Acknowledgements
Thanks to all members of the project team at the DVLA for their help with this project and for the support we received from the DVLA Executive Board who approved and supported the Prevail Intervention programme and three-stage evaluation. We are particularly grateful to Louise White and Andrew Falvey as Executive Directors of the DVLA, both of whom drove this project forward. Our sincere thanks go to Amanda Payne for the organisation of the train-the-trainers programme at DVLA and for the oversight and management of the intervention delivery process. We are indebted to the Prevail trainers at the DVLA: Rebecca Roach, Hayley Morgan, Clare Moses, Vicki Davies, and Abigail Williams. The future success of Prevail will undoubtedly be due to the professionalism, hard work, and excellent coaching skills of the Prevail trainers, all of which were very ably led by Amanda Payne to whom we are grateful. We are indebted to Kirsten Howell and Melissa Lewis for supervision of the data entry, veracity checks on data quality, and processing of the qualitative feedback data on Prevail. We also thank Alys Docksey for preparatory work in development of the SASS measure which she completed as part of her Research Masters at Swansea University. We also thank Dr. Eric Heidel (University of Tennessee), an Accredited Professional Statistician, who acted as the statistical consultant on the project.