As expected the installation didn't go smoothly. The engineer arrived and said that the cable wasn't ducted. He got a track and locate engineer out who used his detection tool to identify where the cable was in relation to the house/street. He then attempted to lift some of the monoblock but said that it would require a specialist dig team.
I have been advised that will likely be 10 working days away, and once they have been out I will be able to place another appointment.
The engineers said that the other 7 houses in the street will have the same issue but will likely need to place an order to allow the issue to be identified for them. I hope that this is incorrect and that the information for those properties can be updated to allow my neighbours to avoid a similar frustration.
Paul