[exasperated]

I've just had a crunch in my new XC40. Some idiot was tanking down a congested side road and didn't see me already in the middle of it, carefully pulling out of another road, just as he rounded the slight bend at speed. I know it's classed as my fault, but if I had had a dash cam, the situation may be different as I was already in the road. (He's also claiming whiplash too, surprise surprise).
Anyway, I naturally now want to get a dash cam and after reading the other thread, I'm wondering if it's possible and which one to get if it is?
I would like one with a screen and one on which I can set markers ...can anyone help please? Has anyone successfully fitted a dash cam to an XC40 yet?