Mumsnetters interview Boris Johnson (part 4).

Part 1: http://www.youtube.com/watch?v=j1Ed5pSCwNw
Part 2: http://www.youtube.com/watch?v=agqVvZGTnqA
Part 3: http://www.youtube.com/watch?v=eAIpTAwSLc4
Part 4: http://www.youtube.com/watch?v=a2EJV4Atb6Q

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