This spreadsheet contains a list of postcodes where Xoserve holds no record of a gas connection by either large or small gas transporters.This data was produced using Xoserve's list of off-gas postcodes, which is available at http://www.xoserve.com/wp-content/uploads/Off-Gas-Postcodes.xlsxXoserve's data shows all postcodes which do NOT have any gas connection, domestic or non-domestic. The data is dated March 2013 and was published in November 2013.Note this file contains London postcodes only. For the rest of Great Britain data visit the CSE website. http://www.cse.org.uk/resources/open-data/off-gas-postcodesA list of other administrative areas that the postcode relates to is included in the file.