[Spoilers] Beth Bailey/Sophia Myles

[loladom]

Well be prepared as

Series 10 Spoiler: show

There are lots of new characters coming in S10 too, including a new section chief.

I'd take a guess that Sophia probably thought they didn't utilise her strengths (which is true) Maybe she thought the role would be bigger than it turned out to be and she's working on moving onto something else. Perhaps Kudos were disappointed with the overall portrayal of Beth as she was neither loved nor hated. The thing with Spooks is that the characters are often established via subtle means as the action/plot unfolds rather than by direct writing and the actors who have garnered a following have done so from their own efforts as much as from the writing. Malcolm is a classic example. And Harry of course. I'm sure I read it was a mutual thing, her not signing for another series. I hope she finds something more out there as I do like her in other things.