In this article we identify the key survey data for examining the issue of equality in the lives of disabled people in the UK. Such data is essential for assessing change in quality of life over time and for the evaluation of the impact of policy initiatives. For each data source we consider definitions, data collection, issue coverage, sample size and data access. It is evident that there is only limited survey data on the lives of disabled people in the UK. A number of national surveys include questions on disability, but many offer only limited coverage. There is a tendency to focus on the medical aspects of disability and a failure to clearly distinguish disability from other health issues. Moreover, disability definitions vary and sample sizes are often too small to compare differences by age, gender, ethnicity or locality. For effective policy development there is a need to identify and measure what leads to change in disabled peoples' lives. (Contains 1 note.)