The objectives of the study are to enable National Grid to better quantify the risk of natural landslides affecting its high pressure gas network. This will support its asset management and risk assessment processes allowing National Grid to quantify the risk to the general public at specific locations and also to understand any potential impact on gas supplies. As a result of this work National Grid will be able to decide on locations where it may be appropriate to undertake monitoring to detect any potential earth movement, or undertake remedial measures to mitigate the impact of a natural landslide.