@witchunt are Openreach happy to run new fibre installs along different routes from that of the original copper?
On face value for this project it seems like it would make more sense to bring the fibre along a much more direct route down Tortworth Road but the original copper runs a much longer route along the B4058.
Please don't take this personally but Openreach are unlikely to take advice from the general public as to the route their cables will take apart from that final drop between CBT and customer.
They'll be aware of what they have in the ground and where their poles are, and will survey to find the appropriate route. It won't religiously follow the copper.
Building better networks, not just faster ones.