Guided Ultrasonics Limited (GUL) was established in 1999 by members of a research team from the Department of Mechanical Engineering at Imperial College and is now the world’s leading supplier of guided wave pipeline testing equipment, training and services. Guided wave testing (GWT) is a relatively new non-destructive testing (NDT) method that GUL has pioneered since its incorporation and the company has led the way in setting the standard for pipeline inspection and monitoring worldwide. GUL is committed to continuous improvement to meet the needs and expectations of our customers as well as the industry in general.