|UK||Geraldine James, Rose Leslie (Young Milner)|
"I'm Milner. Now, I need you to come round here and fire both barrels of that shotgun into his head."Milner, also known as Letan, is an MI5 agent, the head of the Network, and the true identity of Mr. Rabbit.
Milner's background is hazy, as is the question of which of her names is her "real" one. The Assistant is the only character to call her Letan in conversation; most others default to Milner. Milner was married to a man named Tom, but his surname is never revealed and he never refers to her by name.