Re: "Openreach offers capped fibre line rental to wholesalers ..."
City Fibre seem to be moling cables in given they have been cabling up Dundee lately and driving through various streets with hardpaved gardens I noticed plenty of fresh trenches in the pavement to run a duct, but no disturbed garden paving or concrete, no wonder, the duct from street to house is of a smaller diamter than a mains gas pipe at most 25mm in diameter and possibly smaller.
https://youtu.be/glpsaCSvZsI - cable mole, basically just a hydraulic ram and only needs a small pit dug close to the house