Studies based on British Crime Survey (BCS) data suggest that the overall incidence of workplace assault is relatively low. However, these data have a number of limitations. They include only assaults carried out by clients or the public, provide limited information about the individuals involved and their workplaces, and tell us little about perceived causes of violence at work. The 2008 Workplace Behaviour Survey (WBS) presents a more detailed picture than has hitherto been available about the extent and nature of interpersonal assaults at work. This paper discusses in detail the WBS findings regarding the prevalence, frequency and patterns of workplace assaults in Britain. © The Author 2010. Published by Oxford University Press on behalf of the Centre for Crime and Justice Studies (ISTD).