There's at least two Cybertrucks in the UK right now, but one of those was a foreign national who had it seized for some reason. Think they're still in a legal grey area though and you have to jump through a few hoops to have them legally on the road.
I think that cybertuck is not road legal in the UK (I mean I expect it's same as in the EU).
So the only way it could be there on the road would be that it's still registered somewhere where it's legal (most probably the US) and take some risks (and maybe some bribes here and there), since not every police officer knows the law perfectly and you can get away a couple of times, probably, especially if seen as a tourist.
There's very little chance or bribing UK officers. That's likely a trip straight to jail. I believe one of the two in the UK is registered in Eastern Europe somewhere - Albania or something. I'm not sure what makes it illegal specifically but I think you can drive some tanks on the road as long as they have the proper insurance. I don't see how it's different from those or agricultural vehicles like tractors and other such vehicles. Maybe the loophole is foreign based cars can be insured to drive over here temporarily but not long term.
Since they've got rid of that rear screen they should offer a three seater in the front. They really shouldn't have got rid of that or offered it as an optional extra.
How's the Soundsystem in yours? Elon was hyping it up as being one of best sounding across all cars, but he has a habbit of hyperbole

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I think a bench seat in the Cybertruck would be dope. It is the least BJ friendly vehicle I’ve ever owned which is honestly unacceptable for a self driving vehicle. Safety reasons and all that… Whatever.
There are 15 speakers in the Cybertruck. It sounds amazing. The subwoofers use the vehicle’s frame to amplify the bass. It is probably the best stock sound system ever in a vehicle you can buy for under $200K.
They’re stockpiling Cybercab castings at the Texas plant. I’m guessing we’ll start seeing Cybercabs roll off the line in another couple months. Hopefully Bitcoin’s price rises before they start taking orders.
It's something I'd like to experience as I;'d love a var with a great surround system. Maybe they have one on show in the UK somewhere.