Acknowledgements

We are very grateful to the children and their parents and guardians for participating in the study. We would also like to thank the staff of participating schools and to relevant Local Authorities for their help with this research.

Funding for the study was received from the Wellcome Trust, the British Heart Foundation, the BUPA Foundation and the National Prevention Research Initiative. The funding partners for this National Prevention Research Initiative award were:- British Heart Foundation; Cancer Research UK; Department of Health; Diabetes UK; Economic and Social Research Council; Medical Research Council; Health and Social Care Research and Development Office for Northern Ireland; Chief Scientist Officer, Scottish Government Health Directorate; Welsh Assembly Government; Food Standards Agency; and World Cancer Research Fund.