To be fair, the traditional place to "enjoy" pork scratchings is the pub to accompany a lot of beer, much like a donner kebab . They are pretty horrid otherwise so I'm with ken and Co.
Scampi fries ftw!
The stuff in the Crunchie is puff candy (at least that's what it's called up here).
You can make it at home dead easy, too!
http://www.cutoutandkeep.net/projects/puff_candy_cinder_toffee