Chapter 4 analyses the Commonwealth-driven approach to reciprocal recognition and enforcement, referred to in this book as the ‘Commonwealth Model’. At its core, the Commonwealth Model is a statutory judgment registration system that is premised upon British dominion, seconded, only where historical ties (but not dominion) extends, by reciprocity. Because this approach substantially replicates or relies for efficacy on its common law underpinnings, this chapter includes an analysis of these underlying common law foundations and approaches to recognition and enforcement.