This paper presents the results of excavations at an Upper Palaeolithic site that was discovered at Rookery Farm, Great Wilbraham, Cambridgeshire in 2002. Diagnostic lithic material – three penknife points – indicates that the site was probably occupied between 12,000 and 11,000 BP, a time of deteriorating climatic conditions. Excavations discovered a small task site, located to take advantage of water and a lithic raw material source. The paper discusses Rookery Farm in relation to other sites of this date and patterns of mobility and settlement across north-west Europe.