It is common for litigation to draw upon expert evidence to assist a judge to arrive at a balanced decision. This paper examines the role of one type of expert evidence submitted to courts, namely cultural expertise (CE), which provides information on socio-cultural issues such as kinship, family, marriage, customs, language, religion, witchcraft and so on. This type of evidence is primarily the result of qualitative, ethnographic research. I begin by examining the views of experts who have provided CE to courts/mediators; I then look at how judges view and make use of CE, and finally I examine lawyers’ views on CE. To address gaps in published research, I interviewed British barristers to understand how they make use of experts in the cases they litigate. Finally, I have surveyed legal decisions made by all British appellate courts to arrive at an approximate idea of the extent to which CE has been submitted in English and Welsh courts. I conclude that the extent to which CE—and other types of socio-legal evidence—is submitted varies considerably depending upon the legal/evidentiary procedures followed in different jurisdictions and in different countries.