BBC FOUR are celebrating NYE by showing all of season 3 again in full tonight from 10pm. All 6 episodes back to back.
https://www.bbc.co.uk/iplayer/schedules/bbcfour
The last couple of episodes/scenes where he visits her mums, how they dealt withBecky's pregnancy, and that last trip detecting together shows really well i thought thought their attraction for each other. And they are both fine actors.