I just had a BT line installed today (for the Zen FTTC product that I have ordered). I was given an 8am to 1pm slot. The engineer arrived at 12:30pm and left about half an hour ago (3pm). Apart from the fact he went past the alloted time, I'm pretty happy. I told him exactly where I wanted the copper cable to be attached to my house, and exactly where I wanted the socket and he did exactly what I requested.
For some reason I had to get a separate appointment to do the FTTC part so I'm crossing my fingers that will go just as smoothly.