The document discusses ethics and reproducibility issues related to using data in safe havens. It summarizes the UK Data Service, which curates social science data and uses various safeguards to provide access to controlled data through its spectrum of access. It describes legal gateways for data sharing, the Digital Economy Act, and the UK Statistics Authority's accreditation process for researchers and projects. It also discusses the UK Statistics Authority's ethics self-assessment tool and factors that can impact reproducibility when data and code are behind access restrictions in safe havens.