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Astra's former boss: 'Proposal based on manipulation'

6 May 2014 Last updated at 17:35 BST

The former chief executive of AstraZeneca has attacked the attempted takeover of the UK pharmaceuticals firm by its US rival Pfizer.

Sir David Barnes was chief executive of AstraZeneca until 2000 and deputy chairman until 2002.

He told The World At One that the proposal was based on "manipulation of tax affairs".

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