I've spoken to an accountant, and he said much the same thing. Recent changes in the law mean that Ltd Co status actually doesn't protect you (or your assets) if you are found to be at fault - and it is easier (and cheaper) to set up as a Sole Trader.
As far as I can tell, at least initially, from a taxation point of view ST would be simpler to set-up and manage.
And from a risk point of view, I think I'll have to rely on good insurance, lots of training, and whatever common sense is left between my ears (not necessarily in that order)!!