[spoilers] Harry and Ruth Strike Back

[Nia M]

Interesting idea there Tea Lady, and that might well explain his slight familiarity with her from early on (bit of flirting on first meeting, Harry? )

That does then make her betrayal of the team to Amanda and GCHQ all the more disappointing for Harry (even if kind of justified by her turning, and her hesitance in doing it anyway). I'd say though that if they'd worked together prior to her joining MI-5, couldn't she have just Harry for a transfer there, rather than resorting to agreeing to spy on the team in exchange for the secondment. I suppose it depends how involved she was in the Baghdad thing, and how well she got to know Harry, but if he trusted her enough that she was the only one other than him to know about it (aside from the American) then they must have known each other pretty well at that point.

All in all, I think it would have been after she joined (properly, not on secondment) Section D though.