Hey Phil J,
Gulf Helicopters in Qatar regularly brings in ex-pat co-pilots and the requirements are not that onerous. Roughly 1000 hrs time on helos, a turbine rating (and an Instrument Rating as a nice to have). If you don't have a B212/412 rating you will be required to sign a 2 year bond.
Rotation is 6:6 or 8:4 with opportunities for extra work overs. Pay is not great for F.O's but doesn't suck either as it's tax free.
Check their website as they are actively recruiting at the moment.