I'm in the UK, I've eaten most of those but not in taco's
2) I quite like a tongue sandwich. 3) Tripe is not my cup of tea but I've had it 4) Fried pork blood, we have a thing here called black pudding (it's congealed blood soaked in oats, then fried, it's damn good and apparenly good for you). 6) Lots of times, don't see it much now, my nan lived on it 7) Used in stocks 10) Pork Scratchings are huge here also damn good but really bad for you.
Traditional English cuisine ate everything.
Chitlings are pretty grim though.