Enjoyed it but for my money the weakest season yet. Everything that was innovative and stand out from the first season, the anachronistic soundtrack , the slow walking montages etc just feels pretty formulaic now.
The Season 3 cliffhanger was just kind of dispensed with. Why were they all nicked in the first place, let alone sentenced to death. Tommy wangling presumably royal pardons for them all implies that he's already operating at a level way beyond Changretta's little gang.
The dodgiest element has to be the treatment of the General Strike and particularly Jessie Eden. This is an obvious danger when mixing historical fact and fiction but I didn't like the way that this real woman was turned from a communist firebrand (who stood for election for the CP herself) into a simpering adjunct for Tommy's ambition and a grass to boot.