I don't see a massive problem here, I have to say.
I had this debate with my rather right wing mother in law the other night.
Basically, I cannot see why a 'socialist', or a person espousing revolutionary ideas and ideals, has to live as a troll underneath a canal bridge, in order for their views to be worthy or genuine. Anthony Wedgewood Benn was born into a position/life of relative prosperity and privilege, and his left wing views hardened as he got older and had more experience of the capitalist and govenmental machine. I really don't understand why someone must be poor or live in squalor to hold ant-establishment views.
But to live a life that benefits from things you deride in public seems peculiar to me.
In what way?
He's no longer with Khan, and lives in an east london apartment. It isn't exactly Buckingham Palace.
So he didn’t benefit in any way from a house purchased in an elaborate scheme to avoid pay inheritance tax, set up by that great man of the people Jimmy Goldsmith? Its all rather ironic. As is having your book published by Random House/Penguin.