I havent watched these new ones but i saw all of the ones when they were on Channel 4 tv. IIRC they were on consecutive nights over the course of almost a week. Our entire house was glued to the telly. It was 'gruesome' at first in the sence that it had a slightly morbid feel to it but once that was out of the way it seemed almost like any documentary. It didnt seem really 'gross' or anything mainly because it was done in a surgical and controlled manner. What emergency services see each day would really make difficult viewing.