Thanks Irishguy.
I have checked pressure a couple of times over last 24 hours & it seems to be holding up OK. So does the slime stay liquid then? The AA guy saids its water soluable, but in any case I should get new tube ASAP. You mention the first couple of miles riding to re-distribute the stuff: can I expect nasty vibrations for a few minutes, or will this continue until permenant repair is carried out??