Just watched the start of the vid and from what I can see a dingle dangle is what we would call a hair rig? The hook is presented just upline from the bait, rather than hooked into the bait itself. Don't see why it wouldn't work for larger species in the UK and might reduce unwanted bycatch of smaller species.
I've seen (but not used) a similar technique for livebaiting with a bridle, where the hook is presented off the bridle instead of through the livebait.