Interesting stuff, my parents are in the same situation with a green cabinet maybe 2km away in the nearest village but they are on copper wire. Openreach say because the wires are bundled, the more it is used the slower it gets for everyone through electromagnetic effects, also they can’t find how the cables route underground from the exchange to the houses.
Frustratingly there’s a bunch of 24 fibres going all the way up the road past the houses to a 4G mast, with only 4 in use, laid by openreach, the openreach engineers said the others could be used for domestic broadband but there’s basically no chance of getting a request in and seen through, which was refreshingly honest…
4G is strong from the nearby mast which is an interesting option, not sure if it’s an option for iplayer etc at that cost though.