How does Mr. Charrington’s appearance in the upper room at the end of Book 2 of 1984 affect Winston?

Up to this point in the novel, Mr. Charrington has seemed gracious, warm-hearted, and helpful. His cockney accent and unassuming nature signal he is a typical prole. At the end of Book 2, Winston sees a very different Mr. Charrington. He takes charge, his body has straightened, he looks much younger, and his cockney accent has disappeared. In Mr. Charrington, Winston sees the alert cold face of the Thought Police staring at him. With the exception of his feelings for Julia and about the woman singing in the yard below the room, any faith he’d had that among the weariness of life there was some goodness has now evaporated.