It's called FTTPoD (Fibre To The Premises on Demand).
Very few ISPs support it, and BT Wholesale stopped offering it a while ago IIRC. They may have started again.
It is horrendously expensive. Openreach charge BT Wholesale, who then add a profit margin and then charge ISPs. (LLU suppliers deal direct with Openreach but I'm not aware of any touching it).
It is supplied from aggregation points. Those are glorified underground junction boxes for the fibres. FTTC cabinets are usually near one and fed from it. Users may, strangely, be nearer to a different one and FTTPoD might be supplied from that.
The Openreach installation charge starts at £950 if you are under 200 metres from an aggregation point. Rising by £400 per 200 metres up to 1km. Then faster for longer distances. Furthermore, these are minimum prices, depending on survey. If there are difficulties requiring considerable extra work it can be more, or even rejected as being non-viable.
Annual rental on the only product available - 330/30Mbps - is £1,188.
Given that BTW and the ISP both add a profit margin and the cost of providing the backhaul and other ISP services, and you pay the ISP price plus 20% Vat, does that answer the question?
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Edited by RobertoS (Mon 27-Jun-16 15:05:49)