Yeah, thanks rudestuff, that's certainly an option. I suppose I would need to go to the US (cost of flights / accommodation and time off work) unless there are FAA training centres and examiners in the UK? Maybe I could train in the UK and just go over when I'm ready, familiarise myself with the area and take the skills test?
I think I'd need over 100 total hours and take another skills test to convert an FAA PPL to Part-FCL? I'm on 69 hours, so I would need a further 31 hours, plus a skills test (plus the direct / indirect costs of going to the US).
hmm...