>>> Chris - there are about maybe 13 cul-de-sacs - so for instance is there are no virgin users in my cul-de-sac - do they need to lay cables for the other 12
Their licence to operate (which the Government have sold to them for a vast amount of money) actually requires them to ensure that the service is made available to all homes, so they MUST lay cables in your street even if every house is owned by a religious sect which prohibits its members from watching TV or using the internet (because the service must be ready-and-waiting for someone different who might move in at a later date).