This Markets Guidance describes how we will carry out market reviews under FSBRA and the outcomes that may follow. It also describes our concurrent competition law powers under the Enterprise Act 2002 (EAO2) to carry out market studies and to make market investigation references to the Competition and Markets Authority (CMA) in relation to participation in payment systems in the UK. This guidance, which has been issued under section 96 FSBRA, sets out the procedures that we will follow when we use these powers to investigate the markets for payment systems and the services they provide.