I had some guys from enable offer to install fibre for free as long as I used it. Sure I said, I had FibreX ie: cable, already but don't want to be tied to Vodafone in the future.
So they did the work, installed it underground, put some boxes on the wall and made a nice job of it. A few weeks later a lady rang up asking if I was happy with the service and did I have it up and running? I said I was happy with it.
So I have ended up with a fibre connection up to a box to plug the router in, and my Cable connection which I use.
Nicely future proofed.