New U.K. clinical trials regulations coming into force today, April 28, aim to reduce the time taken to get approval for studies and introduce a category of lower risk trials which will be automatically assessed in 14 days. The key measure to cut timelines is the Combined Review, under which sponsors will be able to submit a single application for regulatory review by the Medicines and Healthcare products Regulatory Agency and ethics review by the Health Research Authority, the body responsible for managing ethics committees.