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Expect about £35k for a new F.O. on the North Sea rising to about £55k for a 5 year SFO. Captains start at about £65k rising to £90k + for a long serving capt. In the corporate world salaries are on the up for say 76/155 rated pilots with some companies paying around the £75/80k but it's not easy work. Of course you will need an I.R. for all of this.
The rewards are there but you will probably have to dig deep to find them.
As a VFR pilot with your experience £33k back here would be pretty good.
Your decision.