I'd question that NATS video and the aircraft tracks depicted. They look generic, to be honest.
Also, a timely incident for the CAA on home turf around the same time as they release their report on drone collisions. Are they going to do this (stop all movements) every time there's a sighting in future? I doubt it.
Yes, shame on the fool for flying their drone so close to Gatwick. They should be punished accordingly. But making such a hoohah about it to reinforce your argument that you want more restrictions on Phantoms and Mavics, I would argue, actually weakens your case.