This cannot be done now, because we have VDSL. The maths don't work any more. The area cannot be made attractive to any private investor to any degree. Upper Froyle has nothing at all (sub 2 Meg ADSL) but taken alone, it has too few premises to make it worth bothering with.
Sadly, I suspect that VDSL is here to last a couple of decades at least.
The Openreach guys have been out to the pole outside with a cherry picker twice now. "I've changed the dropwire and it's still not fast enough for...(deleted last part)", "Is it knackered" and "it's the loop that's the problem" were words that drifted through the window since the pole is directly outside. (Not our connection)
Er, yes, I might have suggested that the circa 1.8km (D side) of knackered old copper or aluminium is to blame for poor broadband speeds and you could probably have got to that without spending something like five 'man' days on it

which would have been more usefully spent stringing fibre between the poles to get it somewhere near the centre of the village. As in: near most of the properties.
I do have some quite detailed planning for how a FTTP network would be routed in the village. Wayleaves are unlikely to be an issue. The cost is respectable for rural since the area is largely just two roads with the houses at the sides. Backhaul is the biggest issue which in turn means that providers want to see larger areas to cover to make it worthwhile and the VDSL rollout has killed it. It is not now possible, for instance, to reach the lane we live in with superfast speeds, nor Upper Froyle, nor the houses in Bentley nearest the A31 a long way from the cab, and so on.
But with 4G speeds of 50 up and down which may well see improvements, and VDSL speeds of - I'd guess - between about 10 and 76 down - Lower Froyle is actually fairly well served for superfast speeds now, years ago with only 3G here we struggled hence my getting involved, but now we have a super quick connection that just works so it doesn't impact us so much.
As it turned out while the majority of the village thought that current speeds were inadequate, absolutely nobody, not one single person, actually volunteered to help with a broadband project. And many will be very happy with their VDSL speeds. If you've never had 4G or cable then even seeing the dizzying highs of 15 Meg down seems remarkable and correspondingly the desire to have 1000MB or better takes a nose dive.
What will be interesting is to see what happens in Upper Froyle and the effect on property sales in the new development given that it doesn't have access to fixed line broadband (sub 2 Meg) nor is it on the LA's deployment map. VDSL would almost certainly include the plot. So I wonder what Upper Froyle may get, if anything.