A claim was made by a BBC News reported in a TV broadcast on the BBC News channel. I would consider that notable, but the broadcast is not available on BBC iPlayer, and not repeated in their web reporting on the same topic. How can I retrieve the exact wording?
Historically, our answer to questions like this has been "Find another source".
If you can't find anyone else quoting the same (or a similar) claim, then it likely isn't widely believed, and perhaps wasn't notable in the first place.