The United Nations Convention on the Rights of Persons with Disabilities (CRPD) is rightly seen as a break from the past in mental capacity law. At the same time, implementation will occur in the specific existing legal and administrative contexts of each State. This article uses English mental capacity law to explore these issues. The English Mental Capacity Act 2005 (MCA) can be considered the best of the “old” paradigm. The article argues that there are continuities between it and a CRPD-compliant approach.