Quality & integrity since 1981

Quality & Accreditations

Quality is of paramount importance to STW (Non-Destructive Ltd): it is the foundation that our business and reputation are built upon. And we have a proud record of providing a quality service that is delivered to agreed deadlines, time and time again. This gives our customers confidence in the service we provide, and we welcome visitors to our facilities to experience the service first hand.

Qualified operators

Our highly skilled and competent workforce are essential to the ongoing success of STW (Non-Destructive) Ltd. Our customers benefit from their commitment to maintaining high levels of service and their ‘can do’ approach to work.

The long term stability and dedication of our team is vital in delivering outstanding service and we remain committed to the continued training and development of personnel at all levels.

We have a wide range of technicians at STW Non-Destructive Ltd ranging from trainees through to skilled senior technicians with over 30 years’ experience in NDT. All NDT operators are qualified to a minimum of PCN level 2 or to level 2 in accordance with SNT-TC-1A.


Achieving second and third party, independent quality approvals is an integral part of the STW (Non-Destructive) Ltd ethos. We strive to provide the best service in the market without compromising on quality. We currently hold the following approvals and accreditations:


Group Quality Approval

BS EN ISO 9001:2015

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Group Environmental Approval

BS EN ISO 14001:2015 
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Group Quality Policy

SSG Group Quality Policy Oct22:Rev 8

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Group Environment Policy

SSG Group Environmental Policy AUG 22:Rev 3

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Group Health & Safety Policy

SSG Group Health & Safety Policy AUG 22:Rev 2

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