Thermal imagery for selected areas of England was taken by a FLIR SC 6000 HS thermal camera mounted on a specially designed survey aircraft over the course of 2009 and 2010 by The GeoInformation Group (TGG) as part of the Cities Revealed project. The data were then acquired by the Landmap project. Positioning data were also recorded so that the thermal data could be accurately geolocated in post-processing. The thermal data were captured between 7pm to 11pm to avoid solar activity which would produce false readings and when most houses would be heated, in cold (less than 10C) dry weather so that the temperature differential between indoors and outdoors was maximum. The thermal camera has a resolution of <0.02C.

The Joint Information Systems Committee (JISC) funded Landmap service which ran from 2001 to July 2014 collected and hosted a large amount of earth observation data, such as thermal imagery, for the majority of the UK. After removal of JISC funding in 2013, the Landmap service is no longer operational, with the data now held at the NEODC.

When using these data please also add the following copyright statement: Cities Revealed Copyright: The GeoInformation Group yyyy or UKMap Copyright: The GeoInformation Group yyyy