Question to the Department for Environment, Food and Rural Affairs:

To ask the Secretary of State for Environment, Food and Rural Affairs, what assurance mechanisms his Department has implemented to help ensure the accuracy of AI-derived data that forms part of the new UK peat map.

The England Peat Map, produced by Natural England as part of the Natural Capital and Ecosystem Assessment Programme, went through a rigorous science assurance process across Natural England, Defra and external peer reviewers. This science assurance covered the scientific design of the map’s production, the collection of the field data used to drive the model and testing the final modelled analysis which produced the map.

The AI-derived data was reviewed and refined through checking in the field, using field survey data, and the methods by which this was done were reviewed by independent Defra group technical experts and external academics. This included reviewing the data inputted into the models, the models’ training and validation, the models’ application, the models’ outputs, and covered all the map layers produced including peat depth, extent and vegetation layers. Beta testing of outputs across Defra group users was initiated a year prior to release and feedback was used to refine the models.

Limitations and precautions associated with the use of AI in the project are discussed in the England Peat Map final report, available on Natural England’s Access to Evidence website.