In message , Roland Perry
writes
The substation also powers hundreds of legally unmetered supplies such
as street lights and traffic crossings.

You still might be able to spot serious greedy [unmetered] sinks of
power like the said cannabis farm. I think they prefer using infa-red
cameras in helicopters though.

Brocket estate had a C&E raid on a heated farm building let for costume
storage:-)

--
Tim Lamb