Thanks for the clarification.

In reply to a post by Zarjaz:

OK, they are just someone having the existing Openreach line plant marked out so as not to horse through them when they are digging up the pavement for some other reason.

They might be upgrading the chambers to the newer square one, we had similar markings when they upgraded one down our road a few years back.

Paul

Unlike around here ...

Having 66 kV power laid at 750mm down. They marked where they though the green fibre duct was, started to dig down, carefully, and yes they were right, but did not expect to find it less than 50mm beloiw the surface!