Dear me, seems some confusion going on.
BT's checker seems to be a standard checker based on line length from the exchange, not a special FTTC checker.
You will not have fibre to the premesis in this. It'll be VHDSL from the cab to the premesis over copper. Cisco et al will have to produce (if they don't already) suitable WICs for this.
It is only available in the areas there they have installed fibre to the cab, which is not everywhere. And finally, they are required by regulations to open up the wholesale access to competing networks.