Useful website showing free catch-up & streaming channels.
I’ve started watching Extant on Amazon’s Freeview equivalent: FreeVee. It’s pretty good, only contains one ad that’s only a few seconds long and that’s for FreeVee!
https://www.justwatch.com/uk/new?genres=fnt,hrr,scf&exclude_genres=war&providers=aim,al4,bbc,itv,myf