If you really can see it outside your window across the road on the footpath, then it will be within 100metres line distance, so yes you will get near enough the full 40mb. If you are about 300metres or less, then I'd expect the full 40mb, most people online have got 34mb+ at all the distances i've seen.
That is assuming that I am actually connected to THAT particular green cabinet, as opposed to a different one around here (I know of at least 8 others (2 large ones at the entrance to the housing area, then the usual small ones dotted around the housing area)
Plus then there is the cabinet in the housing area behind my house, meaning that I don't even know if my house is wired via the cabinet here, or the one there...
AFAIK BT are not exactly known for wiring the houses in the most "optimised" way back when the cables were laid.
You sure they are not using "Cornwall and the Isles of Scilly" as a proxy for Cornwall
In a previous business life we used to refer always to Cornwall and the Isles of Scilly rather than just Cornwall, but never actually visited the Isles nor did anything specific for them
I suspect that the Isles will be part of the 10%
I'm on cheapo O2 as well, but I can only get 5.5mb due to distance from exchange (and the retarded path the wiring takes since it's not as the bird flies)
We have 2MB broadband at the moment,
BT are just too slow at this broadband game.
I live near Greater Manchester and I still can't get fibre optic!
I can get around 6.8mb in a small village, which is ok for a village, but I doubt it will ever get anything faster.