I was waiting behind a cyclist as it wasn't safe to overtake on the blind crest which we were approaching. This driver came up behind me, waited a moment, then when it realised I wasn't going to overtake, they decided to pull out with no view of the road ahead. As it came over the crest, 2 cars were travelling towards us and the first car, a Golf, was force into the verge to avoid a collision. This driver made no attempt to stop and check everyone was ok. This all happened on a 60 mph road.
Here's the video