On the VM instructions for builders linked to, on the page 12 referred to the duct from below ground is seen as ending under a CATV cover, and the brown wall box just above it.
Not only that, but a distance of 350mm from the Openreach external box is prescribed. Not followed in either of the OP's links.
Given the small amount of ground area we see, it looks a bit to me as though they have moved in before that part of the finishing off of the installation and ground covering has been completed.
My broadband basic info/help site - www.robertos.me.uk.
Domains, sites and mail hosting - Tsohost
Connection - Three B311 4G, tbb tests normally 35-45Mpbs down, 65Mbps off-peak, 9-24 up. 1+ 8 Pro max 80Mbps down, 24Mbps up.
To argue with a mindless bigot is foolish.