The United Kingdom remains one of the world's last industrialized nations not to have adopted the CISG. The UK CISG debate has endured for decades, with existing analysis largely focusing on competition, assessing the relative merits of the CISG and English law. This article's analysis is complementary; focusing instead on coherence, and the private international law implications of UK accession. This article assesses contractual interpretation, and commodity sales, within an overarching private international law framework. Recognizing the necessity of existing competitive analyses, it makes the case for UK CISG accession on the basis of its complementary coherency perspective.