Hi,
Thanks for the answers everyone, it is what I thought in regards to flying G Reg Multi's on an FAA licence... I'd be limited to VFR clearances and VMC weather with the exception of outside controlled airspace where I could fly in IMC.
Shouldn't matter a great deal anyway as I've just realised that I could go up to Gatwick a week after my flight home and have it issued within the same day (counter service). But before I go to Gatwick I'm probably going to do the checkout.
I'm going to double check with the CAA, just in case though!
Best wishes,
Charlie Zulu.