The BDUK money is meant to fund areas that are otherwise "uneconomic". Assuming you're referring to the three cabinets not on Openreach's list (?), these seem to fit squarely into the BDUK category so should be included in the county council's broadband plan.
So I suggest you push the county on this, get your MP to do so too. If they wont include the area then get them to explain why not, after all they work for you, not the other way round.
All opinions expressed by me are my own
(excluding 2Mbps for BT Vision)