Hi Aris
Are you near a Morrisons Supermarket? if so they sell pork skin under guise of pork crackling it has a good layer of back fat on it & would be worth a look. if after taking off the fat you want to use the skin in your recipe boil it first for about 45 minutes, cool then mince it down fine & mix in with your meats.
Hope this helps
Regards
sausagemaker