Acknowledgements: We would like to thank the practitioners in our five sites for their contribution to this project. Perhaps it goes without saying that it would not have been possible without their input but we would like to thank them especially for their enthusiasm about the project and for contributing to the different elements of the project. Similarly, we would like to thank the parents who gave so readily their time to contribute to the project. It was clear that they valued the service and wanted to improve it for other parents. We are especially grateful to our PPI groups who helped steer the project, as did the Expert Advisory Group hosted by Public Health England and the Department for Education. And, finally, we would like to thank Nikki Hawley, administrator at Newcastle University, for help in data entry and support for the project.Publisher PD