The Data Warehousing service provides cross-University access to a single accurate and consistent source of data, bringing in data from historical systems and mitigating the risk involved in local ad hoc approaches. The data warehouse gathers data – normally overnight - from multiple operational systems. It then applies consistent, agreed logic to them and presents them in data structures that are easily consumed by reporting tools. The warehouse databases track changes and create the snapshots that enable both historical and predictive reporting. The data warehouse makes it easier to comply with legal requirements around data security and to analyse and report information. It is currently used for selected student, research administration, libraries, HR and purchasing data. There is an ongoing programme to add further sets of data to this list.