This may seem rather a silly question but looking at the 'SWA cable cleats' supplied by Screwfix and others I'm not really sure how they are supposed to be used.
Do you really fix an SWA cable onto a flat surface with these, with a screw through the hole? It makes for an asymmetrical mount with one flat side (where the screw is) and one half round side (round the cable).
They *look* as if they'd be happier with the half round end away from the wall but I can't see how you could fix them that way.