Not quite sure what happened with multiquote not working above so my apologies. So thank you to everyone who replied above, everything you've said is greatly appreciated.
Hot LZ, thank you, its why I chose rotary in the first place really.
I see what you mean and definitely agree that it would be a great environment to learn the basics and get good at IR flying (I can't say I really like it from what I've done so far so I guess all the more reason to experience more of it).
I've heard that offshore can be a bit of a trap for pilots (mostly for the money and work-life balance) but is it a relatively easy transition to come back to get an onshore job especially if all I would have would be offshore P2 hours? The company I interviewed for says they do offer PICUS experience but would this say count as proper P1 hours in the eyes of HEMS/NPAS?
The main reason why I'm so reluctant to go offshore is that all the onshore companies state they want lots and lots of 'relevant experience' and I'm not sure that only having offshore counts for that? In your opinion based off of experience and making me a more desirable pilot would you say offshore experience would be looked on more favourably than flying onshore tours and potentially instructing across the country?
Rudestuff, thank you very much for you answers, that makes me rather relieved regarding my first question. I had a feeling that having the ATPL would certainly help but I wasn't sure if not having it would be a severe hindrance so thank you again.