The Control of Asbestos Regulations (CAR) came into force on the 6th April 2012, setting the minimum standards required for the protection of employees from risks related to the exposure to asbestos. CAR 2012 includes a requirement to carry out a post-implementation review (PIR) to evaluate the effectiveness of the regulations after they have been implemented and operational for a period of five years. As part of the PIR, this research, commissioned through the analysts advising policy officials, was undertaken by professional psychologists and human factors specialists in HSE’s Buxton laboratory. The approach taken comprehensively explored dutyholders’ views and experiences of how the regulations work in practice, and provided a measure of independence from the policy officials undertaking the broader evaluation and review of CAR 2012. The aim was to examine the views and experiences of a broad range of dutyholders about: i) whether the regulations are sufficiently clear to achieve their objective; ii) how effective they are in protecting workers and others from the risks of asbestos; and iii) how they work in practice, including benefits and any issues that are encountered in complying with the regulations.