In reply to a post by Taras:

In reply to a post by Ancient_Mariner:

Blue is usually Water.

Electricity Red.

Gas Yellow

However, the marking up colour can also be a warning that a particular utility is beneath - a sort of don't dig here...

Cheers!

Thanks for clearing that up, before our village got fttp, there was lots of blue markings near poles and trees, i though (obviously incorrectly) they had something to do with OR

Before OR installed fibre round here all the affected chamber lids were numbered using blue paint. (Because City Fibre's contractors had already been round and cleared the blockages a couple of years ago in this case there was no need for OR to install any new ducts.)

You're almost right. What appears to be yellow paint is actually a magic transparent road repair. See a whopping great pothole, spray a magic yellow circle around it, and hey presto! the road's as good as new again. Myself, I'm working on a similar magic spray to fix my car's suspension.

I found some photos from 2021 (last time G.network chopped up the roads and footpaths) and indeed they also used blue paint to mark out their new chamber locations.