A Saudi billionaire could make a ‘mockery’ of the English legal system if he uses diplomatic immunity to avoid paying his supermodel ex-wife a multi-million-pound divorce settlement, a senior MP has warned.

Tory MPAndrew Rosindell, a member of the Commons Foreign Affairs Select Committee, last night raised serious questions over the High Court case between oil tycoon Sheik Walid Juffali, 60, and Christina Estrada, a US-born Pirelli calendar girl.

Within months of proceedings starting in London, Mr Juffali was appointed St Lucia’s permanent representative to the UN’s International Maritime Organisation – despite spending little time on the Caribbean island and having no obvious experience of maritime affairs.

The move grants him diplomatic immunity – and so could leave Ms Estrada, 53, who has a 13-year-old daughter with the oil tycoon, without any financial agreement.