Top Tech Companies in London (8,302)
International Schools Partnership (ISP) is a global group of private international schools serving K–12 students across more than 26 markets worldwide. It supports schools in becoming institutions of choice, promotes high standards of educational excellence, and develops future-ready learners. ISP’s shared approach combines academic achievement, international opportunities, enriched learning experiences, and strong connections to the local communities its schools serve...
The LMAX Group is the leading independent operator of institutional execution venues for FX and crypto currency trading. LMAX Group is unique in offering market access to all FX customer segments, transforming the world’s largest asset class to an open, transparent marketplace with fair, precise & consistent execution. LMAX Group services funds, banks, asset managers and retail brokerages in over 100...
Autolus is a CAR T cell therapy company. We are applying our extensive programming capabilities to develop advanced autologous T cell therapies that have the potential to deliver life-changing therapies to patients with cancer and autoimmune diseases.
Datasite the maker of Datasite Diligence virtual data room platform, helping dealmakers around the world close more deals faster.
DataSite's Top Stability & Growth Strengths
Strong Market Position & Advantage: Independent rankings, awards, broad client adoption, and high deal volume consistently position Datasite among top-tier VDR and deal-tech providers. Leadership placements and industry accolades reinforce frequent shortlist status across banks, PE, and corporates.
Investor Backing & Capital Strength: Significant PE support includes a large capital commitment in 2025 and funding for acquisitions such as Grata and SourceScrub, signaling ample resources for expansion. Such backing underpins continued investment in AI, product innovation, and platform scope.
Innovation-Driven Growth: Active investment in AI-assisted diligence, workflow automation, and extensions into private‑market intelligence demonstrate a product-forward growth agenda. Recognition such as M&A Technology of the Year and ISO 42001 certification supports ongoing innovation credibility.
Since 2004, Flow Traders has been a principal trading firm and one of the world’s largest liquidity providers, specialised in Exchange Traded Products (ETPs). Our headquarters in Amsterdam and offices in New York, Singapore, Hong Kong, Milan and Cluj accommodate more than 500 employees. Throughout the years, Flow Traders has received the industry’s recognition, winning numerous awards and has been...
World Wide Technology is a systems integrator, provides information technology and supply chain solutions. Fueled by creativity and ideation, World Wide Technology strives to accelerate our growth and nurture future innovation. From our world class culture, to our generous benefits, to developing cutting edge technology solutions, WWT constantly works towards its mission of creating a profitable growth company that is...
World Wide Technology's Top Stability & Growth Strengths
Strong Market Position & Advantage: Industry rankings and awards place WWT among top solution providers and large private tech firms, underscoring leadership in its segment. Scale indicators like more than $20 billion in revenue and Fortune/Time recognition reinforce durable standing.
Strategic Partnerships: Deep alliances with major vendors such as Cisco, Dell, HPE, Intel, Microsoft, NetApp, F5, Tanium, VMware and NVIDIA are evidenced by multiple Partner of the Year honors. These relationships expand influence across AI, networking, cloud and data platforms.
Innovation-Driven Growth: The Advanced Technology Center and AI Proving Ground, plus significant AI infrastructure investments and a partnership with Coder, highlight a lab‑led approach to next‑gen solutions. This capability to test and validate multivendor architectures supports adoption and differentiation.
Ofcom is the UK's communications regulator. We make sure people get the best from their home phone and mobile services, as well as keeping an eye on TV, radio and on-demand content. We also ensure people don’t get scammed and are protected from bad practice. We also oversee the universal postal service, and the airwaves used by wireless devices. Right...
PoloWorks provides business advisory and outsourced services to (re)insurers and brokers within the insurance lifecycle, operating in the Lloyd’s and companies markets.
Digital Turbine (NASDAQ: APPS) powers superior mobile consumer experiences and results for the world's leading telcos, advertisers, and publishers. Our end-to-end platform uniquely simplifies our partners' ability to supercharge their awareness, acquisition, and monetization — connecting them with more consumers, in more ways, across more devices. Digital Turbine is headquartered in North America, with offices around the world. For more...
Digital Turbine's Top Stability & Growth Strengths
Strategic Partnerships: Deep carrier and OEM integrations create a differentiated distribution channel for app discovery and preloads, reinforced by a broad global partner network and notable distribution arrangements. These relationships support continued product reach and help the company sidestep some app-store and privacy-related constraints.
Strong Revenue Growth: Recent fiscal 2026 quarters show consistent year-over-year revenue increases with raised full-year guidance, indicating renewed top-line momentum after earlier softness. Growth is described as coming from both On Device Solutions and the App Growth Platform, suggesting multiple contributors to the rebound.
Profitability: Profitability indicators improved meaningfully, with sharply higher non-GAAP adjusted EBITDA across recent quarters and a move to GAAP net income in the latest reported quarter. This pattern suggests improved operating leverage alongside the revenue recovery.
Our platform gives organizations a complete view of where their data lives, how it’s used, and how to keep it safe, so they can reduce risk and unlock the full value of their data, wherever it is. Backed by more than $1.7 billion in funding from top-tier investors including Accel, Blackstone, Coatue, Cyberstarts, Georgian, Lightspeed, and Sequoia, Cyera’s unified data...
Cyera's Top Stability & Growth Strengths
Strong Revenue Growth: Company-reported year-over-year acceleration and rapid expansion across large enterprises indicate outsized top-line momentum. Announcements highlight multi‑x annual growth and increasing traction with major accounts.
Investor Backing & Capital Strength: Successive large late‑stage rounds at sharply higher valuations and substantial total capital raised point to strong investor conviction and ample runway. Back‑to‑back financings within months underscore continued access to capital.
Market Expansion: Headcount and operating footprint have scaled quickly with teams and offices across multiple regions. Executive appointments and partner-led go‑to‑market moves signal preparation for broader geographic and segment expansion.
Integrity360 is one of Europe’s leading cyber security specialists operating from office locations in the UK, Ireland, Bulgaria and Sweden. The group provides a comprehensive range of professional, support and managed cyber security services that identify and assess, protect and prevent, detect and analyse and respond and recover cyber risks and threats. Working either independently or as an extension of...
A global leader in the manufacturing of lighting and rigging technology, ETC employs nearly 1400 people in 13 corporate offices around the world. ETC is proud of its industry reputation for unmatched technical and customer service, 24/7/365. And with a family of over 300 authorized service centers throughout the world, staffed by hundreds of certified technicians, customers are never far...
Electronic Theatre Controls's Top Stability & Growth Strengths
Strong Market Position & Advantage: ETC is widely characterized as a global leader and pioneer in professional theatrical and architectural lighting, with its control ecosystems often described as industry standards across venues worldwide. Adoption in prominent institutions and a broad installed base reinforce its advantage.
Product Line Growth: The portfolio has expanded from lighting-control consoles into fixtures, dimming and power systems, rigging, networking, architectural controls, software, and horticultural lighting. Recent acquisitions, including Pharos Architectural Controls and SixEye, further strengthen architectural and cloud-management capabilities.
Market Expansion: Operations have broadened internationally through additional offices, acquisitions, and the consolidation of multiple European entities under the ETC brand. A large global service network underpins reach across theatres, broadcast studios, theme parks, and other venues.
Clarity is the secure customer experience platform trusted by leading businesses. We bring together customer service, AI agents trained on your data, and Voice of the Customer to solve problems at the core. With Clarity, teams close the loop-not just tickets. Our customers include OpenAI, Booking.com, Saudi Electric, Tabby, Careem, and CALO.
Envoy’s workplace platform has redefined how companies welcome visitors, improve the onsite experience, book desks, and meeting rooms, manage deliveries, and access accurate and unified workplace data in 16,000 locations around the globe by designing products that solve common workplace problems. Envoy provides a simple way to manage your complex safety, security, and compliance needs across all your workplace locations—wherever you...
Envoy's Top Stability & Growth Strengths
Strong Market Position & Advantage: Envoy is broadly seen as a leader in visitor management, with consistent category recognition and widespread adoption across many workplaces. This positioning provides advantage when buyers prioritize front‑of‑house security and visitor workflows.
Product Line Growth: The platform has expanded from lobby sign‑in into desks/rooms, deliveries, emergency notifications, and workplace analytics. This breadth supports consolidation plays and deeper account expansion.
Strategic Partnerships: Deep integrations with access control and security ecosystems, along with co‑branded offerings, extend distribution and strengthen fit for security‑centric buyers. Partnerships with device and workplace technology vendors further embed the platform in enterprise stacks.
xAI's Top Stability & Growth Strengths
Investor Backing & Capital Strength: Funding is considered exceptionally strong, with rapid multi‑billion raises and a large valuation supporting continued scale-up. Feedback suggests substantial capital from major rounds and strategic investors underpins infrastructure expansion.
Strong Market Position & Advantage: xAI is often positioned among a small group at the frontier of generative AI, enabled by integration with X and rapid infrastructure scale. Feedback suggests access to a large distribution channel and ecosystem synergies enhance strategic reach.
Resilient & Sustainable Growth: Growth in users, infrastructure, and product distribution is described as rapid and ongoing. Feedback suggests expanding ARR and ecosystem integrations indicate momentum across multiple dimensions.
We are the industry experts delivering actionable maritime insight, data, and analytics trusted by 60,000 professionals across the globe to drive commercial advantage, evaluate risk, and support the efficient and lawful movement of seaborne trade. Our data is collected only from the most reputable partners and accurate sources, many of which are exclusive to us and our customers. Our advanced...
Validus Risk Management is an independent market risk advisory firm specialising in the management of currency, interest rate and commodity price risk. We help our clients navigate and manage financial risk with a hands-on advisory approach and award-winning technology solutions. Our systematic financial risk management methodology has been designed to increase risk transparency, create customised risk management solutions, and facilitate...
Phasecraft is the quantum algorithms company. We’re building the mathematical foundations for quantum computing applications that solve real-world problems. Our team brings together many of the world’s leading quantum scientists, including founders Toby Cubitt, Ashley Montanaro, and John Morton and quantum consultant Andrew Childs. In 2020 we completed a record £3.7m seed round for a quantum computing company in the UK, led...
At Markel, we believe in hard work, a zealous pursuit of excellence, and fairness in all our dealings. Markel Corporation (NYSE: MKL) is a global Fortune 500 company headquartered in Richmond, Virginia. We seek to be a leader in each of our pursuits, with insurance being our primary business. As a market leader for specialty insurance, reinsurance, and investment operations...
Markel's Top Stability & Growth Strengths
Strong Market Position & Advantage: Industry data places Markel among the top U.S. E&S writers, and platforms like State National (fronting) and Nephila (ILS) broaden access and relevance. A sharpened focus on wholesale E&S and programs underscores presence in core niches.
Investor Backing & Capital Strength: Financial strength ratings are affirmed at strong levels across agencies, supporting capacity for large and complex risks. Reported growth in shareholders’ equity further indicates resilience through market cycles.
Profitability: Insurance underwriting profit increased and the combined ratio improved in 2025, with additional improvement indicated in early 2026 on an adjusted basis. Adjusted operating income also rose alongside better underwriting performance.
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