There has been an ongoing dispute about inequalities in health ever since the suppressed publication of the Black Report in 1980. It has recently been given a new edge by three publications: the proceedings of an SSRC Workshop held in November 1983 and the Registrar General's Decennial Supplement for 1979–1983, and another half-suppressed report, this time from Health Education Council. The first and third broadly claim that inequalities in health are widening; the second that they are irrelevant. This paper reviews the debate since 1980 around the issues of measurement (how to assess differences between social groups and how to compare across time) and the four kinds of explanation examined by the Black Report. The concluding discussion emphasises the essentially political nature of the debate over the ‘trends’ but concludes that, whilst most agree on the importance of materialist/structuralist variables, there are differences in the policy implications of the different explanatory positions. However, on the whole these will not be resolved by ‘further research’: the time is long overdue for a redistribution of resources to eradicate poverty.