Wednesday 29 May 2013 19.01 EDT. The war in Afghanistan has cost Britain at least Â£37bn and the figure will rise to a sum equivalent to more than Â£2,000 for every taxpaying household, according to a devastating critique of the UK's role in the conflict. Since 2006, on a conservative estimate, it has cost Â£15m a day to maintain Britain's military presence in Helmand province.
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