Obviously most of the trouble is from poorly-aimed poorly fitted bulbs, dodgy HID kits in cars not meant to have them, the 'front fog' brigade (bless 'em) and now the searing light emitted from LED clusters.
So I seem to have found the answer that suits my needs.

Seat Leon's - you can piss right off with your LED headlamps.
Range Roonies - Ditto
HID 'kits' - Pah
Footbrake botherer's in queues - Pfft
Foglight Buffoon's - Meh
We use these glasses at work, they're designed to increase your vision in poorly-lit environments and I hadn't thought about trying them for night driving. They don't impede your general vision and do a great job of reducing the glare from oncoming lights, makes for much more comfort.
Downsides: they're a bit 'Ali-G' but I don't care what I look like.
Technical Stuff: Lens color: amber - absorbs blue color in the visible spectrum increasing contrasting effect. Recommended for drivers, construction workers, and airport employees in conditions of insufficient visibility.