I would be grateful if someone could give this a sanity check...
We live in a bungalow, and the electricity meter and consumer unit are currently located side-by-side in an internal cupboard. The DNO (Western Power) service cable to the house runs from an overhead line to the gable end of the bungalow and then around the external walls and into the back of this meter/CU cupboard.
However, we're planning an extension which will require the service cable to be relocated because part of the wall it runs along is to be demolished. A team from the DNO has visited to discuss the matter.
We had hoped they might be able to simply reroute their service cable through the loft space to the existing meter location, but this isn't permitted. However, they explained that the meter tails are our responsibility and hence could be run through the loft. Hence their proposed solution is to fit an external meter box to the gable end wall of the house, relocate the meter into that, and run the meter tails through the loft space to the CU. The distance from meter to CU would then be about 15m.
This arrangement was proposed by the DNO so I assume it's OK, but I have read (including in the DNO's own guidance literature) that meter tails should be no more than 2-3m long. Ours would be at least 15m long! So does their proposed solution sound reasonable? Are there any potential issues I ought to be aware of?