Is that maybe supposed to the the Lake Vyrnwy dam? If so, maybe that is part of the Crown Estate? Not sure that a copyright notice is necessary on something like that, though!
Saw an advert for PG Tips tonight which featured the voice of the woman that does the Masterchef voiceovers announcing a dish in the Masterchef way - are there any special rules around her doing stuff like that? I know I've seen ITV presenters do TV adverts and reference their TV work but I don't think I've ever seen it happen with someone from a BBC show.