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Top Tech Companies in London (7,384)

Duo Security
Cloud • Information Technology • Machine Learning • Security • Software • Cybersecurity • Data Privacy
4 Offices
1,000 Employees
42 Benefits
Our mission is simple: democratize security by making it easy and effective for everyone to use.

Duo Security, now part of Cisco, is the leading multi-factor authentication (MFA) and secure access provider. Duo is built on the promise of doing the right thing for our customers and each other. This promise is as central to our business as the product itself. Our four guiding principles are the heart of this sensibility: Easy, Effective, Trustworthy, Enduring We’re transforming...

Duo Security

Duo Security's Top Stability & Growth Strengths

Product Line Growth: Expanded product breadth beyond traditional MFA into IAM, including phishing-resistant MFA, SSO, passwordless authentication, and identity intelligence.

Resilient & Sustainable Growth: Rising authentication volumes at large scale are presented as an adoption proxy, and Cisco notes Duo is helping offset declines elsewhere in the portfolio.

Strong Brand Reputation: Repeat external recognition and broad positioning as a leader in user authentication support a strong standing in its core category.

Chucklefish
London
18 Employees

Chucklefish is an independent games development studio based in the UK, dedicated to producing charming, innovative and polished gaming experiences. We are currently working on two projects: Wargroove - a turn-based strategy game for all platforms & the magical Witchbrook! We have developed and published Starbound - an extraordinary extraterrestrial sandbox adventure game. It has now sold 3.5 million copies. Chucklefish also offers...

Chucklefish
SingleTrack
Financial Services
London
80 Employees

Singletrack Sell Side helps banks, brokers and IRPs leverage their research, sales and corporate assets to maximum advantage in an increasingly competitive marketplace. Proven in use by brokers, investment banks and independent research providers, Singletrack Sell Side enables firms to keep resources focused on the most profitable clients. Its powerful capital markets CRM functionality manages the client contact process and...

SingleTrack
Alida
Software
10 Offices
447 Employees
24 Benefits

Alida believes in a world where customers are respected as the ultimate source of truth. Because knowing the whole truth about your customers—even the parts that are hard to hear—can help companies make better decisions that drive long-term customer loyalty and growth. With the Alida Total Experience Management (TXM) Platform, leading brands like HBOMax, Adobe, Red Bull, and J.Crew turn...

Alida
Canada Goose
Fashion • Retail
4 Offices
1,584 Employees
4 Benefits

Canada Goose isn’t like anything else. We’ve built something great, something special – an iconic brand with an inspirational and authentic history. Our standards are high. Our focus is intense. Our culture is strong. We require and reward the initiative takers, the creative thinkers, the doers. We respect, trust and collaborate with each other, no matter what your title is. What you...

Canada Goose
Gateway Ticketing Systems
3 Offices
114 Employees
20 Benefits

For over 30 years, Gateway Ticketing Systems has worked with the world's top theme parks, zoos, aquariums, museums & other attractions all over the world. These locations have trusted our Galaxy® software for ticketing, admission control, group sales, membership/season pass and CRM solutions to drive revenue and increase efficiencies throughout their attraction by having a unified solution.

Gateway Ticketing Systems
TUI
Travel
19 Offices
32,508 Employees
15 Benefits

We’re adventure seekers. Smile givers. Impact makers. We believe in the power of travel. It broadens horizons for our customers, and for our people too. New places to live, new roles to explore, new communities to join. It’s yours for the taking. We’re TUI, a leading global travel and leisure experience company that makes holiday dreams come true for people around...

TUI
Zayo
Cloud • Enterprise Web • Information Technology • Other
21 Offices
4,000 Employees
26 Benefits
We Connect What's Next

Zayo Group Holdings, Inc. is a leading global communications infrastructure platform, delivering a range of solutions, including fiber & transport, packet and managed edge services. Zayo owns and operates a Tier 1 IP backbone spanning 134,000 miles across North America and Europe. By providing this mission-critical bandwidth to its category-leading customers across the wireless, hyperscale, media, tech and finance industries,...

Zayo

Zayo's Top Stability & Growth Strengths

Strong Market Position & Advantage: Consistent top-tier placement in U.S. Wavelength Services (No. 2) alongside operation of a Tier 1 global IP backbone and one of the largest North American fiber footprints signals meaningful competitive strength. Recognitions and independent confirmations of its network scale and interconnection depth underscore an advantaged position serving hyperscalers, carriers, and large enterprises.

Market Expansion: The May 1, 2026 close of Crown Castle’s Fiber Solutions business added roughly 90,000 metro route miles and 40,000+ on‑net locations, materially enlarging reach to about 224,000 North American route miles. Parallel long‑haul build programs exceeding 15,000 route miles and new AI‑corridor routes further extend geographic coverage and data‑center connectivity.

Future-Ready Strategy: Network modernization to 400G-class capabilities (with 800G‑ready plans) and purpose-built AI corridors aligns capacity with fast-growing AI and cloud demand. An anchor customer commitment and expanded data‑center on‑ramps indicate proactive positioning for next‑wave bandwidth needs.

Adecco
Professional Services
30 Offices
112,000 Employees
38 Benefits

Perfect placements. Speedy staffing. Tenacious testing. Who’s Adecco, we hear you ask? Only the top provider of first-class HR solutions. Our consultants work with some of the best, and most exciting, companies all over the world. We equip our clients with priceless industry insight and put everything we’ve got into training and mentoring our candidates. We’re here to match talented...

Adecco
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CQ Medical
Healthtech • Manufacturing
7 Offices
137 Employees
39 Benefits

CQ Medical is the global leader in patient radiotherapy positioning and healthcare innovations that advance human care. Our products uniquely combine medical technology with empathy for the patient. To our way of thinking, that’s the better way to achieve better outcomes.

CQ Medical
SmartRecruiters
HR Tech • Software
6 Offices
579 Employees
29 Benefits

SmartRecruiters’ Talent Acquisition Suite is used by high-performance organizations for making the best hires. It has full functionality for recruitment marketing and collaborative hiring built on a modern cloud platform with an open marketplace for 3rd party recruitment services. Unlike the first generation applicant tracking systems it replaces, SmartRecruiters provides an amazing candidate experience, hiring managers actually want to use...

SmartRecruiters
Sikoia
Fintech • Software • Automation
London
20 Employees

Sikoia is on a mission to revolutionise the way businesses handle customer data. Our Unified Data Platform (UDP) and orchestration layer seamlessly integrate disparate sources and systems to automate compliance and risk processes, such as customer onboarding and verification. The Sikoia Portal provides a fully-enriched, 360° view of the customer, enabling client engagement and risk operations teams to make faster and...

Sikoia
Kumon North America, Inc.
32 Offices
5,743 Employees
22 Benefits

Kumon is the world’s largest after-school math and reading enrichment program that has enrolled over 16 million children since its inception over 60 years ago. Founded by Toru Kumon, a high school math teacher who set out to create study aids in order to help his son excel academically, the program works to increase self-learning, confidence, and overall academic independence...

Kumon North America, Inc.
Callsign
Cybersecurity • Data Privacy
3 Offices
241 Employees
7 Benefits

Callsign is pioneering digital trust through proprietary technology that uniquely mimics the way humans identify each other in the real world. Positive identification of genuine users delivers privacy, safety and minimal friction whilst ensuring that bad actors are blocked. Through a simple Swipe or Type, users can be personally recognized to a 99.999% accuracy, delivering the highest fidelity AI based...

Callsign
Emperia
eCommerce • Marketing Tech • Retail • Software
London
47 Employees

The Emperia platform powers the creation and management of immersive virtual experiences for brands across multiple retail sectors. The platform marries the reach and accessibility of e-commerce with the impact of physical customer service shopping experience, while leveraging the unique traits of the virtual space; adding a layer of customer engagement, personalization, data monitoring and omnichannel cohesion. London and New...

Emperia
BNY Mellon
Fintech • Information Technology • Financial Services • Cybersecurity
28 Offices
48,400 Employees
46 Benefits

BNY Mellon is a global financial services company operating at the intersection of technology and finance, aiming to support, stabilize, and propel the world economy.

BNY Mellon

BNY Mellon's Top Stability & Growth Strengths

Strong Market Position & Advantage: Industry and company disclosures indicate BNY sits at or near the top globally in AUC/A, with additional leadership via Pershing in U.S. clearing and strengths in issuer/agency services. This scale positions the firm as core market infrastructure.

Strong Revenue Growth: Recent results show record revenue with double‑digit year‑over‑year growth and sharply higher EPS. Management highlights broad‑based momentum across Securities Services and Market & Wealth Services.

Innovation-Driven Growth: The firm is investing in platform and AI initiatives and launching new offerings and partnerships, including a digital‑asset custody collaboration. These moves aim to expand capabilities and drive operating leverage.

Warp Records
London
92 Employees

For over 30 years, Warp has been a synonym for adventures in sound and vision. We are now a leading independent music company representing ground-breaking and influential artists, including Aphex Twin, Flying Lotus, Danny Brown, Kelela, Nightmares on Wax, Squid, Oneohtrix Point Never, Nala Sinephro, Autechre, Stereolab and many more across our family of labels, which includes Warp Records, LuckyMe,...

Warp Records
TradAir
Fintech • Payments • Financial Services
London
23 Employees

TradAir: The nexus of the FX and cryptro trading system. We are the leading solution for institutional FX and crypto trading for banks and brokers. Access FX, CFD and crypto liquidity, create prices dynamically and stream them to venues and customers via a rich GUI interface, mobile and API. Tradair’s unique technology allows you to increase your profitability by optimizing...

TradAir
Protiviti
Business Intelligence • Consulting
3 Offices
39 Benefits

Protiviti (www.protiviti.com) is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the future. Protiviti and its independent and locally owned member firms provide clients with consulting and managed solutions in finance, technology, operations, data, digital, legal, HR, risk and internal audit through a network of more than...

Protiviti

Protiviti's Top Stability & Growth Strengths

Strong Market Position & Advantage: In internal audit and risk/compliance, the firm is broadly regarded as a leader with high visibility and repeated third‑party recognition. Independent profiles and rankings consistently frame it as a specialist front‑runner in these niches even if smaller overall.

Strategic Partnerships: Recent alliances and recognitions in AI and related ecosystems expand solution reach in higher‑growth areas (e.g., AI‑enabled internal audit and controls). These moves indicate active investment to accelerate delivery across risk, governance, and tech‑enabled services.

Strong Hiring & Retention: Sustained placement on major “Best Companies to Work For” lists points to strong talent attraction and retention. This continuity supports consistent delivery on multi‑year internal audit and risk programs.

Comma
Fintech • Payments • Financial Services
London
12 Employees

Bulk pay the boring stuff! Comma lives on as an embedded finance solution from Weavr.io.

Comma

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