U.K. Tech Big Green Snowflakes

Gooch & Housego

Market Cap: UK£146.3m

Engages in the manufacture and sale of acousto-optics, electro-optics, fiber optics, and precision optics and systems in the United Kingdom, North America, Europe, the Asia Pacific, and internationally.

Croma Security Solutions Group

Market Cap: UK£9.6m

Provides security services in the United Kingdom.

Spectra Systems

Market Cap: UK£70.0m

Spectra Systems Corporation invents, develops, and sells integrated optical systems in the United States and internationally.

Touchstar

Market Cap: UK£6.0m

Designs, builds, and sells rugged mobile computing devices under the Touchstar brand in the United Kingdom, rest of Europe, and internationally.

M.T.I Wireless Edge

Market Cap: UK£32.8m

Designs, develops, manufactures, and markets antennas for the military and civilian sectors.

Solid State

Market Cap: UK£92.4m

Designs, manufactures, distributes and supplies electronic equipment in the United Kingdom, rest of Europe, Asia, North America, and Internationally.

Renishaw

Market Cap: UK£2.7b

An engineering and scientific technology company, designs, manufactures, distributes, sells, and services technological products and services, and analytical instruments and medical devices worldwide.

Filtronic

Market Cap: UK£307.7m

Designs, develops, manufactures, and sells radio frequency (RF) technology in the United Kingdom, Europe, the Americas, and internationally.

Synectics

Market Cap: UK£49.3m

Provides specialist video based electronic surveillance systems and technology for use in security applications, environments, and transport applications in the United Kingdom, rest of Europe, North America, the Middle East, Africa, and the Asia Pacific.

Calnex Solutions

Market Cap: UK£48.4m

Designs, produces, and markets test and measurement instrumentation and solutions for the telecoms and cloud computing industries in the Americas, North Asia, and internationally.

Strix Group

Market Cap: UK£82.1m

Designs, manufactures, and supplies kettle safety controls and other components worldwide.

Oxford Instruments

Market Cap: UK£1.0b

Oxford Instruments plc provide scientific technology products and services for academic and commercial organizations in the United Kingdom and internationally.

Thruvision Group

Market Cap: UK£5.1m

Engages in the development, manufacture, and sale of people security screening technology in the United Kingdom, Europe, the United States, the Middle East, Africa, Asia Pacific, and internationally.

Concurrent Technologies

Market Cap: UK£189.7m

Designs, develops, manufactures, and markets single board computers for system integrators and original equipment manufacturers.

Midwich Group

Market Cap: UK£187.0m

Distributes audio visual (AV) solutions to trade customers in the United Kingdom, Ireland, Europe, the Middle East, Africa, the Asia Pacific, and North America.

Quantum Base Holdings

Market Cap: UK£13.5m

Engages in the quantum science business.

Windar Photonics

Market Cap: UK£51.6m

Through its subsidiaries, develops light detection and ranging wind sensors, and related software suite for use on electricity generating wind turbines in Europe, China, the Americas, and rest of Asia.

Spectris

Market Cap: UK£4.1b

Provides precision measurement solutions.

Newmark Security

Market Cap: UK£10.8m

Designs, manufactures, and sells electronic and physical security systems in the United Kingdom, the United States, Belgium, Canada, the Netherlands, Mexico, the Middle East, Sweden, Switzerland, Ireland, and internationally.

Raspberry Pi Holdings

Market Cap: UK£742.2m

Designs and develops single-board computers, compute module, and semiconductors in the United Kingdom, Europe, the United States, Asia Pacific, and internationally.

Vianet Group

Market Cap: UK£19.3m

Provides smart, cloud-based, and Internet of Things solutions to the hospitality, unattended retail vending, and remote asset management sectors in the United Kingdom, the rest of Europe, the United States, and Canada.

Xaar

Market Cap: UK£100.4m

Designs, develops, manufactures, markets, and sells industrial printheads and print systems in Europe, the Middle East, Africa, Asia, and the Americas.

Northamber

Market Cap: UK£7.9m

Engages in the supply of computer hardware, computer printers and peripheral products, computer telephony products, and other electronic transmission equipment in the United Kingdom.

Light Science Technologies Holdings

Market Cap: UK£14.8m

Engages in the development and manufacture of electronic boards in the United Kingdom and Ireland.

Seeing Machines

Market Cap: UK£167.3m

Provides driver and occupant monitoring system technologies in Australia, North America, the Asia Pacific, Europe, and internationally.

Halma

Market Cap: UK£13.1b

Provides technology solutions in the safety, health, and environmental markets in the United States, Mainland Europe, the United Kingdom, the Asia Pacific, Africa, the Middle East, and internationally.

Westminster Group

Market Cap: UK£6.8m

A specialist security and services company, designs and supplies technology security solutions and services worldwide.

Vectron Systems

Market Cap: €113.9m

Provides POS systems, POS software, and digital and cloud based services worldwide.

Big Technologies

Market Cap: UK£211.2m

Engages in the development and delivery of remote monitoring technologies and services to the offender and remote personal monitoring industry under the Buddi brand name.

CAP-XX

Market Cap: UK£19.1m

Develops, manufactures, and sells supercapacitors in the Asia Pacific, Europe, and the Americas.

TT Electronics

Market Cap: UK£169.5m

Provides design-led advanced electronics technologies for performance critical applications in the healthcare, aerospace and defense, and automation and electrification markets in the United Kingdom, Rest of Europe, North America, Asia, and internationally.

Aferian

Market Cap: UK£1.9m

Operates as a B2B video streaming solutions company in the United States, Latin America, the Netherlands, Europe, the Middle East, Africa, and internationally.

SRT Marine Systems

Market Cap: UK£174.6m

Develops and supplies automatic identification system (AIS) based maritime domain awareness technologies, products, and systems.

PipeHawk

Market Cap: UK£562.8k

Engages in the development, assembly, and sale of automated manufacturing units, test system, rail industry solutions, and ground probing radar (GPR) equipment in the United Kingdom, Europe and internationally.

Ethernity Networks

Market Cap: UK£805.8k

A technology solutions provider, develops and delivers data processing technology and solutions for applications in telecommunications, mobile, security, and data center markets in Israel and the United States.

Ondo InsurTech

Market Cap: UK£41.6m

Provides domestic leak detection services and technology in the United Kingdom, Nordics, and the United States.