hey dont see any problem with your idea Paul, i have a farmer customer with a similar arrangment, the meter is over 200 yards away from his barn,,

He wants a new supply, 400amp 3phase, they want, wait for it...£37000.00.. cause they have to put some new poles in and extend the HV cables, to a small sub.

You used to be able to pay this off via your electric bill, can you still do this.. also when i lived up north MANWEB had to install a sub station on my old bosses land because he need an uprated supply, they did this very cheap because it improved there network, could you try that one Paul..