The airlines have adopted the practice of writing their name on the underside of their planes. I am not sure if it was Emirates that started it but that was who I first noticed doing it and now others have followed suit. I haven’t seen the type written on the underside of the plane before, though. This bizjet flew over home on approach to Southampton. I can safely say I would have known what it was but apparently the owner wants to make sure no one is in any doubt about what type they are operating.