Recently gone live with Hey!Broadband (yes, it has an exclamation in the middle and no space) on their "Gigafast" service, which was advertised as 1000 Mbps.

The fibre connection was via overhead line from the telegraph pole on the opposite side of the road, with the full installation taking approx 2.5 hrs. The supplied router is an Adtran 854-v6, which seems well featured and reliable, although it is paired with an existing Orbi setup for coverage throughout the house.

I'm the first to go live with their service in our road so the speeds are currently fast and reliable, and yet to experience any issues.