The companies which
might offer FTTP ('fibre to the premises'), depending upon where you live, include Hyperoptic, Gigaclear, Pure Fibre, TalkTalk Ultra Fibre, Zen, IDNet, Cerberus, Spectrum and KCOM.
Start here:
https://www.thinkbroadband.com/packages/fibre-broadband
Enter your postcode for an intial search. Then use the advanced filters to select 'FTTP'. (In practice though it's hardly necessary, as the fastest speeds are listed first anyway). Remember that you'll probably need to be in a major city to be offered FTTP at all. In many parts of the country FTTC is the best that's on offer.