In this ‘in conversation’ with, I talk to Hillary Chua of the National University of Singapore about a recent article in the Medical Law Review that she has co-authored with Camillia Kong and Michael Dunn, looking at how essentially identical mental capacity legislation in Singapore and England & Wales has had very different lives in both jurisdictions. We also think about different jurisdictions can learn from each other, for instance in how to approach capacity and in context and the interaction between cognitive impairment and undue influence.