Labour PPC backstory: I grew up in a working-class area of Manchester.
Tory PPC backstory: My grandfather, the Dean of Rochester ...
Green PPC backstory: as a young man I once saw a ghost.
BeijingPalmer
My Labour PPC backstory: I grew up in a single parent family on a council estate in East London
My Tory PPC backstory: my grandparents were small businessmen
My Reform PPC backstory: my grandparents came to this country legally
My Restore PPC backstory: I am descended from white Rhodesians
Stephen Bush
It's quite a fun exercise to try to work out what the most working class and most middle class version of the story of your own social background you could tell. (I could tell wildly different stories about my own social class by picking the biographies of two grandparents - one from each parent.)