They have loads of good programmes. The Tunnel is good but you might have missed the first few episodes of the 2nd series. I love Veep which is starting again soon. There is a new series with Damian Lewis which starts the week after next called Billionaire which looks worth watching.
They also have some good one-off documentaries. Sky Atlantic is my favourite channel. I'd happily move to freeview or Virgin if I could keep Sky Atlantic.