We Build for the Industries That Cannot Afford to Fail.

Four sectors. One common thread: precision matters. We do not supply off-the-shelf cables. We build interconnect systems to the specific standards, tolerances, and documentation requirements of each industry we serve.
March26 automotive wire harness UK

Automotive

From ICE to EV. From Prototype to Production.
The automotive sector is in the middle of the most significant platform shift in a century. EV architectures demand lighter, smarter harnesses — and faster development cycles. March26 works directly with OEM engineering teams and Tier-1 suppliers to produce automotive wire harnesses that keep pace with your programme.
Standards USCAR, LV-214, IPC-A-620
Key Applications Dashboard looms, chassis harnesses, EV low-voltage harnesses, body harnesses, sensor looms
Why March26 UK-based assembly reduces lead times. Direct engineering contact. Prototype-to-production capability.
Pain Point Addressed Long lead times and inconsistent quality from overseas suppliers slow down EV programme delivery. We fix that.
Whether you are developing a new EV platform, running a motorsport programme, or sourcing replacement harnesses for specialist vehicles — March26 delivers precision at pace.

Aerospace & Defence

Traceable. Documented. Built to Fly
Aerospace harnesses are not like any other product we build. The stakes are higher. The tolerances are tighter. The documentation is non-negotiable. March26 is actively working towards AS9100D certification, with current processes aligned to IPC-A-620 Class 3 and aerospace EWIS requirements. We build for UAV platforms, ground defence systems, satellite subsystems, and fixed-wing applications.
Standards (target) AS9100D, IPC-A-620 Class 3, DEF STAN 59-411
Key Applications UAV harnesses, defence electronics looms, comms systems, sensor integration harnesses, satellite subsystem wiring
Why March26 British manufacturer. Domestic supply for UK defence programmes. Full traceability from material receipt to dispatch.
Pain Point Addressed UK defence primes need domestic, auditable suppliers. Overseas sourcing introduces risk. We provide a British alternative.
defence wire harness manufacturer
The UK space sector is targeting £60 billion by 2030. The defence budget is growing. March26 is positioning itself at the heart of British advanced engineering — and that starts with the wiring.
medical wire harness manufacturer

Medical Devices

When Reliability is a Clinical Requirement.
In medical device manufacturing, every component in the signal chain matters. March26 manufactures medical-grade cable assemblies and wiring systems for diagnostic, imaging, and monitoring equipment. We work to medical material specifications, with full component traceability and documented build records that satisfy regulatory audit requirements.
Standards ISO 13485-aligned documentation, medical-grade insulation materials, RoHS and REACH compliant
Key Applications Diagnostic imaging cables, patient monitoring looms, surgical device interconnects, low-noise signal cables
Why March26 Full documentation trail. Clean build environment. Direct engineering contact for prototype and small-series runs.
Pain Point Addressed Medical device manufacturers need suppliers who understand regulatory requirements — not just cable suppliers who happen to make medical parts.

We are not the largest cable assembler in the UK. We are the most focused on getting the details right — and in medical device manufacturing, the details are everything.

Battery, EV & Energy Storage

The UK's Battery Industry Needs a Domestic Interconnect Supplier. We Are It.
The UK Gigafactory pipeline is real and accelerating. AESC in Sunderland, Envision, Agratas, and emerging new entrants are investing billions in UK battery capacity. Every one of those facilities needs precision cell interconnectors, HV cable assemblies, and battery management system wiring — and until now, almost all of it has been imported.
Standards IEC 62133, automotive-grade HV insulation, UL-rated materials available
Key Applications Cell-to-cell busbars, HV harness assemblies, battery pack interconnectors, EV charging harnesses, energy storage BMS wiring
Why March26 Purpose-built for the UK battery supply chain. Domestic production = shorter lead times, lower risk, auditability.
Pain Point Addressed Gigafactory procurement teams cannot afford supply chain fragility. A domestic UK supplier reduces risk at every stage of production ramp-up.
EV wire harness UK
March26 is specifically positioned as a tier-2 link to UK and European battery manufacturers. We are investing in our production capability to grow with this sector — from prototype interconnectors today to volume supply as the Gigafactories scale.