About GUL

Since its incorporation in 1999 by members of a research team at Imperial College’s Mechanical Engineering Department, Guided Ultrasonics Limited (GUL) has pioneered the Guided Wave Testing (GWT) method for pipeline inspection and monitoring. 

GUL is a high technology company with a unique culture based on world class customer service, excellence, teamwork, and commitment to meritocracy. The quality of our people is the cornerstone of our continuing success. We stand out because we are responsive to and understand our client needs.

GUL develops and delivers innovative, visionary and essential technologies for a substantial and diversified client base around the world that includes oil and gas companies, refineries, chemical processing, transport infrastructure, and power generation enterprises. We do not provide an inspection service. Our inspection equipment and monitoring services provide inspectors and asset owners information that enables them to safely increase the efficiency of their facilities. 

The company has its headquarters in London (UK), and offices in Houston (Texas, USA) and Kuala Lumpur (Malaysia), and a network of representatives and distributors all over the world.


All Guided Ultrasonics’ systems use the Guided Wave Testing (GWT) method for inspection of metallic structures for the presence of defects caused by corrosion or erosion.

GWT is a non-destructive method for determination of the condition of elongated structures – commonly pipes, but rails and others can also be tested.

Guided Wave Testing was developed as a practical method of testing of engineering structures at Imperial College, London in the 1990s, by the team that then founded GUL.

The latest GUL inspection systems embody the fruits of our heavy commitment to R&D – spend as a percentage of revenues is far above industry averages, we have one of the world’s largest and strongest teams in Non-Destructive Testing (NDT), and strong ongoing links to Imperial College.

Message from the CEO

“I first started the research into guided waves (Lamb waves) over 30 years ago. My post-graduate research was focused on guided waves for the inspection of pipes, eventually to the point of  a field-ready system. 

We built our first guided wave system in 1996; our research and development effort has been continuous since then. Although the original equipment, and the office, have been transformed over the years, our founding team are all still here, joined by a growing number of young, enthusiastic and talented professionals.

Our journey is a joint effort between GUL and our partners, leading the NDT industry, to deliver a first-rate service to major energy and power companies around the world. We look forward to working with you.”

Dr David Alleyne

Our vision is to

remain the global leader in the development and delivery of innovative and essential systems and services for inspection and monitoring, based on guided wave technologies, converting information into insights in support of the digital transformation of integrity management of industrial assets.

Our mission is to

  • find the most innovative and creative solutions to our clients’ needs
  • design, manufacture and supply cutting-edge non-destructive testing equipment and software;
  • provide services and data analytics that realise the full value of the information and insights derived from the data;
  • serve a substantial and diversified client base around the world including oil and gas (production, transmission and refining), chemical processing, transport and power generation enterprises;
  • recruit and retain a world-class diverse team, that thrives on resolving challenging problems and producing meaningful results;
  • ensure that our business makes visibly positive contributions to our people, strategic partners, suppliers and the community.


Our quality management system is critical to GUL’s ability to compete and maintain technical and commercial leadership. GUL’s quality management is run according to ISO 9001:2015 and is accredited by a UKAS authorised organisation for the products, services and training provided by the company. All levels of the company use the system to support and facilitate continuous improvement.

GUL is committed to looking after environment and ensuring that everything that helps the sustainability of our world and the world around us.

Legal / Tax

  • Wavemaker®, gPIMS®, GUL®, QSR®, QSR1®, G‑Scan®, gMAT®, and Compact® are registered trademarks of Guided Ultrasonics Ltd.

Guided Ultrasonics Ltd.

  • is registered in England with Company Number 03809900,
  • with registered & trading address: Wavemaker House, Unit 3 Brentwaters Business Park, The Ham, Brentford, Middlesex, TW8 8HQ, UK,
  • and VAT registration GB 737 598 185.

GUL Americas Inc.

  • is registered in Texas with Company Number EIN-84-2746159,
  • with trading address: 1322 Space Park Dr, Suite C151, Nassau Bay, Texas 77058, USA.

GUL AsiaPac Sdn. Bhd.

  • is registered in Malaysia with Company Number 201901040800 (1350130-T),
  • with registered & trading address 27-3, Jalan Medan Setia 1, Bukit Damansara, 50490 Kuala Lumpur, Malaysia.
Help & Support
Need support? Here you'll find how to contact the team that can give the assistance you need.
Get help & support
© 2024 Guided Ultrasonics Ltd. All rights reserved