Just have a blown DNO fuse handy, and blame the outage on the fuse...lol!!
The Seal, ....well that wasn't there when i arrived Me' Lord!!
Now let's be real about all this, with the amount of money these companies have made out of the standing charges over the years, from every single supply/meter they have ever installed, it's about time they uprated their installations by supplying a means of safe isolation at no cost to the customer. Hell, you have paid for that isolator a million times over, ....and then some!! Especially from all those older installations out there.