I worked in the gas industry and I used to see the magazine, that went, with what was then, the CORGI scheme.
The contents of this magazine was almost entirely made up of photos and reports of the incredibly dangerous adaptations people had made to their gas supply systems or equipment. Few were done with evil intent. Someone wanted to build a sun lounge that would cover the balanced flu so they partly covered it up and put a flu in that ran sideways along the wall to vent through the sun-lounge wall= - and filled the sun-lounge with carbon monoxide - . No one died but...........
Welbeck I have very carefully not said that fiddling with the gas supply was the cause of either of these incidents. But this is a cause of domestic gas explosions and in these inflationary times, , where people are struggling to pay bills, for some, trying to bypass the meter, or fit their own gas appliances, may seem away of dealing with the issue.
Fiddling with the electricity supply is by far the most common problem. When I googled it, I was amazed how much of this goes on, but a lot of it is criminal.