I mounted a “cigar lighter” type socket inside the glovebox. It has its own inline fuse. I then put a dual USB adapter in the socket as that is my most common use, however I can still use any other similar accessory as needed. The reason I mounted it in the glovebox is I use the open glovebox door as a shelf to hold my phone (I have a suction cup style holder the sticks very well to the inside of the lacquered door). With the glovebox closed, everything is neatly tucked away.
But on to the more important question………the speed limit in Wales is 20 mph?!?! Hell, here in New Jersey you’d get