I was looking more at if anything happened to me, that my wife would get the same treatment like a British wife, I have a good army pension and I would hope my wife would get it after I've died like a British wife would, a British person would get a bereavement fund like I did when my wife died 8 years ago, I got a lump sum and a monthly payment for one year
I have a Thai marriage license, I made inquiries, with a local register, to obtain a British marriage you would have to apply to get married in England🏴