Blackadder
Brighton Bhuna Boy
I only know that my mother-in-law who lives in France can vote here (postal) nationally but can only vote locally in France. It got reduced recently from 20 years to 15 from your last electoral registration. Often people complaint because the paperwork is delayed and their votes are missed.
All this small details on moneys and benefits, I think the UK government sends out a lot in set benefits like winter fuel payments that compare to child benefit payments to registered parents from the UK that live else where in the Euro zone.
Staying in another county if we leave would be down to what Visa requirements/rules that would then have to be agreed and negotiated - but I imagine they could lose any medical benefits and be liable for charges and taxes that may well be currently free.
Thanks