TBH It looks like you are going to be stuck with a BTw based supplier from the Temple Sowerby exchange. The Lakes isnt the best area for wif-fi, so I think your choices are going to be pretty restricted.
I think the foregone conclusion is that you are going to be on the end of a long line.. and therefore, personally if I were you I would be looking to go with an ISP that has a good reputation for being able to communicate with the customer and liase with BTw if anything does go wrong. IMHO you should be looking at the likes of Zen.. or even Plusnet.
Something to note.. Ive since zoomed in a map of the area. Now I could be wrong... but my gut instinct says that any BTo cabling isnt going to go straight down the A66, but may actually take the back road (Priest Lane), if it does you may get a slightly better result than the doctors, depending on where it is you choose to move to.