Because the footpath changes from one council to another ON the boundary, and has different references either side of the boundary. The exact admin boundary is the correct point for the footpath to split

corrected, thanks for highlighting this

It's a temporary construction compound that was itself under construction.
After the compound is constructed, it will be used to assist in the construction of nearby rail infrastructure.
After the construction phase of the rail infrastructure is completed, the land used by the construction compound will be returned to its previous use. If you can think of better tagging that is already used in Openstreetmap, please let me know.

I may have jumped the gun a bit. as of yesterday lunchtime, only one of the tracks had been connected. Not sure if they've done both yet.

corrected name and ref, thanks

you are correct. I've corrected name and ref of the STW

You are correct. I have updated name and ref accordingly.

you are correct. I've corrected the name of the STW and the ref

Market Information Publication spreadsheet.

Yes, it's a strange naming for these reports, but the waste water infrastructure companies have to publish the locations from where they might be able to supply farmers with biosolids from.
biosolids is the treated sludge that can be used with care to enrich the soil on farms.

you are correct. I have edited this STW name and ref