Hi garypjackson,
Thanks for coming back to us on this one.
As there doesn't seem to be an issue with other programmes, it sounds as though this is the programme itself as opposed to channel specific. Especially as it's happening on the Catch up content for the programme as well as the live channel version.
Can you keep an eye and let us know if you notice this happening on any other channel/programme?
Let us know.
Thanks,