Survey: UKIDSS Large Area Survey Telescope: United Kingdom Infrared Telescope (UKIRT) Instrument: WFCAM Filters: Y, J, H, K Fields: COSMOS, GAMA-09, GAMA-12, GAMA-15, Herschel-Stripe-82, HATLAS-NGP P.I.: Reference: URL: http://www.ukidss.org/surveys/las/las.html Acknowledgement: The UKIDSS project is defined in Lawrence et al (2007). UKIDSS uses the UKIRT Wide Field Camera (WFCAM; Casali et al, 2007). The photometric system is described in Hewett et al (2006), and the calibration is described in Hodgkin et al. (2009). The pipeline processing and science archive are described in Irwin et al (2009, in prep) and Hambly et al (2008).