Posted: 28/03/2013 at 17:44
Hi Ziggy, I moved my fatsia two years ago. I did cut mine down a by about a third as I was advised to at the time and was able to take cuttings from what I cut off. the idea being that should the main plant not survive the move at least I'd have another plant to replace it.
Fortunately the plant did survive and I have 5 new, healthy plants to boot 
What I will say is that we were pleasantly surprised how shallow the roots actually where considering it was such a mature plant but boy was it heavy! My husband and I move it between us and there were times when we didn't think we were going to be able to move it. Well worth the hard work though as it looks much better where it is now. Good luck