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Osborne speech on currency union

13 February 2014 Last updated at 08:43 GMT

Westminster's main political parties will warn that an independent Scotland would not be able to join a currency union with the rest of the UK.

Chancellor George Osborne will deliver the message in Edinburgh, which will be swiftly endorsed by Labour and the Liberal Democrats.

Mr Osborne will say he wants Scotland to keep its "economic security".

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