This may be a question akin to asking "how long is a peice of string" but it can't do any harm to ask...
I live in a low-rise council block on a small council estate in central London. Though the estate is peppered with BT pits, there are no cabinets, and an online search shows that though the immediate area is FTTC enabled, the estate is EO, so no FTTC available.
There are ~200 properties, but since we are not rural no BDUK funding, and the London GLA funding seems very targeted (elsewhere)
I know Openreach's standard solution is network rearanegent, which presumablt involves intriducing a new cabinet near the flats, intercepting the copper going to the exchange.
Were this ever to happen, what kind of funding would likely be required? Thousands? Tens of thousands...?