Series 9 Episode 7 discussion

[BravoNine]

I'm confused on one thing, how is it that it took Beth so quick to find the picture of the real Lucas North when no one else did after the Dakar bombing happened? Did they just not focus on Lucas North then? But I'm sure if he had to go through MI5 processing, you would think someone somewhere would have discovered the picture of the real Lucas North! Surely security couldn't be that bad!! Even when I was enlisting for the military they had to check my picture and backgrounds more than once!!

And it seems that someone has warned Beth about Harry's tendency to shoot/kill traitors, why else would the poor thing be so worried about what Harry's gonna do with Lucas?