By the way, do anybody care what would happen (at least psychologically) in case of a massive blackout or cyber-incident?
Just imagine something akin to what happened to the Iberian peninsula a few months ago, the country goes into flame quickly preventing recovery and then it's on. Most of the systems the UK has to control its population are inoperable.
I am pretty sure it is in the back of the mind of the UK leaders when they negotiate with Russia and China....