While we await the sentence of the court (which, as the weapon was a motor vehicle, is unlikely to be condign) perhaps it would be instructive to consider how best to avoid a similar confrontation at a similar road junction.
I am not familiar with the scene of the crime, and we have only the brief court report about what happened, but there is apparently a roundabout with centre islands at the entrances. The assailant overtook the cyclist at one of these centre islands and passed too close for safety.
How to avoid this? First thing I would suggest is a bar mirror for a brief observation 50 to 100 metres away from the junction to see what if anything is about to enter the same junction. Second thing to do, having checked the mirror and turned the head, would be to move out to the "prime" riding position (60 cms from the kerb according to the woeful Highway Code, 100 cms according to experienced cyclists, but in my own opinion in such a situation, preferably the centre of the relevant lane, to block any following vehicles).
I would advise this position also on approaching a left hand bend, which is what in effect we encounter at the entrance to a roundabout, with the added danger that drivers will be looking to their right to give way to traffic already on the roundabout. If the cyclist is positioned in the middle of the lane the following vehicle cannot overtake, and the driver, looking to the right, will still be able to see the cyclist out of the corner of his eye (assuming no tunnel vision, mobile phone to left ear, or drug induced blindness, of course).
There is the possibility, if there has been a preceding incident causing road rage, that the driver will deliberately run down the centre-of-lane cyclist, as the assailant did in the instant case at the exit from the roundabout. I would suggest that the best thing to do, if at all possible, after an incident of the near-miss kind is to dismount at the side of the road and wave the offender on with a fascetious grand Regency fop type gesture, but with only two fingers extended in a horizontal V sign. Be ready of course to remount and race off in the opposite direction in case such a give-way gesture is wrongly (or should I say correctly) interpreted.