Possible Clues:

• It's enough to turn your stomach so to get you a half-century
• Common like Dickens's friend?
• Like a sort of friend -- that's what the traditional building society is!
• Financial institution with millions ends with you upset, you needing a pound
• Reciprocal; common
• Like a friend of Charles Dickens?
• Shared, as a friend
• 'The feeling's ___'
• Given and received from building society perhaps
• Common to both