As an experiment I looked through the news feeds of all UK police forces for the fortnight following the first day of the Alliston trial, and compiled details of the serious road incidents they cited.
It found that over the period, eight pedestrians had been killed after being hit by car drivers, and 27 were seriously injured, in five of these cases the motorist fleeing the scene. Two cyclists were killed (one in a hit and run) and four badly hurt, two again by drivers who did not stop.
Three motorcyclists died after colliding with cars, and 26 people in motor vehicles died in various other collisions (I excluded single-vehicle crashes).
Other incidents included a 12-year-old girl pushed off her bike by a man, after which she was almost hit and killed by a car, and a six-year-old boy run over and trapped under a mobility scooter, the driver of which then left the scene (at a presumably sedate pace)