Abdel Hakim Belhadj, a Libyan military commander who is now the head of the Tripoli Military Council, is taking a civil action against former foreign secretary Jack Straw to examine his exact role in his rendition to Libya in 2004.
He says he was imprisoned and tortured when he was sent back to the country ruled by the Gaddafi regime. He is making a claim against Straw for damages from the trauma involved.
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The decision represents something of a victory for the president who will now be able to enforce most of his controversial 90-day ban.
Cool in the north, warmer air to the south
Police have warned the drug, known locally as "pink champagne", could be deadly.