My Pinay wife has a Residencia which permits her stay forever in Spain. I get extra pension being married. The UK Gov pay about £2,000 p.a. for my wife's medical cover in Spain, she has a Nat. Ins, Number in UK. She can travel and live in any Schengen state BUT, a trip to UK or even Gibraltar means making an appointment at the UK consulate in Madrid (700 mile round trip) paying 100 euros for a UK visa application or 150 euros for a days shopping in Gib, a lengthy interview from which I would be excluded and even then she might be refused.
In six months, my wife will have had residence status in Spain for 2 years, she will then be able to apply for Spanish Nationality and a passport. So after that she will be able to visit my ‘homeland’.