[lookoutwales]

Indeed prior to 1982 did the Welsh news programmes cover much in that regard or were they basically a translation of the Enhglish language Wales bulletins?

AFAIK, both 'Heddiw' and 'Y Dydd' tended more to cover Welsh national news rather than UK and world news.

And they certainly wouldn't have been just mere translations of 'Wales Today' and / or 'Report Wales' - they did have their own reporting and production teams and both programmes wouldn't have necessarily followed the same running orders every night.