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The UK will formally leave the EU next year. But much of the current negotiation is about a 'transition' or 'implementation' phase which could last years. Chris Morris discovers what will actually change on 'Brexit Day' 2019, and why so much is still to be decided.

Producer: Chris Bowlby Editor: Hugh Levinson.

Fler avsnitt från "Brexit: A Guide for the Perplexed"