Linewatch is a joint initiative between Esso Petroleum Co Ltd, BP, E-ON, Shell, Mainline Pipelines Ltd, BPA, Total, ConocoPhillips, Sabic, INEOS, The Oil and Pipelines Agency (Government Pipelines and Storage System) and Manchester Jetline Ltd. Between them, the 11participants account for some 5,725 km of buried oil/gas pipelines in England, Wales and Scotland.