O.K., the full story.....
This is the local one-man builder outfit. The house in question is only about 100 yards from me, so I've seen the new building going up over the last few months. He asked me to "pop along" and have a look at this as he didn't know what to do next.
That old meter board was
simply moved live to its present location as the old pre-fab was demolished, hence the service drop just hanging loose from the pole. It's not attached to the wooden fence (with rising or "falling" damp!) but seems to be just wedged between two posts on each side, with the consumer unit (white distribution panel at the bottom) holding it up on the bricks. Bearing in mind that the old pre-fab had been demolished and the new extended foundations laid last winter, I assume that this "temporary" service has been like this since at least the beginning of the year.
He's built one of our standard new recessed meter cabinets into the front side wall (just off to the side of the ladder), and run two PVC pipes up inside the cavity to the attic space. He wanted to know what to do next about getting the meter and switchgear into the new cabinet.
And yes, the white box just about hanging under the stretchy cord in the first pic is the telephone master jack/network interface from inside the old building.