Sample information on approx. 7000 households which have agreed to be recontacted as part of this research project. Can be linked to Senior Research and Evaluation (SRE) 3B but is stored separately and will be deleted after post-implementation survey. The data is stored electronically and in paper form by the contractor (AECOM) and is shared with supply chain members Office of National Statistics (ONS) and University of the West England (UWE) under the terms of the Data Protection Act.