Yes you can pay for FTTPoD , Fibre on demand but you will pay a lot for it, at least £8000 to install but probably a lot more and monthly charges of around £300, still interested? Probably not.
To be fair, the monthly price is typically more like £90+VAT for 300/30 service, and that's only for the first 12 months. After that you can switch to any regular FTTP service at standard pricing.
However the two kickers are:
(1) Huge install costs. See
this spreadsheet of reported costs from forum users, and notice how everything is at least £8K+VAT in the last couple of years. You'll have to pay £250+VAT just to know how much it will cost, and pay the remainder of the installation charge in full, up-front, within 30 days of receiving the quote. Gigabit vouchers to offset the cost are no longer available in many areas they were previously.
(2) Long lead times with no guarantees. 6-12 months are typical, but mine took just under 18 months in total (survey ordered Mar 2018, went live Sep 2019). Even getting the survey done can take 2-4 months.
With Openreach aiming to reach 80% of the UK population with FTTP by Dec 2026 anyway, this means there is a big risk of paying a lot to get not very much.
If you're still interested, Cerberus is the main nationwide reseller of FTTPoD:
https://www.cerberusnetworks.co.uk/connectivity-broa...
The other option which I think makes more sense is to get a group of locals together for a Community Fibre Partnership. This avoids the £250+VAT survey fee, and Openreach in theory contributes more towards the cost. However it can also be very slow. Our street started a CFP at the end of January, hoping to piggy-back off the fibre infrastructure which was put in for my FTTPoD; but Openreach only got around to doing the survey a couple of days ago.