Will Oxbridge accept SAT?

So I’m in my second last year of High School in South Africa and I would like to study oversees. I haven’t decided yet between studying in the US or the UK yet but I found out that to apply to any university in both countries I need opposite requirement tests. So I was wondering, let’s say I only take SAT tests and apply those scores to both US universities and Uk universities. Will the ones in the UK accept the SAT scores or do I have to give specifically A-levels and vice versa.

Thank you

A Levels are accepted in both the US and the UK. SAT is optional for the UK and necessary for the US (although you could do the ACT instead). I suggest focus on dominating your A Levels and then doing the SAT on too and applying for both which is what I did