Mr.Charrington

Mr Charrington is my favourite character in this novel. From the beginning we see him as a deep and nostalgic man, and this view is broadened by his periodic recollectionof old nursery rhymes. Over time this poem is started by Charrington, lengthened by Julia, expanded upon by Charrington, continued by O'Brien:
Oranges and Lemons says the bell of St. Clements
You owe me three farthings says the bells of St.Martins
When will you pay me says the bells of old Bailey
When I grow rich says the bells of Shoreditch
This is where you believe the rhyme ends, until Winston and Julia are arrested and Mr Charrington, who shows himself to be not an old man but a middle-aged member of the thought police,completes the rhyme with:
Here comes the candle to light you to bed
here comes the chopper to chop off your head

This results in one of the better scenes in the novel, and leads to the third part, Winston's capture.

Possibly the reason I like this character so much, in the words of a university student on shmoop.com:
"He illustrates the ‘"just when you thought you were safe" mantra we seem to have adopted since beginning 1984. He emphasizes the themes of betrayal, deception, and all around brutality that are woven through the text".