9Power to make foreign judgments unenforceable in United Kingdom if no reciprocity
(1)If it appears to His Majesty that the treatment in respect of recognition and enforcement accorded by the courts of any foreign country to judgments given in the superior courts of the United Kingdom is substantially less favourable than that accorded by the courts of the United Kingdom to judgments of the superior courts of that country, His Majesty may by Order in Council apply this section to that country.
(2)Except in so far as His Majesty may by Order in Council under this section otherwise direct, no proceedings shall be entertained in any court in the United Kingdom for the recovery of any sum alleged to be payable under a judgment given in a court of a country to which this section applies.
(3)His Majesty may by a subsequent Order in Council vary or revoke any Order previously made under this section.