Precision Metal Fabrication & Engineering Since 1992
When others say impossible, we say interesting.
If it requires an expert touch, robust engineering, and precise execution – we’re the firm to call.

The people behind the precision
With 100+ years of engineering expertise, our leadership team are industry leaders – well-known and well-liked across the sector. The Evans heritage remains strong, but new directors with different backgrounds are steering JGB into a more ambitious, diverse future.




The origins of JGB Engineering
A family-run business for 3 generations, JGB Engineering has grown from a traditional firm into a cutting-edge precision outfit – serving customers all around the world from its triple-unit base in Gloucester.

1992
Founded by John Williams, Glyn Evans and Barrie Evans, JGB Engineering came to life in Merchants Road.
1998
Rapid growth and an upgrade required - JGB moves to larger premises at Corelin Road.
2009
Investments in advanced machinery, capacity increased, outputs improved, and another move – Units 18/19 at Mill Place.
2019
Following a successful management buy-out, the next generation takes the reins, leading JGB into a new era.
2025
Units 18/19 becomes
Units 17/18/19, as the company explodes in growth under new leadership.
Good enough is never good enough. Every weld, every rivet, and every join has to meet and beat our expectations – before it gets anywhere near you.
We're not just another supplier – we get to know you, your team, your business, and your project. We don't sell to you, we partner with you.
We solve challenges that other engineers won't even touch – and we specialise in finding new ways to tackle common problems.

Our partnership principles
We work closely with architects, contractor, or project managers, and operations leaders – integrating seamlessly with your workflow and objectives.
Regular updates, solid timelines, and honest feedback ensures that you always know what's going on, all throughout your project.
We adapt our processes to match the way you work, the milestones you need to hit, and the end result you need to achieve.
Robust quality control, watertight admin, and full certification/documentation all guarantee a perfect final product.
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