AFAIK FTTPoD isn't available on lines that far from the cab. You have to be able to order FTTC.
It's regarded as an additional service not an instead of. The last official response I got on EO and long line FTTC was that OR were looking for solutions.
FTTP via BDUK might be an option. But I'm not sure on that.
BT Internet 21CN ADSL 1.4Mbps/400Kbps
BT Infinity FTTP 166Mbps/20Mbps soon