Just had a quick glance at this - the only PON's built thus far off your Exchange are 'new sites' or 'retro new-sites'.
The duct and joint-boxes around that particular area you mention, are for the most part just on one side of the pavements. There's a few that do have more on the other side, such as Nortenham, Haylea and the bottom end of Cornfields.
As for the markings, I'm none the wiser. I mentioned PIA on my first reply to you on this thread and I'm guessing this is what it may be - easy, quick wins for any communications provider. Is there no way of checking with your local Council to get a definite answer ??
Thank you for all the additional information.
This morning's walk has taken a rather odd route as I've covered the locations of the 7 cabs that were installed by BDUK/Fastershire in Spring 2014 to cover the parts of the village that had no Virgin media coverage (which was, at that time installed by Telewest in the late 80s or very early 90s at a guess). Some of the large developments in the village in the last few years had Virgin media put in by the developer at time of construction and another large development has had BT FTTP installed (now verified with an address check) when they were built.
In the many streets around these 7 cabs that I have checked there are green sequential numbers on top of the BT covers in the street. The 5 cabs on one side of the A435 start from 100 and those on the other side start from 200.
I can find no evidence of any numbers anywhere else from the random selection that I have made.
So, from all of this so far possibles might be:
1) Virgin media looking to expand their footprint - there's nothing about this on their 'coming soon' listings on their website though
2) A 'quick win' from another provider (Gigaclear have done some work in the smaller hamlets about 5 miles away and IIRC they took over the local BDUK from Openreach - there is nothing on Gigaclear's website or the Fastershire website or social media feed for additional developments in the postcodes covered by the 7 cabs)
3) Openreach FTTP - looking unlikely if Black Sheep can't see any evidence for it - but it might be the easiest place for them to start as they have Fibre in place to these 7 cabs. The exchange was listed on the May 2021 pdf as an area that was in the rollout plan and this could be very preliminary work
I think I've missed the opportunity to see the 'lifters/painters' in action as I think I caught the tail end of the work at the end of last week as all the painted covers round by me are at the end of the numbering sequence that I've seen (i.e. in the 230s). There's nothing I can see around the location of any of the cabs for work about to commence on one.network and the planning applications that I saw up today where for the usual tree chopping and conservatory erection.
If anything else turns up I'll update the thread as other people might find this useful in the future.
** edit ** - I've just remembered that there are a couple of cul de sacs not far from here that have all of the Telewest/Virgin street furniture that was put in when the houses were build in 1997 (cabinets and pavement chambers marked CATV) where there isn't actually any cable infrastructure installed (I found this out when we were looking to buy a house on one of the streets) - I'll check tomorrow to see if there are any green numbers on the BT covers there as they are served from the FTTC cabinet that is pictured in an earlier post - that might help to narrow down/promote some of the potential items above