Red Bricks finish - A small area of bricks has been rounded. The finish on bricks depends on the width of the mortar joint so every house varies.
When you step back the holes are barely visible.
Dry dash finish - Here the small dash pebble that fall off are placed back into the wall with the fresh mortar so the holes are nearly invisible.
When you step back you would realise that the house has been drilled at all.
Stone faced cavity wall - the mortar joints are usually wide enough to avoid any damage to the stone.
Again when you step back the holes are not visible at all.