4. The working group carried out an extensive consultation exercise, obtained oral and written evidence from a wide range of experts and carefully examined scientific data. Visits were made to a number of egg producers, both large and small, and meetings were held with representatives from industry, research bodies and from animal protection societies.
5. Those who gave evidence and information are listed at Appendix B and we would like to thank all who participated. In particular, the Council is indebted to Mr Arnold Elson of ADAS who attended the working group meetings and visits and provided expert advice.
6. The study examined three main types of production system: cages (including enrichment), free range and other alternative systems. Each type was considered in its own right and no attempt was made to compare systems.