Have been binge watching (and loving) Hinterland which was filmed in Wales. Could have cried when I came to the end of Series 3 to discover that Series 4 had been postponed during lockdown. Not sure when (if ever) it will be filmed. Series 3 left on a real cliffhanger too!
I think the bleak North Wales landscape lends itself to that "scandi-noir" feel. Apparently they record two versions, one in Welsh, broadcast on S4C, and in English on BBC.