Update;
Thanks for the continued feedback folks;
personally I am ruling out a big cat, as I am 6 miles from leeds, 4 from wetherby, and 4 from harrogate - The chance of one not being seen, shot or filmed in such a busy busy area is so remote.
As for the rip regarding kites;
Thanks that explains alot - I am directly across the valley from harewood estate, (1.5 miles as the cros flys) who released alot of kites, and it is NOT unusual to see 7-8 of them circling places in the valley, especially in winter, I often get pairs gliding up the thermals up my hillside.
A few questions asked of a gamekeeper from another estate, confirm that 5-8 would be needed to eat that much flesh in the time given, but as their is over 50 nesting within 5 miles, and their was possibly as much as 4-5 hours to do it in, that stripping could be attributed to Kites. - Leave 2 questions, How they were killed, and how the clean cut of flesh on the face was achieved.
The neck was broken from behind, hence me being skeptical of dogs, who IME also rip the throat out often. - Looks like a single Hard bite to the neck.
The Knakerman was perpleced picking the corpse up, said it felt crushed, Scraped back the skin around the neck wounds and it looks like a big bite, 4 punctures, probably from two bites, each about 5mm Dia, breaking the neck from the behind.
Obviously will never know on the stripped carcase.
Still does not answer what killed it - my gut says big dogs.
Worth mentioning, My Better half lived in Tanzania in her youth and I've been talking it over, and it does not strike as big cat behaviour at all really, especially given the proximity to woodland, trees and secluded higher ground, the kills are in the open / semi open, and the eating was not done in a safe location - you could sneak up in the rough on the carcase - Not cat like at all.