i dont understand why not and i dont understand what thats got to do with the tiling/grout manslaughter case.
on the point of tiles falling a killing someone the question is where do you stop? what about people who put up shelves or doors or kitchen cabinets? they could all kill someone if they fell.
such legislation would mean the end of DIY. you would not be allowed to anything.
i would be interested to learn more about this death of the old lady case, i cant find anything about it on the internet and being such an unusual case, i would expect to find some information. the OP said he heard it from someone, is it possible something has been lost in translation?
thanks
Urban myth perhaps....