Treaties, as it is sometimes expressed, are not self-executing. Quite simply, a treaty is not part of English law unless and until it has been incorporated into the law by legislation.’ (J. H. Rayner...

Treaties, as it is sometimes expressed, are not self-executing. Quite simply, a treaty is not part of English law unless and until it has been incorporated into the law by legislation.’

(J. H. Rayner (Mincing Lane) Ltd  v  Department of Trade and Industry  [1990] 2 AC 418, 500 (Lord Oliver))

C onsider whether Lord Oliver’s statement that unincorporated treaties cannot affect legal obligations within the UK’s domestic legal systems remains valid and evaluate the reasoning behind this rule.