About 10 years ago I used to work for a company that had a contract with some high Street stores and under the tills in these stores used to have some really easy to use cable management.
I'm trying to find the exact same stuff. Tried screwfix, tookstation and even a Google image search to find the one I'm after, with no joy.
It's not the usual plastic tubing where the lid snaps on. It has no removable lid. I can only describe it as a rib cage style design where you push the cables into it and it grabs it.