Excellent, thanks for that. I too am in pretty much the same boat - our mortgage isn't quite as large and neither are our savings, being just under £100k.
But I wonder what happens to a mortage (a normal mortgage, no savings) if a bank 'goes bust' - is it forgotten about (as if...), or does one have to still pay. I ask because if we had our savings and mortgage in separate institutions and (say) they both went bust, then our savings would be 'guaranteed', whilst potentially our mortgage would be written off... Now I don't suppose that is the case at all, and that someone somewhere would pursue every last penny of the mortgage, but I do wonder - and if the 'best case scenario' is true it may well be worth putting the savings elsewhere for a few months (or years?!) until things calm down again.
Many thanks for your help. I just happened upon this forum but its something I have been wondering about for a while now.
Miles