I had a similar incident about ten years back... passing a stationary queue of traffic, a car stopped to let a car out from a side turning on the right, I slowed right down and when I was alongside the car at the front decided the driver of the car in the side turning wasn't about to emerge since she'd had ample time to a) see me and b) start her manoeuvre. At which point she accelerated out across the road.
We came to a halt simultaneously, with my radiator wrecked by her front wing.
Despite having priority and being on my side of the road I gave up on claiming it was entirely her fault since I
had been overtaking at a junction and had no witnesses. So in the end it went 50:50.
Oddly, she claimed I'd been overtaking up the inside (in the cycle lane)... I never figured out whether she concocted that story as an excuse as to why she couldn't see me, or if she genuinely thought that was what had happened.