What is FTTP? How does it differ from FTTH?
(But see also the first paragraph of the article.)
The practical differences are that FTTP is normally fibre provided by openreach. Openreach being the dominant heavily regulated monopoly. They provide the link, and ISPs resell over the top.
FTTH is normally fibre provided by the same company as the ISP, and so has a much smaller area of coverage.
FTTP aka FTTB (Building). The nomenclature's all a bit ridiculous IMO.
It's copper from the telephone pole to your home. It's cheaper to implement and gives you less overprovisioning.