. Therefore, you'll need ATPL theory.
(FYI, the current system of CPL+IR=ATPL is about to be phased out, if it hasn't been already.)