A few weeks ago a BT engineer was working on installing more lines to the brand new houses in Kingsbrook Park. I Asked him about BT Infinity Installation in Kingsbrook Park, which he had no solid information on. I then asked him this same question about BT Infinity's checker stating that number 4 was receiving Infinity in June and he said he was unsure of that. As he then said that number 4 was definitely connected to the same cabinet as I was and that it would be very unlikely that only 1 house in such a dense development would receive FTTC.
I suppose he could be wrong, but that is all I have to go on.
Also No 4 is part of a terrace housing and I think it would be odd if only a single house in a terrace was on a completely separate cabinet.