Defence and Detail: How Surface Finishing is Quietly Enhancing the UK's National Security

With the UK is ramping up investment in its defence manufacturing capabilities. From new naval platforms to next-generation air systems, the emphasis is on resilience, readiness, and domestic supply. But at the heart of every advanced system lies a simple truth: components must be flawless.

That’s where companies like Midland Deburr & Finish Ltd step in. Based in Lye, Stourbridge, this specialist SME delivers subcontract vibratory deburring for precision components used across defence, aerospace, and security applications. Their job? Remove every burr, edge, and microscopic imperfection before a part moves to final assembly. The margin for error? Zero.

"A burr in the wrong place can cause a misfit, a short circuit, or a premature break," says Managing Director Chris Arrowsmith. "In defence work, where lives depend on reliability, you don’t get second chances."

Vibratory deburring may not make headlines, but its importance is quietly growing. With systems becoming more compact and integrated, tolerances are tighter, and surfaces must be pristine for both mechanical fit and coating adhesion. A flawed surface can compromise sealing, alignment, or even radar signature.

"We’re not just removing sharp bits," Arrowsmith explains. "We’re protecting the integrity of the whole system. Our vibratory deburring work prevents premature wear, ensures coatings bond properly, and helps avoid failure in the field."

Midland Deburr’s customers include Tier 1 defence suppliers, who rely on them for fast, precise, and confidential finishing. With increasing pressure to reshore sensitive manufacturing, Arrowsmith says domestic subcontractors are becoming a vital strategic asset.

"The defence industry relies on every part doing its job under pressure. And that starts with flawless prep."

In a world of hybrid threats and supply chain risk, Arrowsmith believes the UK must double down on its finishing capabilities. "We’re part of the last mile in manufacturing. If you want systems that are ready when needed, you can’t afford to overlook surface finishing; especially vibratory deburring."

The firm is investing in both workforce development and equipment upgrades to meet future demands. "We take pride in our work because we know what’s at stake. Our job is to make sure the parts we touch never let anyone down."

With more components now being sourced within UK borders, Arrowsmith sees long-term opportunity for SMEs who can combine speed, precision, and discretion. "We’re not just a supplier – we’re part of the national capability. And we’re ready to deliver."