Anyway the real reason I am asking here is that in the garage next door to me there is, to my eye at least, what appears to be a suitable connection point (see dropbox link for image of this). It is currently supplying one flat next to the garage where the supply is housed. I think it should be possible to take another supply from this and feed it through the wall behind (This would be convenient as that wall is the party wall with my garage). So before I get back to SSE to point this out and push for them to quote on connecting here I was just wondering if others agree?
For those with limited vision or no access to the image:
Image shows a largeish (~1") cloth wrapped cable rising from the concrete garage floor into a large, roughly 30cm x 30cm, black plastic connection block mounted on a board, on the top of this to the right there is the standard black cable connection to the meter (for the flat) and what looks like extra holes in the middle and left, for possible further connections?
 As an aside I know I can get others to do some (most) of this work instead but won't they be working from the same maps and so come to the same conclusion and quote for the same?.