It's back to more serious matters in this episode of Never Mind The Bar Charts after last time's board game review - the role of money in British politics. I was delighted to have on the show Professor Justin Fisher, one of the country's leading experts on the topic and someone whose research into grassroots politics makes him a better informed expert than many on what really goes inside political parties.

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• Jeremy Thorpe's role in unlocking the beast of national political spending.

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