Data on the sex industry is notably hard to obtain. Existing evidence points towards an increase in the number of people selling sex, particularly through the online industry. The growing and increasingly diverse population poses challenges to service provision, as new groups are less visible and less likely to be in contact with specialist services. Simultaneously, there are increased calls for policies regulating the sex industry to be grounded in evidence. Relying on systematic literature and data reviews, this article provides a synthesis of the evidence on the prevalence of sex work and prostitution in England and Wales. It shows that no existing source allows producing reliable estimates of the size and characteristics of sex markets. As a result, policy is informed by partial pictures. The article proposes local mapping, an underused approach, to inform both policy development and service provision.

In England, sex workers are placed at the edges of the law. How the social and legal status of sex workers impacts on their perception of and interaction with the law in a semi-legal setting has not yet been explored. Drawing on fifty-two qualitative interviews with indoor and outdoor sex workers in England, this study investigates their disposition to the law, legality and the state. The commonalities and discrepancies between the experiences of indoor and outdoor sex workers reveal the influence of the combination of legal framework and social status on sex workers’ legal consciousness. This study finds that, even in a setting of semi-legality, sex workers attempt to avoid contact with state authorities. However, this aversion to the current law does not prevent them from making claims for legal change. Surprisingly, indoor and outdoor sex workers hold opposing views on the appropriate level of regulation and state involvement in the sex industry. Remarkably, although outdoor sex workers have more negative experiences with arbitrators of the law, they desire the law's protection. In contrast, indoor sex workers’ main grievance is for sex work to be a legitimate industry that can operate with only minimal state control. These differences in outdoor and indoor workers’ legal claims are explicable by sharp cleavages in social status, vulnerability and degree of criminalisation. These findings demonstrate that intra-group differences in the legal consciousness of marginalised groups are key to understanding the role of social and legal status in shaping legal claims.