On my way home from work just now, I counted no less than 5 large Openreach vans outside my cab (SWTB CAB 3). Not sure what's going on but there are huge drums of cable and men working on both the Fibre and PCP cabs.
There are major roadworks going on quite close so maybe it's got something to do with re-arranging cables for that.
Can you tell if they are replacing the PCP with a new shell? The current one has a hole rusted right through it and is south-westerly facing so get the full brunt of the heavy winds and rain we often get!!