An $11 billion Damages Bill against Nigeria for a collapsed gas processing project which was procured by bribery has been thrown out by London's High Court.

The West African country was on the hook for the sum – representing around a third of its foreign exchange reserves – after a little-known British Virgin Islands-based company took Nigeria to arbitration over the deal.

But the High Court ruled in October that the contract was procured by Process & Industrial Developments (P&ID) paying bribes to a Nigerian oil ministry official.

Judge Robin Knowles also found that P&ID failed to disclose the bribery when it later took Nigeria to arbitration.

He said in a further ruling on Thursday that the damages award should be thrown out immediately, rejecting P&ID's argument that the case should be sent back to arbitration.

P&ID was also refused permission to appeal against the ruling, though the company can apply directly to the Court of Appeal.

By Sam Tobin, Reuters