z.holtman wrote:Would rather be in Spain! Do I need the citezenship in the U.K to live in Spain?
No, but it would mean that you would have fewer immigration hoops to jump through. It would also mean that you could easily return to live in (or spend extended periods in) the UK in the future if you want to - with or without your wife (sometimes things don't go as we expect in life).
How long have you been in the UK? Usually a spouse of a British citizen can apply for naturalisation after 3 years of legal residence provided that the applicant has indefinite leave to remain in the UK at the time of the application. So if you've been in the UK for a couple of years already, it might well be worth waiting. Applications for naturalisation are being decided relatively quickly at present.
But you would also need to consider the effect that naturalisation would have on your present citizenship - that depends on the law of your country of citizenship. For example, if you are from the US, Canada, Australia, New Zealand (or many other countries) you would be able to retain it. If you are from South Africa you can apply to retain it. And so on.