Episode 4 [re-watch]

[Tea Lady]

I thought this was one of the few episodes that you got under the skin of Ros. You saw her on the phone to her mother and lose it with Harry at the end. She was emotionally weak at this stage I feel. HN acting was brilliant throughout.

I agree Simone about the tradecraft. It was very clever but not overly complicated like you get in a James Bond movie.