Good driving? Good video? Yes, it is a good video if you want a cure for insomnia, far better than counting sheep! As for the driving, It was filmed in Wymondham, not too far away from Norfolk and in your neck of the woods. I do not know how familiar you are with that location or aware of the traffic pattern.
Some drivers are inexperienced, incompetent, complacent and impatient and maybe all four. You have such a driver behind you and he is familiar with the area and traffic pattern. He sees you and feels it safe to overtake but has failed to spot the cyclists and starts to overtake. From this point, there are a number of possible endings and most do not have a happy ending!
He overtakes and pulls in and then slams the anchors on because he finally sees the cyclists but someone is going to get hurt; it may be you because you cannot stop in time, the cyclists or maybe all three.
Completes his overtake and finally spots the cyclists but still feeling that it is safe to overtake does so but then sees the oncoming car. That will not be pretty!
He overtakes you but the cyclists stop suddenly, maybe the kissing of wheels or a mechanical breakdown. What happens next is anyone's guess!
I bet you want to know what I would do. I can only give you a hypothetical answer to a hypothetical question! Move closer to the cyclists and put my hazard lights on, by this time, the bunch may have heard my engine and singled out. If they have then I would wait for a safe place to overtake.
OP, what was the point of your thread? Was it an ego boost, praise, a piece of cake or Brownie points?