Project Cleansweep takes its name from a Ministry of Defence report issued in 2011. The report assessed the risk of residual contamination at sites in the United Kingdom used in the manufacture, storage, and disposal of chemical and biological weapons from World War I to the present day. Photographs of more than eighty sites take us to Dorset and Devon, the Peak District, the woodlands of Yorkshire, and the countryside of the Salisbury Plain, from the coastlines of East Anglia, the West Counties and Wales to the remote Scottish Highlands and the Irish Sea.