National infrastructure programmes can have public safety benefit but also carry a significant safety risk: missing, incorrect or late data could lead to injury or death to users or the public. Assuring quality of data input in these programmes is a major challenge in terms of human factors and managing multiple data sources. Assuring the integrity of the data maintained and output by the programme's IT systems is a problem due to large data volumes and system complexity. This presentation provides examples of public services where IT is having an increasing presence and where large volumes of data are used increasingly to support critical decision-making. It emphasises the importance of raising system safety awareness in the procuring organisations, and of convincing them that an "end-to-end" approach to implementing safety risk management is essential and that high-quality data input and system/data integrity are worth paying for.