Assessing applications for release licences on a case-by-case basis allows for the nature of the species, along with the circumstances and risks of release, to be comprehensively considered in response to a specific proposal. Further, an assumption of a species being of low risk without sufficient evidence may undermine efforts to ensure best practice and result in unintended consequences or impacts being found at a later date. Individual assessment allows for the impacts of a specific proposal to be understood, and requirements for consultation and consideration of impacts to be applied proportionality.