# Top 50 electronics and semiconductor companies in the United Kingdom
Tamtam tracks 178 electronics and semiconductor companies headquartered in the United Kingdom. This list ranks the 50 largest by number of employees on LinkedIn, led by BAE Systems, Nothing and Arm. Their median headcount is 524. Half of them were founded in 1977 or later. The most common headquarters are London (6), Cambridge (5) and Marlow (2).
These electronics and semiconductor companies in the United Kingdom represent a mix of established large groups and mid-sized firms. They are engaged in diverse activities, from defense and aerospace with BAE Systems, to consumer electronics with Nothing, and specialized semiconductor design with Arm. Other companies like Edwards Vacuum provide critical solutions for various industries.
The list reveals a concentration of companies in the broader London area and in Cambridge, highlighting these locations as key hubs for the sector. Companies such as Halma plc and TT Electronics plc focus on safety, environmental monitoring, and specialized electronics for industrial applications, while Renishaw specializes in precision measurement and additive manufacturing.
π¬π§ United Kingdom Β· 50 companies Β· Updated Nov 12, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [BAE Systems](https://www.tamtam.ai/c/bae-systems) (baesystems.com)
The company provides advanced technology-led defense, aerospace, and security solutions, with a skilled workforce in over 40 countries, focusing on innovation and long-term commitment | Defense and Space Manufacturing | π¬π§ London | 55,143 | 1999 |
| 2 | [Nothing](https://www.tamtam.ai/c/nothing-london) (nothing.tech)
London-based tech company building smartphones and audio equipment with iconic design and intuitive engineering as an alternative to established industry giants. | Technology, Information and Internet | π¬π§ London | 29,964 | 2020 |
| 3 | [Arm](https://www.tamtam.ai/c/arm) (arm.com)
Designing foundational computing technology enabling advancements in cloud, automotive, IoT, metaverse, and autonomous systems worldwide. | Semiconductor Manufacturing | π¬π§ Cambridge | 11,505 | |
| 4 | [Edwards Vacuum](https://www.tamtam.ai/c/edwards-vacuum) (edwardsvacuum.com)
A global leader in vacuum and abatement solutions for a wide range of industries, enabling innovation and manufacturing processes worldwide | Semiconductor Manufacturing | π¬π§ Burgess Hill | 4,477 | 1919 |
| 5 | [Halma plc](https://www.tamtam.ai/c/halma-plc) (halma.com)
Group of companies providing life-saving safety, environmental monitoring, and medical technologies to protect people, infrastructure, and improve healthcare quality. | Appliances, Electrical, and Electronics Manufacturing | π¬π§ Amersham | 3,875 | 1972 |
| 6 | [TT Electronics plc](https://www.tamtam.ai/c/tt-electronics-plc) (ttelectronics.com)
Engineering and manufacturing electronics for medical, automation, aerospace, and defense sectors to enhance safety, health, and sustainability globally. | Manufacturing | π¬π§ Woking | 3,059 | 1812 |
| 7 | [HBK - Hottinger Brüel & Kjær](https://www.tamtam.ai/c/hbk-hottinger-bruel-and-kjaer) (hbkworld.com)
Provides comprehensive testing and data analysis solutions in sound, vibration, reliability, durability, propulsion efficiency, and weighing to accelerate product development. | Industrial Machinery Manufacturing | π¬π§ London | 2,750 | 1942 |
| 8 | [Volex](https://www.tamtam.ai/c/volex) (volex.com)
Global manufacturing company, specializing in performance-critical applications, power products, cable assemblies, data center power, electric vehicle charging, and consumer electricals. | Appliances, Electrical, and Electronics Manufacturing | π¬π§ Basingstoke | 2,706 | 1919 |
| 9 | [Renishaw](https://www.tamtam.ai/c/renishaw) (renishaw.com)
Engineering and scientific technology company, specializing in precision measurement, healthcare solutions, and additive manufacturing for diverse global industries. | Automation Machinery Manufacturing | π¬π§ Wotton-under-Edge | 2,613 | 1973 |
| 10 | [Lucy Group Ltd](https://www.tamtam.ai/c/lucy-group-ltd) (lucygroup.com)
International group providing sustainable infrastructure, smart energy distribution, advanced street lighting controls, and responsible property development for eco-friendly living. | Appliances, Electrical, and Electronics Manufacturing | π¬π§ Oxford | 1,814 | 1812 |
| 11 | [CSR](https://www.tamtam.ai/c/csr) (csr.com)
Innovative technology company developing silicon, software, and services for consumer electronics, focusing on Voice & Music, Connectivity, Bluetooth, Automotive Infotainment, and Location solutions | Semiconductor Manufacturing | π¬π§ Cambridge | 1,796 | 1999 |
| 12 | [Oxford Instruments plc](https://www.tamtam.ai/c/oxford-instruments-plc) (oxinst.com)
Design and manufacture advanced tools and systems for research and industry to fabricate, analyze, and manipulate matter at atomic level. | Nanotechnology Research | π¬π§ High Wycombe | 1,773 | 1959 |
| 13 | [Dialog Semiconductor](https://www.tamtam.ai/c/dialog-semiconductor) (renesas.com)
Provides standard and custom integrated circuits for IoT and Industrial IoT applications, focusing on power efficiency and performance across various markets. | Renewable Energy Semiconductor Manufacturing | π¬π§ Reading | 1,500 | 1986 |
| 14 | [Sony Europe](https://www.tamtam.ai/c/sony-europe) (sony.com)
Leading entertainment, technology, and imaging solutions across Europe, focusing on AI, biotech, software, R&D, design, sales, and customer service. | Entertainment Providers | π¬π§ Weybridge | 1,368 | |
| 15 | [Oxford Nanopore Technologies](https://www.tamtam.ai/c/oxford-nanopore-technologies) (nanoporetech.com)
Innovative biotech company developing portable DNA and RNA sequencing technology for real-time data delivery and scalable analysis in over 100 countries worldwide | Biotechnology Research | π¬π§ Oxford | 1,352 | |
| 16 | [Smiths Interconnect](https://www.tamtam.ai/c/smiths-interconnect) (smithsinterconnect.com)
Design and manufacture of high-reliability electronic components, microwave, optical, and RF products for aerospace, defense, medical, semiconductor, and industrial markets. | Appliances, Electrical, and Electronics Manufacturing | π¬π§ London | 1,090 | |
| 17 | [Mitsubishi Electric Europe BV](https://www.tamtam.ai/c/mitsubishi-electric-europe-bv) (europe.mitsubishielectric.com)
Manufacture and sales of electrical and electronic products and systems for diverse applications, focusing on green technology contributions worldwide. | Appliances, Electrical, and Electronics Manufacturing | π¬π§ Uxbridge | 1,037 | 1969 |
| 18 | [Teledyne e2v](https://www.tamtam.ai/c/teledyne-e2v) (teledyne-e2v.com)
Develops advanced technology products, services, and solutions for diverse industries like medical, aerospace, and security, focusing on semiconductors, imaging, and radio frequency. | Semiconductor Manufacturing | π¬π§ Chelmsford | 1,030 | 1947 |
| 19 | [Imagination Technologies](https://www.tamtam.ai/c/imagination-technologies) (imaginationtech.com)
Engineering high-performance, power-efficient chip designs for electronic products, with a global presence and talent pool solving complex technology challenges | Semiconductor Manufacturing | π¬π§ Kings Langley | 752 | 1985 |
| 20 | [YAZAKI EUROPE LIMITED](https://www.tamtam.ai/c/yazaki-europe-limited) (yazaki-europe.com)
The company specializes in automotive wiring harnesses and energy equipment, focusing on creating products for a safe and environmentally friendly society | Motor Vehicle Manufacturing | π¬π§ Coventry | 744 | 1929 |
| 21 | [Samsung Electronics UK](https://www.tamtam.ai/c/samsung-electronics-uk) (samsung.com)
A global leader in diverse businesses spanning technology, semiconductors, construction, fashion, finance, and more, dedicated to innovation and global citizenship | Appliances, Electrical, and Electronics Manufacturing | π¬π§ Chertsey | 737 | |
| 22 | [Graphcore](https://www.tamtam.ai/c/graphcore) (graphcore.ai)
A company specializing in AI technology with a unique processor designed to accelerate machine learning models and drive breakthroughs in general machine intelligence | Semiconductor Manufacturing | π¬π§ Bristol | 697 | 2016 |
| 23 | [Teledyne Qioptiq](https://www.tamtam.ai/c/teledyne-qioptiq) (teledyne-ade.com)
Designs and manufactures photonic products and solutions for various industries, including medical, aerospace, and research, with expertise from multiple integrated companies | Defense and Space Manufacturing | π¬π§ St Asaph | 660 | |
| 24 | [Mini-Circuits](https://www.tamtam.ai/c/mini-circuits) (minicircuits.com)
A global leader in RF, microwave, and millimeter wave technology, providing components for communication networks, national security systems, and cutting-edge technologies | Appliances, Electrical, and Electronics Manufacturing | π¬π§ Brooklyn | 636 | 1968 |
| 25 | [Teknik](https://www.tamtam.ai/c/teknik) (teknikuk.com)
Contract Electronics Manufacturer specializing in Electrical and Electronic Sub-Assemblies, designing and building equipment to individual specifications with BS EN ISO9001 approval | Appliances, Electrical, and Electronics Manufacturing | π¬π§ Winterbourne | 524 | 1993 |
| 26 | [Huawei Technologies Research & Development (UK) Ltd](https://www.tamtam.ai/c/huawei-technologies-research-and-development-uk-ltd)
The company is a global leader in technology innovation and research, with a focus on driving development in the global innovation value chain | Telecommunications | π¬π§ Cambridge | 455 | 2017 |
| 27 | [MSS International Group](https://www.tamtam.ai/c/mss-international-group) (mssinternational.com)
Supply and manufacture of electrical transmission, distribution components, power storage units, and services supporting global energy transition and electrification. | Appliances, Electrical, and Electronics Manufacturing | π¬π§ | 440 | 1975 |
| 28 | [Cosworth](https://www.tamtam.ai/c/cosworth) (cosworth.com)
A global technology business redefining mobility solutions through propulsion, electronics, software for automotive, aerospace, marine sectors with focus on hybrid, EV, data connectivity, automation technology | Motor Vehicle Manufacturing | π¬π§ Northampton | 431 | 1958 |
| 29 | [IQE](https://www.tamtam.ai/c/iqe) (iqep.com)
Global supplier of advanced semiconductor wafers for leading chip manufacturers, offering a range of products and services for high-tech applications worldwide | Semiconductor Manufacturing | π¬π§ Cardiff | 420 | 1988 |
| 30 | [G&H (Gooch & Housego)](https://www.tamtam.ai/c/g-and-h-gooch-and-housego) (gandh.com)
A world leader in optical design, testing, and manufacturing, specializing in providing optical systems and components for demanding applications | Industrial Machinery Manufacturing | π¬π§ Ilminster | 411 | 1948 |
| 31 | [Worldmark](https://www.tamtam.ai/c/worldmark) (ccldesign.com)
Global manufacturer of labels, components, branding solutions, and security applications for electronics, automotive, and industrial sectors, part of CCL Industries | Printing Services | π¬π§ East Kilbride | 394 | 1979 |
| 32 | [Druck](https://www.tamtam.ai/c/druck) (druck.com)
Designs, develops, manufactures high-quality, accurate, reliable pressure sensing devices, instruments, software, and services for critical asset monitoring in challenging environments. | Measuring and Control Instrument Manufacturing | π¬π§ Leicester | 393 | 1972 |
| 33 | [Linksys](https://www.tamtam.ai/c/linksys) (linksys.com)
A leading provider of reliable and innovative wireless technologies for homes and businesses, delivering fast, secure, and user-friendly WiFi connections | Computer Networking Products | π¬π§ Milton Keynes | 392 | 1988 |
| 34 | [Astute Group](https://www.tamtam.ai/c/astute-group) (astutegroup.com)
Authorized electronics distribution and supply-chain management with global sourcing, technical support, anti-counterfeit testing, and obsolescence management for aerospace and defense. | Semiconductor Manufacturing | π¬π§ Stevenage | 386 | 1989 |
| 35 | [TSL](https://www.tamtam.ai/c/tsl) (tslproducts.com)
Specializing in innovative audio monitoring, control systems, and power management solutions for professionals in broadcast, media, aerospace, defense, and live events industries | Technology, Information and Media | π¬π§ Marlow | 385 | 1986 |
| 36 | [GCT](https://www.tamtam.ai/c/gct-welwyn-garden-city) (gct.co)
A global designer and manufacturer of interconnect products with support centers and production facilities in key regions, committed to customer support and cost-effective manufacturing | Appliances, Electrical, and Electronics Manufacturing | π¬π§ Welwyn Garden City | 373 | 1988 |
| 37 | [Nidec Control Techniques](https://www.tamtam.ai/c/nidec-control-techniques) (controltechniques.com)
Leading provider of variable speed drives & power conversion technology for commercial and industrial applications, enhancing productivity with innovative products for demanding applications | Automation Machinery Manufacturing | π¬π§ Newtown | 365 | 1973 |
| 38 | [Rebound Electronics](https://www.tamtam.ai/c/rebound-electronics) (reboundeu.com)
Hybrid Distribution company offering electronic components globally, combining franchised distribution with brokerage for best price, quality, and continuity of supply | Semiconductor Manufacturing | π¬π§ Newbury | 354 | 2003 |
| 39 | [Chelton](https://www.tamtam.ai/c/chelton) (chelton.com)
Specializing in communication and navigation systems for aerospace and defense, offering antennas, anti-jam GPS, and electronic warfare solutions for diverse terrain | Aviation and Aerospace Component Manufacturing | π¬π§ Marlow | 353 | 1947 |
| 40 | [Luceco Group](https://www.tamtam.ai/c/luceco-group) (luceco.com)
Manufacturing and distributing LED lighting products, EV chargers, wiring devices, circuit protection, portable power solutions, and audio-visual accessories for various global industries. | Appliances, Electrical, and Electronics Manufacturing | π¬π§ London | 351 | 1952 |
| 41 | [Gooch & Housego](https://www.tamtam.ai/c/gooch-and-housego) (goochandhousego.com)
World-leading manufacturer of precision optical components, light measurement instrumentation, and optical technologies with global sales, manufacturing, and prototyping capabilities | Mechanical Or Industrial Engineering | π¬π§ Ilminster | 333 | 1948 |
| 42 | [Pragmatic Semiconductor](https://www.tamtam.ai/c/pragmatic-semiconductor) (pragmaticsemi.com)
Development and production of flexible, sustainable semiconductors designed to accelerate innovation and positively impact people and the planet. | Semiconductor Manufacturing | π¬π§ Cambridge | 327 | 2010 |
| 43 | [acdc](https://www.tamtam.ai/c/acdc) (acdclighting.com)
Specialist LED lighting designers and manufacturers transforming the industry with innovative systems, collaborating with top designers on prestigious global projects Visit website for inspiration | Appliances, Electrical, and Electronics Manufacturing | π¬π§ Nelson | 320 | 2004 |
| 44 | [PST is now DwyerOmega](https://www.tamtam.ai/c/pst-is-now-dwyeromega) (processsensing.com)
Provider of instruments, analyzers, and sensors for precision measurements in various industries, ensuring product quality, compliance, and cost savings through innovative sensing technologies | Measuring and Control Instrument Manufacturing | π¬π§ Ely | 313 | 2016 |
| 45 | [Aion Silicon](https://www.tamtam.ai/c/aion-silicon) (aionsilicon.com)
Specializing in designing and manufacturing complex digital SoCs and ASICs, this global company offers innovative solutions with high quality and on-time delivery | Semiconductor Manufacturing | π¬π§ London | 249 | 2002 |
| 46 | [STI Limited](https://www.tamtam.ai/c/sti-limited) (sti-limited.com)
Specialist partner providing bespoke electronic design, manufacturing, R&D, supply-chain, and capital solutions for high-reliability industries globally. | Appliances, Electrical, and Electronics Manufacturing | π¬π§ Hook | 248 | 1989 |
| 47 | [Acal BFi](https://www.tamtam.ai/c/acal-bfi) (acalbfi.com)
A leading provider of advanced solutions for electronic applications, offering a comprehensive range of specialized products, engineering expertise, and in-house capabilities across Europe | Appliances, Electrical, and Electronics Manufacturing | π¬π§ Wokingham | 241 | |
| 48 | [QUALCOMM TECHNOLOGIES INTERNATIONAL, LTD.](https://www.tamtam.ai/c/qualcomm-technologies-international-ltd) (qualcomm.com)
Provider of cutting-edge technology solutions as part of a global group, specializing in advancing innovations in the field of QUALCOMM technologies | Appliances, Electrical, and Electronics Manufacturing | π¬π§ Cambridge | 240 | 1985 |
| 49 | [Filtronic](https://www.tamtam.ai/c/filtronic) (filtronic.com)
Develops and manufactures high-performance RF, microwave, and mmWave technologies for telecommunications, critical communications, aerospace, defense, and space industries. | Defense and Space Manufacturing | π¬π§ Sedgefield | 236 | 1977 |
| 50 | [Harwin](https://www.tamtam.ai/c/harwin) (harwin.com)
This company designs and manufactures high-reliability interconnect devices and PCB hardware, serving demanding sectors like aerospace, defense, automotive, and medical with a global presence. | Appliances, Electrical, and Electronics Manufacturing | π¬π§ Portsmouth | 228 | 1952 |
## How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.
## More company lists in the United Kingdom
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- [Multinational companies in the United Kingdom](https://www.tamtam.ai/l/multinational-companies-united-kingdom) (7,458)
- [Financial services firms in the United Kingdom](https://www.tamtam.ai/l/financial-services-firms-united-kingdom) (3,711)
- [Financial Services companies in the United Kingdom](https://www.tamtam.ai/l/financial-services-companies-united-kingdom) (3,696)
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- [Professional services firms in the United Kingdom](https://www.tamtam.ai/l/professional-services-firms-united-kingdom) (2,706)
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- [Distributors and wholesalers in the United Kingdom](https://www.tamtam.ai/l/distributors-and-wholesalers-united-kingdom) (1,060)
## The same list elsewhere in United Kingdom
- [Electronics and semiconductor companies in England](https://www.tamtam.ai/l/electronics-companies-england) (156)
## The same list elsewhere
- [Electronics and semiconductor companies in the world](https://www.tamtam.ai/l/electronics-companies-in-the-world) (3,685)
- [Electronics and semiconductor companies in Europe](https://www.tamtam.ai/l/electronics-companies-in-europe) (1,821)
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Source: https://www.tamtam.ai/l/electronics-companies-united-kingdom