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Universal Credit: Iain Duncan Smith and welfare changes

10 March 2014 Last updated at 11:22 GMT

The work and pensions secretary has started the biggest overhaul of the UK's welfare state since it was brought in.

Iain Duncan Smith is on a moral mission to reverse the previous welfare system that he believed did not create enough incentive for people to work.

In a Sunday Politics film, Adam Fleming examines whether the changes are working, and how they are being judged by supporters and critics.

Watch the full Sunday Politics interview: Andrew Neil with Iain Duncan Smith

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