The cyclist was NOT in violation of Rule 68. The rider is not obligated to move over, at all.
The van driver showed his aggression at being forced to obey the law, following the rider until safe to overtake, by sideswiping the rider.
Let's get a couple things clear here;
1, i'm not a road cyclist. I've been a long term motorcyclist though, and we suffer the same dangers all the time.
2, motorists need to get it through their heads that other road users don't have the same rights as them. "Oh but they don't pay road tax". Um, actually...they do. Did you know that "road tax" doesn't actually pay for the upkeep of the roads? That's covered by council tax, you know, the tax that the cyclist pays too? The same tax that horse riders pay to.. And joggers..And anyone else you want to try to run over.
They have a legal right to be on the road, they have a legal right to road safety. And you are at law to not endanger them.
And before anyone kicks off about road tax, road tax was abolished in 1937. What you pay is Vehicle Excise Duty, VED is essentially a tax on pollution, which is why cyclists don't pay it. VED gets paid into the UK's general treasury, and does not pay for the upkeep of roads.