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Hampshire

UK electronics manufacturers and PCB assemblers based in Hampshire.

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STS Defence Ltd

STS Defence Ltd is a UK-based engineering and technology company in Gosport, Hampshire, part of the international Cicor Group, specialising in mission-critical secure communications, electronic warfare and control and instrumentation systems for the naval and air defence markets. The company offers full design services spanning electronic, electro-mechanical, software and systems engineering, alongside UK-based manufacturing: three SMT lines plus conventional through-hole assembly, aerospace wiring looms and subsea cable and connector solutions, sheet-metal fabrication, and box build through to sub-system integration. Testing spans AOI, X-ray inspection and environmental stress screening, and the company also provides integrated logistic support, installation and training services to the Ministry of Defence.

May & Scofield

May & Scofield provides electronic product design and contract manufacturing from its Basingstoke facility, serving the automotive, military and defence, aerospace and rail sectors. The company is IATF 16949 and ISO 14001 certified, and its services span electronics, PCB, software, firmware and mechanical design through to PCB and mechanical assembly, enclosures, cable and loom manufacture, and final assembly and test. It reports over 150 years of combined in-house engineering experience and the capacity to place over one million PCB components per day.

PM Electronics UK Ltd

PM Electronics UK provides hand assembly of surface-mount and through-hole printed circuit boards from Sandown on the Isle of Wight, alongside cable and wiring harness manufacture, panel wiring and box build. Conformal coating is applied by dipping, spraying or brushing to suit the product, using lead-free solder and water-based coatings. The company holds ISO 9001:2015 certification, with annual external audits and an internal quality management system. Established in 2009, the company takes on both large and small order volumes with a personalised service, including collection and delivery across the island.

Integrated Electronics Ltd

Integrated Electronics, trading as IEL, provides contract electronics manufacturing, sub-assembly and design services from Farnborough, Hampshire, with manufacturing accredited to ISO 9001:2015. Production spans SMD and through-hole PCB assembly, cable and wound-component assembly, and electro-mechanical box build and system integration, backed by in-circuit and functional test. Alongside contract work the company produces its own branded product lines, including hydraulic proportional control systems and histology equipment, giving it in-house experience of taking designs through to finished product. Established in 1961, it now incorporates JIS Electronics following a merger.

Spinnaker Electronic Assembly Ltd

Spinnaker Electronic Assembly, trading as SEA Ltd, provides surface-mount, through-hole and mixed-technology PCB assembly from Trafalgar Wharf in Portsmouth, covering prototype, fast-turn and low-to-medium volume work with design, box-build and functional testing. The company runs three automatic pick-and-place lines handling BGA, micro-BGA, QFP, LGA and QFN packages, and sources rigid and metal-clad boards, including FR4, polyimide, PTFE and Rogers Duroid materials, through UK and offshore fabrication partners, on either a turnkey or customer-free-issue basis. Established in 2009, it serves defence, aerospace, automotive, marine, lighting and industrial customers, with its three partners bringing more than 90 years' combined contract manufacturing and production experience.

Wavemar Electronics Ltd

Wavemar Electronics provides surface-mount and through-hole PCB assembly, box build, cable assembly and product test from its Hamble site near Southampton. The company holds ISO 9001:2015 certification, builds to IPC-A-610 and RoHS standards, and handles BGA, micro-BGA and QFN packages across rigid, flexible and aluminium metal-based boards, single and double-sided, with in-house AOI and functional testing. Established in 1996, it serves marine, medical, industrial, automotive, defence, telecoms and lighting customers, sourcing components through worldwide supplier alliances and offering obsolescence management, electro-mechanical assembly, and repair and rework support from prototype through to high-volume production.

Emolice

Emolice provides contract electronics manufacturing from Basingstoke alongside its distribution business for automation brands including Temposonics, POSITAL, ELGO, Unitronics and Servotronix. Its Contract Manufacturing Solutions arm covers turnkey PCB assembly, cable and wire harness assembly, box build and electro-mechanical assembly, with PLC programming and mechanical assembly also offered. Technicians are certified to IPC/WHMA-A-620 under an ISO 9001 quality system, and the company supports industrial customers at low-to-medium production volumes on a full-supply turnkey basis.

Contour Electronics Ltd

Contour Electronics designs and manufactures bespoke interconnect systems, cable assemblies and wiring harnesses, box builds and integrated systems from Hook, Hampshire, as part of the discoverIE Group. Its work includes flexible circuit integration, power and battery integration, and vehicle and asset-monitoring hardware, supporting customers from concept through to production at volumes from prototype to high volume. The company is certified to ISO 9001:2015, ISO 14001, AS9100, UL and IPC/WHMA-A-620, holds JOSCAR accreditation for the defence and aerospace supply chain, and serves aerospace, medical, industrial, energy, telecoms, automotive and rail applications.

BVM Ltd

BVM is an embedded-computing systems integrator and industrial-PC OEM/ODM based in Swanmore, Hampshire, designing carrier boards, chassis, panel PCs, ruggedised Peli Case PCs and DIN-rail computers. Alongside design and build-to-order manufacturing using surface-mount and through-hole assembly with automated optical inspection, it distributes industrial motherboards, embedded single-board computers and displays, and provides OS configuration and image deployment for Windows IoT, Linux and Android systems. ISO 9001:2015 and ATEX certified, the company runs burn-in, environmental and thermal-aging testing and supports industrial, medical, aerospace, marine, rail, telecom, automotive and commercial customers from prototype to medium-volume production.

Season Electronics Ltd

Season Electronics Ltd is an AS9100D and ISO 9001:2015 certified contract manufacturer in Havant, Hampshire, operating as the UK manufacturing site of the Season Group. The site carries out surface-mount and through-hole PCB assembly on a turn-key basis, including BGA rework, alongside electromechanical assembly, box build system integration, cable and harness assembly, and direct-ship packaging, backed by X-ray, automated optical and functional inspection. It employs between 51 and 200 people, supports low- and medium-volume, early-stage manufacturing engagements, and supplies aerospace, defence and industrial customers.

Electrogear (Fareham) Ltd

Electrogear (Fareham) Ltd, ISO 9001:2015 certified, manufactures cable looms, wiring harnesses, RF and data cables, and box, panel and rack build assemblies from its Fareham, Hampshire site, working across military and commercial electrical and electromechanical projects. The company offers design for manufacture, proof-of-concept and first-off prototype builds, systems integration, test and commissioning support, and obsolescence management, repair and calibration for legacy equipment. Electrogear has traded since 2021 and serves aerospace and defence, maritime and subsea, rail, energy, communications and automotive customers.

Salmon Electrical Engineering Ltd

Salmon Electrical Engineering Ltd designs, manufactures and installs custom wiring harness systems from Royal Clarence Yard in Gosport, Hampshire, for motorsport, marine and automotive applications, including EV and hybrid vehicle projects. Its Raychem System 25 harnesses, often with mil-spec connectors, are visually inspected, retention tested and electrically tested on a Cirris tester, and the company also builds control enclosures and HMI controllers, wires driver-in-the-loop simulator rigs, and provides on-site installation, commissioning and fault-finding support. Salmon Electrical handles low-volume production runs and has traded since 2022, with prior contracting experience in civil and military aviation.

Hampshire has 31 companies listed on EMS Directory UK. Services on file include Box Build Assembly (28), PCB Assembly (28), Design & Engineering (27) and Cable & Wire Assembly (23). Customers span Industrial (24), Aerospace and Defence (20) and Automotive (19). The most common certifications are ISO 9001 (26), IPC A-610 (10) and AS9100 (8). Test and inspection methods listed include AOI (20), functional testing (17) and X-ray inspection (13). Of the 31, 21 take prototype orders and 9 list high-volume production. Company founding dates range from 1919 (Volex PLC) to 2022 (Salmon Electrical Engineering Ltd). Use the filters on this page to narrow by certification, testing, industries and order volume, then shortlist companies and send one enquiry to all of them. Our certification and capability checklist sets out what to ask before you commit. See also England.

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