BEagle
Good point. I first took an interest in this when I was the controller at Benbecula, which had a single TWR/APP frequency. Traffic from the German bases would call for the weather as far south as Newcastle; the same freq was used by Heathrow App. Another relevant factor is the practice of aircraft calling for weather on the TWR freq when still a long way out, and well outside the TWR Freq DOC. A notable case was a few years ago .....since resolved.......aircraft inbound to Hahn.