The court of appeal has ruled that a diplomatic immunity claim from a Saudi billionaire and International Maritime Organisation (IMO) representative was irrelevant in a maintenance battle.

Sheikh Walid Juffali is being sued by his estranged wife Christina Estrada, who is fighting for a share of his £4bn ($5.7bn) fortune.

The billionaire tried to use his title as permanent representative to the IMO for St Lucia in order to avoid having his case heard in front of a UK court.

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