Insurance claim and driver denies being at fault

As title suggest . Crashed the car the other day into driver who was turning from a junction into a 40 Mile road despite it not being clear to do so. I gave him the chance to settle it privately but he’s adamant he wasn’t at fault ???

So it’s gone through insurance now and I’ve put my claim in.

Basically this my first time going through insurance and was wondering what the process is like

I’m red and he’s blue on the picture .

I haven’t got a dashcam but I do have pictures and recording of the scene and everything.