The UK Alternative Investment Market (AIM) was launched in 1995 and has been a great success with over 1200 companies now listed. In this article, we examine the development of AIM as it reaches its 15th year and discuss the potential pitfalls of the light touch regulation that is one of the attractions of AIM and identify potential corporate governance and ethical issues that may arise as a result of light touch regulation. We examine the central role of the nominated advisor (NOMAD) and draw on the findings of in depth interviews with 25 AIM participants including AIM company directors, institutional investors, nominated advisors and brokers. We highlight the influence of the NOMAD on these participants and potential governance and ethical implications. We also discuss some of the concerns that AIM participants have about the market. We examine some of the recent scandals on AIM to determine why these scandals occurred – were they, for example, attributable to corporate governance weaknesses? Finally, we offer some concluding comments to discuss the future of AIM. The findings of the article have important implications for investors and policymakers alike.