European Contract Law unification projects have recently advanced from the Draft Common Frame of Reference (2009) to a European Commission proposal for an optional Common European Sales Law (2011) which is to facilitate cross-border marketing. This book investigates for the first time how CESL and DCFR rules would interact with various aspects of domestic law, represented by English and German law. Nineteen chapters, co-authored by British and German scholars, examine such interface issues for eg pre-contractual relationships, notions of contract, formation, interpretation, and remedies,...