Problem solved - scrapped it and started from the beginning.

For the other noobs, the lesson here is that you don't need to chop up your objects to UV them. For some reason I had it in my head that I had to turn each surface into its own object. As Dave alluded to, it was way overly complex for what it needed to be.

I'm simply selecting the faces of the object I'd like to UV now, without breaking it up. Worked like a charm.

Thanks for taking a stab at it Dave..

Cheers