Welcome to STW (Non-Destructive) Ltd

STW (Non-Destructive) Ltd – one of the region’s leading non-destructive testing sub-contractors. From our modern, fully equipped facility in Sheffield, we deliver a wide range of in-house services, with the ability to provide testing and inspection services on-site thanks to our fleet of vehicles and dedicated engineers.

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What sets us apart

Operating beyond nationally accepted standards and stringent customer approvals to deliver exceptional service to challenging industries.


Our industry expertise

Drawing on many years industry experience, we develop efficient and effective testing programmes as a standalone service, or as part of an integrated production process.


STW in numbers

3 PCN qualified Level
5 mobile technicians
33 years established

Our services