Here is a list of the 44 big TV dramas which we can expect in 2020:
Julian Fellowes (Downton Abbey) seems to be involved in far too many of them -- spinoffs from the plush series which he wrote in order to satisfy the global obsession with British upper-class nostalgia. Actually, he has the ideas and lends his name to things nowadays, and the bulk of the research and writing is done by his writing teams.......
Anyway, there are many good things to look forward to -- but nothing, as far as I can see, from Wales.
Highlights -- a remake of "All Creatures Great and Small", "Around the World in 80 Days", "Father Brown", "Leonardo" (featuring Aidan Turner, looking as if he has just walked off a Poldark set), "The Luminaries" (set in New Zealand), "The North Water", and season 4 of "Victoria." I'm looking forward to a second season of "World on Fire."