Thx very muchly for all the pointers. You are right, in that my small regex didn't pick up all the paragraph instances (endings with question marks etc) - but surprisingly there were very few and I figured how to mod the regex to pick up a question mark. I seem to be able to sort out small changes but have a lot of trouble trying to get one regex to pick up everything
I'll trial the regexes here and see what the results are. Thx again.