This article uses the lens of procedural justice theory to explore peoples’ experiences of an alternative dispute resolution (ADR) model: ombudsman services. We focus on two specific services that deal with complaints about financial services in Germany and the UK. Using and expanding upon procedural justice theory we ask two key questions: is the complaints process more important than its outcome; and does the importance of process and outcome vary between countries? In both countries we find a strong association between perceptions of procedural justice and outcomes such as overall perceptions of fairness, confidence in the ombudsman service, and decision acceptance. Against expectations, these associations are broadly invariant across the German and UK samples; but, despite this, all else equal German respondents expressed consistently more positive views. Our data add some nuance to the existing literature on procedural justice and suggest that the national context also plays a role in people’s decision-acceptance of ombudsmen. We suggest that national legal cultures provide for a framework of rules that guide people’s perceptions and behaviors in legal, quasi-legal and related environments.