I've always considered myself Welsh......and nothing else! And that'll never change.
I don't feel Spanish in any way........though I do have some things in common with them. Some things I don't. I also have things in common with Brits as well, and other things I don't.
I'm just me and I take people as I find them. Their nationality, colour, religion, or sexual orientation have never come into it. So I don't think Spanish are great and Brits are bad. There's good and bad elements in both.
My issue is that I'm wary of Brits here because I've seen first hand (both on a personal and business level) that they tend to bring their problems with them. Then create even more when they're actually here.
It just doesn't reflect well on those of us who have to live here permanently.....because after all, we're guests in somebody else's country.