Recently I've noticed that the original programming output from AMC seems to feature what I consider to be a disproportionate amount of British talent - a distinction that is amplified by the fact that these British actors are invariably playing American characters.
The Walking Dead brought it to my attention by casting Andrew Lincoln and David Morrissey as the show's key protagonist/antagonist during one season, but this was nothing particularly unusual at that point.
Preacher, however, is another slice of southern gothic set in the American south; but this show features an entirely British principal ensemble; Jessie, Tulip, Cassidy, Emily, Fiore and Deblanc (although, granted, the latter of these two don't play American characters.
AMC also co-produced the British hit series The Night Manager and Humans, the latter of which acquired William Hurt in their casting, perhaps in some kind of exchange.
So, to get to the point:
Is there some kind of overt exchange going on between specifically AMC and British talent?
This doesn't necessarily have to be an explicit formal agreement - for example, AMC may have appointed someone high up in their acquisitions or production department with a lot of experience in the British market.
Or is this all simply coincidence?