Westwire Harnessing
Westwire Harnessing is a UK-based manufacturer of mission-critical electrical wiring interconnection systems, electromechanical assemblies, and box builds for aerospace and defence OEMs, serving fighter aircraft, drones, armoured vehicles, naval, and space platforms since 1987.
- Company typePrivate
- Founded1987
- HeadquartersSwindon, United Kingdom
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Westwire Harnessing does
Westwire Harnessing Ltd is a UK-based manufacturer of electrical wiring interconnection systems (EWIS), electromechanical assemblies, box builds, RF cables, and speciality products including fibre optics and industrial rail harnesses. Founded in 1987 and headquartered in Swindon, the company serves military and civil aerospace, defence land systems, space, naval, and industrial customers, with named application areas covering fighter aircraft, drones and UAVs, military airlifters, defence helicopters, armoured vehicles, weapon control systems, satellite systems, and frigate platforms. Production is built around high-reliability, mission-critical harnessing where the company emphasises safety, ruggedisation, and precision engineering for extreme environments.
The company's business model is direct, project-based B2B manufacturing sold to top OEMs through enterprise field sales and industry events such as Farnborough Airshow; pricing is custom and quote-based rather than publicly disclosed. It holds the full aerospace and defence supplier qualification stack relevant to the UK and broader European market, including AS9100D, ISO 9001:2015, JOSCAR, RISQS, Cyber Essentials and Cyber Essentials Plus. The company is a wholly-owned subsidiary of India-headquartered SASMOS HET Technologies, which acquired it in 2021 as its first investment outside India and provides technological, tooling and lean-manufacturing support.
In February 2026 Westwire opened a new Swindon plant, doubling its facility footprint to over 21,000 square feet and announcing 80 new jobs, with management targeting a doubling of output over the next three years to capture defence demand. The company sells into the UK as its primary market and has a stated international customer base in the United States, European Union and Morocco, with a dedicated Head of Business Development & Customer Contracts covering those regions.
Westwire Harnessing firmographics
Firmographics- Name
- Westwire Harnessing
- Legal name
- Westwire Harnessing Ltd
- Website
- https://westwireharnessing.co.uk
- Company type
- Private
- Founded year
- 1987
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Westwire Harnessing is a UK-based manufacturer of mission-critical electrical wiring interconnection systems, electromechanical assemblies, and box builds for aerospace and defence OEMs, serving fighter aircraft, drones, armoured vehicles, naval, and space platforms since 1987.
- Ownership category
- akta.pro rank
Westwire Harnessing industry classification
Industry- Product category
- Aerospace & Defence Wiring Harnesses
- NAICS
- Communication and Energy Wire and Cable Manufacturing (33592), Other Communication and Energy Wire Manufacturing (335929), Motor Vehicle Electrical and Electronic Equipment Manufacturing (336320)
- SIC
- Electronic & Other Electrical Equipment (No Computer Equip) (3600), Electrical Industrial Apparatus (3620)
- akta.pro primary industry
- Aerospace Electrical Wiring Interconnect Systems (EWIS) & Harnesses (IMABANAD)
- akta.pro secondary industries
- Vehicle Wiring Harnesses & Cable Assemblies Manufacturing (IMACAJAA), Cable Assemblies & Wire Harnesses (HDAHAOAB), Connectors & Interconnect Components (Industrial connectors, terminals, sockets, backplane) (IMAGAJAC), Data, Communications & Fiber Optic Cable (IMADAMAD)
Keywords
Where Westwire Harnessing is headquartered
LocationHeadquarters
- HQ city
- Swindon
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
Westwire Harnessing business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Operations, Supply Chain, Infrastructure, Technology or R&D, Marketing or Sales
Revenue model
- Electrical Harness Manufacturing: B2B manufacturing of custom electrical harnesses and interconnection systems for aerospace and defence customers. Revenue generated through project-based contracts with OEMs and defence contractors.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels3 records
Westwire Harnessing product offering
Product offeringCore offering
Westwire Harnessing designs and manufactures Electrical Wiring Interconnection Systems (EWIS), electromechanical assemblies, box builds, RF cables, and mission-critical electrical harnesses for aerospace and defence OEMs. The company also produces specialty products including fiber optics and ruggedized harnesses for industrial rail systems, delivering complete integrated manufacturing services from concept and prototyping through to full-scale production. Customers include top OEMs across aviation, defence, space, naval and industrial sectors, served from the company's 21,000+ sq ft facility in Swindon, UK.
Product overview
Westwire Harnessing is a leading solutions provider in the aerospace and defence sectors, offering a unified integrated manufacturing portfolio centred on high-reliability interconnection systems. The core offerings consist of EWIS (Electrical Wiring Interconnection Systems), electromechanical assemblies, box builds, and RF cables, which work together as an integrated service package from initial concept through full-scale production. The portfolio extends to speciality products including fibre optics and industrial rail systems. The company delivers complete design and manufacturing services for mission-critical harnesses, sub-system assemblies, and integrated subsystems serving land systems, aerospace, space, naval, and speciality product markets.
Differentiator
Problem solved
Functional benefit
Products and services
- EWIS (Electrical Wiring Interconnection Systems) Complex electrical wiring interconnection systems serving aerospace and defence platforms, including fighter aircraft, drones, military airlifters, defence helicopters and armoured vehicles.
- Electromechanical Assemblies Integrated electromechanical assemblies and box builds for mission-critical military and aerospace applications, delivering precision integration and sub-system assemblies.
- RF Cables Radio frequency cable solutions for aerospace, defence and industrial applications requiring high-reliability signal transmission.
- Fiber Optics Optical fibre connectivity solutions for specialty applications in aerospace, defence and space sectors.
- Industrial Rail Systems Specialty products for industrial rail systems, providing ruggedised harnesses and connectivity solutions for rail infrastructure.
- Mission-Critical Electrical Harnesses High-reliability electrical harnesses designed for military aircraft, drones, armoured vehicles, frigate systems and satellite systems.
Quantifiable outcome
- Doubled output targeted over next three years
Companies that use Westwire Harnessing
Customer profileNamed customers1 record
Segments4 records
Ideal customer profiles1 record
Westwire Harnessing technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Westwire Harnessing partnerships and signals
Strategic signalScale indicators5 records
Recent moves7 records
Expansion highlights5 records
Westwire Harnessing competitors and assessment
Company assessmentOthers
- SASMOS HET Technologies: Westwire's parent company, an India-based aerospace and defence EWIS and electromechanical assembly manufacturer. Most directly comparable in product mix but a corporate parent rather than independent peer, supplying Westwire with technology and process know-how.
Broad incumbents
- Molex (Koch Industries): Global electronic interconnect specialist with significant aerospace and defence harness and cable assembly exposure. Competes with Westwire on commercial and military aerospace interconnect programmes, though broader portfolio across automotive and data comm.
- TE Connectivity: Global leader in connectors and sensors with a large aerospace, defence and marine wiring harness and EWIS portfolio. Direct overlap with Westwire in military airframes, defence vehicles and naval EWIS, but at vastly larger scale and broader product range.
- Amphenol: Multi-national interconnect, antenna and sensor specialist serving military aerospace, defence electronics and harsh-environment applications. Overlaps with Westwire's EWIS, RF cable and ruggedised harness offerings across fighter and rotary-wing platforms.
Direct peers
- Latecoere: French aerospace supplier of electrical wiring interconnection systems, on-board connectivity and aerostructures serving major commercial and military aircraft OEMs. Direct EWIS peer competing on European aerospace platforms.
- Carlisle Interconnect Technologies: Specialist in aerospace and defence interconnect solutions including EWIS, RF/microwave cable assemblies and integrated harness solutions. Closest direct peer to Westwire, competing on the same fighter, UAV, helicopter and space platform programmes.
- Glenair: Manufacturer of mission-critical interconnect systems, including harsh-environment cable assemblies, EWIS and box builds for military aerospace and naval platforms. Direct competitor to Westwire in EWIS for defence and space applications.
- Radiall: French manufacturer of RF coaxial connectors, cable assemblies and EWIS for aerospace, defence and industrial markets. Direct overlap with Westwire's RF cable and harsh-environment interconnect product lines.
Regional players
- Pattonair (now Velocity Aerospace): UK-based aerospace and defence parts distributor and aftermarket supplier serving RAF and European platforms. Comparable UK regional aerospace defence exposure though focused on parts distribution rather than harness manufacturing.
Emerging players
- Turck duTec: UK-based specialist in complex electrical wiring harness and electromechanical assemblies for aerospace, defence and industrial sectors. Closest UK small-cap peer to Westwire by scale, geography and mission-critical harness focus.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
Westwire Harnessing social profiles
Digital presenceWestwire Harnessing compliance and trust
Trust signalCompliance6 records
Westwire Harnessing financial estimates
Financial estimateRevenue estimate
Valuation estimate
Westwire Harnessing leadership team
Management profileNumber of profiles
Profiles4 records
Westwire Harnessing funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Westwire Harnessing M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Westwire Harnessing
What does Westwire Harnessing do?
Westwire Harnessing designs and manufactures Electrical Wiring Interconnection Systems (EWIS), electromechanical assemblies, box builds, RF cables, and mission-critical electrical harnesses for aerospace and defence OEMs. The company also produces specialty products including fiber optics and ruggedized harnesses for industrial rail systems, delivering complete integrated manufacturing services from concept and prototyping through to full-scale production. Customers include top OEMs across aviation, defence, space, naval and industrial sectors, served from the company's 21,000+ sq ft facility in Swindon, UK.
Is Westwire Harnessing a public or private company?
Westwire Harnessing is a private company. It is classified as corporate owned and is currently operating.
When was Westwire Harnessing founded?
Westwire Harnessing was founded in 1987. It employs 11 to 50 people.
Where is Westwire Harnessing based?
Westwire Harnessing is headquartered in Swindon, United Kingdom, in the Europe region.
How does Westwire Harnessing make money?
One revenue line is on record: electrical Harness Manufacturing.
Who are Westwire Harnessing's main competitors?
SASMOS HET Technologies is listed as an others. Broad incumbents are Molex (Koch Industries), TE Connectivity and Amphenol. Direct peers are Latecoere, Carlisle Interconnect Technologies, Glenair and Radiall. Pattonair (now Velocity Aerospace) is listed as a regional player. Turck duTec is listed as an emerging player.
Does Westwire Harnessing have an API?
No public API is recorded for Westwire Harnessing.
What industry is Westwire Harnessing in?
Westwire Harnessing's product category is Aerospace & Defence Wiring Harnesses. Its primary akta.pro industry code is IMABANAD, Aerospace Electrical Wiring Interconnect Systems (EWIS) & Harnesses, with a secondary code of IMACAJAA, Vehicle Wiring Harnesses & Cable Assemblies Manufacturing. Its NAICS code is 33592 and its SIC code is 3600.