Just as an aside to point out something else the DNO's are having to deal with, we were out on a job in a semi rural Village a few weeks ago. Next to our site, was a another site, concealed from the road behind large wooden gates, looked like they were building hardstanding plots to site Caravans. There was some activity, going on, we could hear voices, and see some activity through the fence between our site and theirs but they were working behind several parked vehicles so we didn't take a lot of notice.
The power to the site then went off, and because our site is critical infrastructure, we have to report and log any power failures as soon as the appropriate person becomes aware, just so happened on this occasion it was rather quicker than normal as we were already on site. Others from neighbouring properties were also coming out to ask the Neighbours if their power was off, it aspired it was near enough, if not all, the Village.
About 10 minutes later a Guy from the DNO arrived, he said the timing was pure chance as he was on the nearby A1 when the call came in, and was literally 5 minutes away from the site. We then put 2 and 2 together and realised all the activity next door was happening at the foot of a Pole where the Electricity Transformer was mounted....
The DNO Guy knew exactly what he was looking for, it couldn't be seen from the road because of the tall gates, and they'd blocked any view from our site with their vehicles, but it aspired the Guys next door had pulled the Fuses on the LV side of the Transformer in order to make an illegal connection to the supply, made their connection, then he'd caught them in the act of replacing the fuses!
He said it is getting very common, these people know exactly what they are doing, have the correct kit to do it, (either stolen or bought to do the job), and the connections, apart from being illegal, can also be substandard and dangerous. This was the first time though he'd actually caught them in the act.
His next task was to wait for the Police, as the Electricity People would need access to the site to remove what had been done and make sure the DNO apparatus was safe and in proper working order.