The rst three papers in this issue are based upon papers presented to a symposium that we organized at the 7th European Congress of Psychology, in London, July 2001. They were chosen to re ect some of the important recent and current research projects being undertaken in England and Wales, which address the needs of children with speech and language needs. Two focus speci cally on the subset of children with primary language dif culties, referred to here as children with speci c language impairment (SLI) by Knox, and as children with speci c speech and language dif culties by Lindsay et al. The third paper (Law et al.) is derived from a study that considered all children with speech and language needs whether the language dif culties were primary, or secondary to other problems such as hearing or intellectual impairment.The planning of services for children with speech language and communication needs represents not only a particular set of concerns speci c to these children. The development of services raises important issues concerning the wider population of children with special educational needs (SEN), and the direction of government policy. In the present case, the major policy issues are inclusion and collaborative practice. Such considerations themselves have an impact on other areas of policy and practice developments, including initial training and continuing professional development, and evidence-based practice.