The development of child and youth advocacy has been informed by varying theoretical perspectives and in the last decade has been increasingly incorporated into policy and legislation for young people in receipt of welfare services. Through examining the varying perspectives of young people, advocates and commissioners of advocacy services it can be seen that although there is some consensus about how advocacy should be provided, the construction of advocacy by adults may have a significant impact on how it is experienced by young people. This paper draws on material from five advocacy projects to examine how advocacy is constructed by those involved in the provision and receipt of services. It argues that there is a danger that the construction of advocacy in an adult proceduralised way is likely to compromise its potential to challenge the structures that deny young people opportunities to participate in decision making about their lives.