North Sea oil rig
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North Sea oil future debated

3 September 2013 Last updated at 18:48 BST

Campaigners for and against Scottish independence have clashed over the future of North Sea oil.

The chancellor George Osborne flew to a production platform off Aberdeen to warn that the industry would be destabilised if Scotland left the UK.

The SNP said oil could help the country thrive.

James Cook reports.