That shouldn’t be an issue. Many outdoor floodlights have a switched live single pvc/pvc from the switch and neutral/earth pvc/pvc from the closest light on the same circuit, which is perfectly acceptable.Yes but you wouldn't be running a permanent live from a switch and seperate cable for a neutral from a light point to feed additional lights and other points.
They are obviously looking for a place where they can pick up a L and N connection.