Its also absurd companies offering "unlimited" mobile traffic do deep packet inspection. Whenever I try to SSH to any of my servers I get banned immediately, despite having a ridiculously low data rate.
Indeed, ToS requests that you don't use the data connection for something like VoIP or other type of communication, in practice they don't care.
I have in Germany's Vodafone 3GBs that I can spend over LTE, and boy, they are spent religiosly until the last KB. Half free communications to outside Germany, half is streaming music/videos.
One day Virgin will route a cable our way, and life will be good. Until then we're stuck with BT and their 200 year old copper (and a few cell towers without enough power to drill through the stone buildings in town, let alone the little hills around it).
Actually you're right on the edge of the coverage area, why not contact them and see what it would take to extend it.
Or there's always satellite...?