British Precision. Built Into Every Connection.

March26 Engineering manufactures precision wire harnesses and electrical interconnect systems for automotive, aerospace, defence, medical, and battery applications. Designed and assembled in the United Kingdom.

Est. 2026 · London, UK | Backed by 38+ Years of Manufacturing Heritage | EV · Energy · Aerospace · Industrial | UK Factory — Q4 2026

You Need Parts That Work. Every Time.

Most procurement teams and design engineers know the problem. Supply chains are fragile, lead times are long, and quality is inconsistent. March26 was built to fix that — right here in the UK.
The Pain Point vs How March26 Solves It:
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Long lead times from overseas suppliers

International shipments, customs delays, and minimum order quantities slow your programme down.

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March26 assembles in the UK.

Shorter lead times, direct communication, and no border delays. You deal with us — not a middleman three time zones away.

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Inconsistent quality and no traceability

Off-the-shelf or grey-market harnesses with no documentation, no standards compliance, and no accountability.

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Every March26 assembly comes with full material traceability

100% end-of-line electrical test, and documentation aligned to IPC, USCAR, and aerospace standards.

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Suppliers dont Understand your Sector
Generic cable suppliers who don’t know the difference between automotive-grade and aerospace-grade — and it shows.
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We design to your sector's requirements.

Automotive, Defence, Medical, Battery. Our team understands the standards, the tolerances, and the consequences of failure.

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No domestic alternative — until now

UK engineers have had limited choice. Domestic precision harness manufacturing has been almost nonexistent for two decades.

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March26 is changing that.

British-assembled, British-tested, with a direct line to our engineering team. We are the domestic alternative the UK industry has been waiting for.

Industries We Serve

Built for Britain's Most Demanding Sectors

Automotive
Wire harnesses and EV components for OEMs and Tier-1 suppliers.
March26 automotive wire harness UK
Aerospace & Defence
AS9100D-aligned assemblies for UAVs, platforms, and defence electronics.
defence wire harness manufacturer
Medical Devices
Medical-grade cabling for diagnostics, imaging, and life-critical equipment.
medical wire harness manufacturer
Battery & EV
HV interconnectors and busbars for UK and European Gigafactories.
EV wire harness UK
Why March26

Why Engineers Choose March26

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British Assembly

Final assembly and 100% end-of-line testing at our UK facility. Every harness that leaves our floor has been built and tested here.

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Full Traceability
Material certificates, crimp analysis records, and test reports for every assembly. Documentation that stands up to any audit.
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Sector Knowledge
We build for automotive, aerospace, defence, medical, and battery applications. We know what your sector demands — and we build to it.
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Agile & Responsive
No call centres. No automated responses. You speak directly to the team designing and building your components.
Need an Estimate?

Get Your Free Detailed Quote

Speak to our engineering team about your component or harness requirements.
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