This article examines variability in pay and performance management systems (PPMS) across foreign multinational companies (MNCs) in the UK, using a representative survey. It examines factors shaping PPMS for two groups, managers and the largest occupational group (LOG). It finds that US MNCs tend to have more PPMS practices in combination than do non‐US firms, but that for individual items nationality has relatively low influence, particularly for LOG. Other key factors in PPMS vary by employee group: for managers, international HR structural mechanisms for networking, organisational learning and the transmission of a global HR philosophy are important. For LOG, collective bargaining coverage is crucial. The article discusses the implications of the findings for ‘contingency’ approaches to HR ‘architecture’.