The "monumental" operation to re-float and remove the wrecked Costa Concordia cruise ship will start in the next few days.
The project is set to cost £190 million and to take up to a year to complete.
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The event was Ant McPartlin's first public appearance since he announced he was splitting from his wife.
Trade secretary Liam Fox's potential post-Brexit deals would be of no use to British carmakers due to tariffs when selling abroad.
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