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Top Tech Companies in London (8,305)

CTS (cts.co.uk)
Information Technology • Consulting
4 Offices
1,028 Employees
12 Benefits

CTS delivers IT services that transform the user experience and operational success of law firms and barristers’ chambers, both day-to-day and in the longer term. Unlike most IT companies, we’re experts in the highly regulated nature and distinctive culture of the legal sector and their users. Our knowledge of specialist applications and strong relationships with the leading legal software vendors means we...

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CTS (cts.co.uk)
Harbor (harborglobal)
Information Technology • Consulting
4 Offices
644 Employees
28 Benefits

Harbor is the preeminent provider of expert services across strategy, legal technology, operations, and intelligence. Our globally integrated team of 800 strategists, technologists, and specialists navigates alongside our clients – leading law firms, corporations, and their law departments – to provide essential resources and invaluable insights. Anchored in a rich heritage of deep knowledge, steadfast relationships, and mutual respect, our...

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Harbor (harborglobal)

Harbor (harborglobal)'s Top Stability & Growth Strengths

Investor Backing & Capital Strength: Investor support is evident through BayPine’s majority investment and continued deal activity, signaling access to capital and confidence in the platform’s scaling plan. Evidence indicates this backing has enabled multiple acquisitions and leadership build‑outs to accelerate growth.

Market Expansion: Geographic reach continues to widen via acquisitions across the UK, Europe, and APAC, alongside a larger Chicago headquarters move. Evidence indicates these bolt‑ons (e.g., Pinnacle, Ascertus, iTrain, CE Global Partners, Encoretech) have extended international delivery and presence.

Product Line Growth: New offerings such as Harbor Deploy for AI deployment and the Human Capital Management Advisory practice expand service breadth into adjacent, high‑demand areas. Research initiatives and benchmarking programs further deepen the solutions portfolio and market relevance.

Kanadevia Inova
Greentech • Energy • Industrial • Renewable Energy
27 Offices
3,500 Employees
Hiring Now

Kanadevia Inova is a global greentech leader specializing in Waste to Energy (WtE) and Renewable Gas (RG). It delivers turnkey systems that transform waste into valuable resources through cutting-edge technology, focusing on the energy transition and circular economy to create a future free of wasted waste.

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Kanadevia Inova

Kanadevia Inova's Top Stability & Growth Strengths

Strong Revenue Growth: Net sales and order intake at the parent group have risen to record levels, driven largely by large overseas waste-to-energy projects tied to Kanadevia Inova. The expanding order book signals robust commercial demand and a sizable pipeline.

Market Expansion: Acquisitions and project wins broaden geographic reach, including BioValue in the Netherlands, Matrix Power Services in North America, UK and Ireland biogas assets, and major EPC contracts in Rome, Casablanca, Minnesota, and Sicily. This widening footprint indicates deepening access to European and North American markets.

Strong Market Position & Advantage: The group is described as holding the largest global share of WtE processing capacity and maintains a large reference base, underpinning credibility in large-scale tenders. Securing multi-billion-dollar awards such as the Casablanca integrated WtE project reinforces competitive advantage.

Couchbase
Database
6 Offices
700 Employees
34 Benefits

Unlike other NoSQL databases, Couchbase provides an enterprise-class, multicloud to edge database that offers the robust capabilities required for business-critical applications on a highly scalable and available platform. Couchbase is built on open standards, combining the best of NoSQL with the power and familiarity of SQL, to simplify the transition from mainframe and relational databases.

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Couchbase
Pydantic
Software
London
13 Employees

bringing schema and sanity to your data

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Pydantic
Eneba
Gaming • Esports
3 Offices
210 Employees

Our story so far... Vytis and Zygis, co-founders of Eneba, are avid gamers themselves. Their story began in the early 2000s, sharing a dorm room. Students being students, they spent countless nights playing StarCraft, Lineage II, WarCraft, Heroes III, Command & Conquer, Civilization, FIFA, NBA, NukeZone, Counter-Strike, and Doom to name a few ;) And, actually, most of the early...

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Eneba
Nimax Theatres Limited
Events • News + Entertainment • Hospitality
London
239 Employees

Nimax Theatres is a theatre group that owns and operates six prestigious theatres in London's West End, along with @sohoplace. The company is dedicated to delivering exceptional live and in-venue experiences with creativity, care, and impact. Committed to putting audiences first, Nimax Theatres focuses on staging high-quality shows to packed houses and ensuring a fantastic audience experience within their beautiful...

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Nimax Theatres Limited
Travelzoo
Software • Travel
8 Offices
406 Employees
33 Benefits

We, Travelzoo®, are the club for travel enthusiasts. We reach 30 million travelers. Club Members receive Club Offers personally reviewed by our deal experts around the globe. We have our finger on the pulse of outstanding travel, entertainment, and lifestyle experiences. We work in partnership with thousands of top travel suppliers—our long-standing relationships give us access to irresistible deals.

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Travelzoo
Ampifire
AdTech • Marketing Tech
2 Offices
76 Employees

AmpiFire is the world’s first content amplification engine. If you have a website or any piece of content AmpiFire can advertise it across hundreds of authority sites automatically to drive you more traffic and sales. It does this seamlessly using a mix of AI, talented writers and software automation. It will create videos, slideshows, news articles, images, blogs and audio...

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Ampifire
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ARC Systems
Cloud • Information Technology
Basildon
50 Employees
Hiring Now

Arc Systems was incorporated in 1992 and is a privately owned limited company. Arc offers experience in IT Support, Managed Backup, Cloud Services and Internet Connectivity to over 300 clients predominately within the SME market. Arc Systems are an ISO 9001 certified company we ensure the highest quality of standards and industry best practice. In providing cost-effective solutions to its...

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ARC Systems
Lattice
HR Tech • Mobile • Productivity • Professional Services • Software
4 Offices
705 Employees
41 Benefits
Develop engaged and high-performing teams.

Lattice is a people management software for growing companies. With Lattice, it’s easy to launch 360 performance review cycles and engagement surveys, keep track of OKR/goals, gather real-time feedback, and encourage manager 1-on-1 meetings. Over 1,800 companies worldwide all use Lattice to run performance reviews and employee engagement surveys.

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Lattice

Lattice's Top Stability & Growth Strengths

Strong Market Position & Advantage: Public recognition and a large installed base position the HR platform as a leader in people management, with over 5,000 organizations and repeated industry accolades. References to well-known customers and category leadership reinforce durable competitive standing.

Investor Backing & Capital Strength: Funding milestones include a $175 million Series F that lifted valuation to $3 billion, indicating strong capital access. This backing supports continued product development and international expansion efforts.

Innovation-Driven Growth: An expanding AI-powered suite and new modules such as HRIS, payroll, and an AI agent indicate active product expansion. Product velocity around performance, engagement, and analytics aligns with modern HR needs and supports adoption.

Magnopus
Digital Media • Information Technology
3 Offices
217 Employees
15 Benefits Hiring Now

Experience Engineers uniting the physical & digital. Using #spatialcomputing, #AI, & #cloudtech, we imagine, create, & execute impactful immersive solutions. Located in the US and UK, we are empowered by an Academy Award-winning team of designers, artists, engineers, and "get it done"​ producers who bring a diverse body of experience and creative solutions to the field. Our unique focus on story and...

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Magnopus
Footium
Gaming
City of London
15 Employees

Building the future of Football

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Footium
Team Whistle
4 Offices
128 Employees
17 Benefits

Team Whistle – comprising Whistle, New Form, Vertical Networks and Tiny Horse – is a global media company that’s changing the sports and entertainment game. We create and distribute engaging content experiences for today’s audiences, always playing in the positive and resonating with what’s relatable. Our premium scripted, unscripted and interactive shows, podcasts, music and merchandise are available on the...

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Team Whistle
RDT
Information Technology • Professional Services • Industrial
12 Offices

RDT is a global engineering and technology-services company founded in Bilbao, Spain. It develops comprehensive engineering, information technology, and digital-transformation solutions for organizations across critical economic sectors. Its capabilities include industrial asset management, maintenance, energy efficiency, sensorics and photonics, electronics, computational simulation, BIM, design, and consulting. RDT positions itself as a strategic partner delivering agile, flexible, high-value, and innovative solutions.

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RDT
MedialakeAI
Artificial Intelligence • Cloud • Digital Media • Marketing Tech • Software • Business Intelligence
2 Offices
25 Employees
8 Benefits
The Media Intelligence Platform

Medialake is the leader in marketing intelligence, helping enterprise teams unify, manage, and optimize their digital assets. Our platform provides unmatched visibility, automated compliance, and actionable insights to drive smarter, data-driven decisions. Trusted by global Fortune 100 brands, we empower marketers to reduce waste, enhance efficiency, maximize ROI and build foundations for the future.

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MedialakeAI
Featurespace
Artificial Intelligence • Cybersecurity
3 Offices
400 Employees
19 Benefits

Featurespace™ is the world leader in Enterprise Financial Crime prevention for fraud and Anti-Money Laundering. Featurespace invented Adaptive Behavioral Analytics and created the ARIC™ platform, a real-time machine learning software that risk scores events in more than 180 countries to prevent fraud and financial crime.  ARIC™ Risk Hub uses advanced, explainable anomaly detection to enable financial institutions to automatically identify risk, catch new...

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Featurespace
Somaa Learning
Professional Services • Software • Consulting
London
11 Employees

Creating your learning ecosystem Somaa develops innovative, gamified and comprehensive learning and development solutions for organisations. We aim to simplify learning and development for HR teams by helping companies define goals, co-create learning projects and design impactful learning journeys for teams. [email protected] 01491 378 431 - We work with over 200 leading content providers to host their content in one...

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Somaa Learning
Zefr
Digital Media
6 Offices
200 Employees
6 Benefits
Zefr is helping power the age of responsible marketing by enabling transparent, content-level targeting and measurement.

Zefr is the leading data and technology company that enables responsible marketing for brands, agencies and platforms. The company leverages a patented AI and machine learning engine, called Cognition AI, to offer brands and agencies more accurate and transparent activation and measurement solutions on scaled video platforms.

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Zefr
Little Journey
Healthtech • Information Technology
2 Offices
50 Employees

Little Journey is a digital eSupport platform designed to psychologically prepare, support and inform children and families before, during and after healthcare interactions - both those occurring as part of a clinical trial and within routine care. Our mission is to support all children to better health. We believe that, through the provision of engaging, interactive and age-appropriate content, we...

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Little Journey

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