Same situation here in North East Wales
Virgin were using Actavo for ductwork around Wrexham, but the roll out was put on hold until areas previously covered were reinstated correctly. A lot of the defects have been incorrect depth of ducting, and insufficient distance between other utilities.
The re-work and future expansion in the area now seems to be underway again, but with Litespeed as the main ductwork contractor.
From what I can see, the latest contractor is doing a better job than the previous, despite being a smaller operation.
Was thinking of switching ISP to Virgin FTTH when it passes me. They can't be that bad, can they?