The 'good chaps' theory refers to the informal understanding governing what's considered acceptable behaviour from out elected politicians.
But what happens when the politicians we elect aren't good chaps?
From lobbying to lying in the Commons, the last fourteen years have seen a a degradation in the public's trust in MPs.
Oli speaks to author and Financial Times journalist Simon Kuper about his new book Good Chaps: How Corrupt Politicians Broke Our Law and Institutions and What We Can Do About It.
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