We can only get FTTC (Fibre to the cabinet) but changed over in December from Plusnet to Vodafone, £17 a month cheaper plus a £125 rewards card 🙂
My landline is also now digital (VOIP), the existing phone just plugs into the router and works as normal 🙂
Please excuse spelling/typos. Apart from being a clot it turns out I had one on my cerebellum that's now causing various problems!