Top Security Companies in London (149)

Strong Revenue Growth: Revenue is accelerating, with early‑2026 results exceeding the prior year’s pace and the full‑year outlook raised to reflect continued momentum. Large‑customer additions further reinforce top‑line expansion at scale.

Healthy Cash Flow: Operating and free cash flow remain substantial, including strong generation in Q2 2026 and across FY2025. This liquidity provides flexibility to invest while sustaining growth.

Innovation-Driven Growth: New AI‑powered capabilities—such as Bits AI offerings, GPU Monitoring, and an agent builder—were launched around Q1–Q2 2026 and at DASH 2026, supporting usage and upsell. Broader multi‑product adoption and growth in high‑ARR cohorts are highlighted across recent updates.

Strong Revenue Growth: Reported consecutive years of strong year-over-year revenue growth through 2022 and was included on Deloitte’s Technology Fast 500 for rapid multi‑year expansion. Financial press in February 2026 also cited more than $100 million in revenue alongside a potential sale valuing the company above $1 billion.

Market Expansion: The company notes serving 3,500+ organizations across 150+ countries and expanded its European presence with a London office to support international demand. Customer count progressed from “more than 3,000” earlier in the period to “more than 3,500,” indicating continued scaling.

Innovation-Driven Growth: New AI‑powered capabilities and analytics launched in 2025–2026, plus the acquisition of Pyrra to deepen social intelligence, signal ongoing product investment. Leadership additions, including the first President and Chief AI Officer in May 2026, were positioned as supporting continued growth and innovation.

Strong Revenue Growth: Revenue is rising rapidly, with Q2 FY2026 results well above the prior year and management increasing the full‑year outlook while guiding continued momentum into Q3. These signals indicate sustained top‑line acceleration rather than a one‑off spike.

Resilient & Sustainable Growth: Contracted demand expanded, as current remaining performance obligations grew strongly in Q2 FY2026. Upmarket customer gains and elevated net retention further point to durable expansion from existing cohorts.

Innovation-Driven Growth: An AI/edge “inference layer” launch and ongoing Workers AI/Radar updates show active platform expansion and growing developer adoption. This product velocity positions the business to capture emerging AI‑driven workloads.

Strong Revenue Growth: Revenue is rising briskly, with the latest quarter up year over year and full‑year FY2026 guidance raised for both revenue and ARR. Prior billings and deferred revenue growth indicate healthy demand heading into FY2026.

Strong Market Position & Advantage: Independent analyst evaluations place the company as a leader in SSE/SASE and note frequent inclusion on enterprise shortlists. A broad global footprint and regulatory certifications bolster competitiveness in regulated and international markets.

Product Line Growth: Expansion in newer offerings—such as Data Security, AI‑focused modules, and Zero Trust Branch—shows meaningful traction. Metered, non‑seat‑based solutions accounted for a sizable share of new ACV, suggesting broader monetization beyond core seats.

Strong Market Position & Advantage: Industry recognitions place the company in the Leaders tier across key AppSec categories, signaling durable competitive standing. Ongoing ecosystem visibility, such as a 2025 Google Cloud Technology Partner of the Year award, reinforces presence with major platforms.

Product Line Growth: The platform has broadened via acquisitions like Helios and Probely to add visibility, DAST, and API security alongside SCA/SAST. Momentum in newer modules, including Snyk Code surpassing about $100M in ARR and launches like Evo, supports larger account expansion and upsell.

Innovation-Driven Growth: The company is leaning into AI-native security with investments and acquisitions (e.g., Invariant Labs) and AI-assisted workflows. AI-forward offerings and product announcements indicate a roadmap aligned to modern development patterns.

Market Expansion: In 2025–2026, network-level call protection and branded calling launched or expanded with Vodafone UK, O2 Telefónica (Germany), MasOrange (Spain), Telenor Sweden, DNA Finland, and Bouygues Telecom (France). These integrations broaden addressable users and strengthen enterprise demand across multiple European markets.

Strategic Partnerships: Hiya’s technology is embedded with top OEMs and carriers, including Samsung Smart Call and AT&T’s ActiveArmor ecosystem. Such deep, default distribution creates defensible network effects as new capabilities like scam/spam detection, branded caller ID, and AI voice/deepfake detection roll out.

Strong Market Position & Advantage: Company materials cite a platform serving 500M+ users across 40+ countries and 221B calls observed in 2023. This operating scale underpins detection efficacy and makes the platform attractive to large operators and enterprises.

Strong Revenue Growth: Revenue is reported to have grown 26% in FY2024, alongside roughly 30% ARR growth in 2023 after surpassing the $100M milestone in 2022. This indicates sustained top-line expansion across consecutive years.

Profitability: The company reports remaining profitable and cash‑flow positive while growing in FY2024. This suggests operational discipline alongside expansion.

Investor Backing & Capital Strength: A July 2024 majority investment led by Vista Equity Partners valued the company at about $1.2B, with participation from TCV and KKR. This financing signals external confidence and provides resources for further expansion.

Strong Revenue Growth: Top line is described as expanding steadily in recent years, with continued growth expected. Separate reporting cites roughly $500 million in annual revenue and rapid momentum, even as exact figures vary.

Healthy Cash Flow: Cash generation has improved enough for a late‑2025 credit rating upgrade, with projections to produce over $100 million in free cash flow within the next 12–24 months. Leverage is expected to trend down alongside strong margins.

Customer Loyalty & Retention: Retention is characterized as consistently high with net expansion of spend, signaling durable relationships and effective cross‑sell within the installed base. A sizable customer count (over 4,000 organizations) supports stickiness across regions.

Strong Revenue Growth: Revenue momentum is highlighted by nearly 50% year-over-year ARR growth from large enterprise customers in 2025. Repeat inclusion on the Inc. 5000 (2026) and Deloitte Technology Fast 500 (2024/2025) underscores sustained multi-year expansion.

Strong Market Position & Advantage: Competitive standing is reinforced by a Leader placement in Forrester’s Third-Party Risk Management Wave (Q1 2026) and consecutive G2 “Leader” badges into Summer 2026. These signals indicate solid traction with buyers in an active GRC/TPRM market.

Innovation-Driven Growth: Product velocity is evident in the Spring 2026 release of AI-powered workflow agents and new integrations aimed at enterprise use cases. Governance-oriented moves such as appointing a new CISO in May 2026 align with scaling an enterprise-grade, security-focused roadmap.

Product Line Growth: Recent launches tied to AI-era development—such as Sonar Vortex, the SonarQube Remediation Agent, a unified SonarQube CLI, and expanded code‑security capabilities—signal an actively expanding product suite. The acquisition of Gitar adds AI‑native code review to the platform, indicating continued investment and category reach.

Market Expansion: Expansion moves include establishing a regional headquarters in Singapore and positioning the platform as an independent verifier layer across AI models and common SDLC tools. Marquee adopters and broad Fortune 100 penetration suggest reach across industries and geographies.

Strong Market Position & Advantage: Scale indicators such as 7M+ developers across 400k+ organizations, ‘750B+ lines of code analyzed daily,’ and logos like Nvidia, AstraZeneca, and Ford point to an entrenched position. Headcount rising from roughly 700 (2023) to about 1,000 (2026, estimate) further supports operational capacity at scale.

Strong Market Position & Advantage: Cubic is repeatedly characterized as a leader in large-scale transit fare collection and as the de facto standard in live air-combat training instrumentation, supported by marquee deployments (e.g., OMNY, Ventra, Opal) and widespread P5CTS fielding. Sole‑source upgrades and longstanding roles on flagship systems reinforce durable competitive advantages in its two core niches.

Market Expansion: Recent awards in both segments—such as USAF IDIQs for additional P5 pods and security upgrades, plus transit wins like SEPTA Key 2.0, OMNY equipment extensions, PATH, and Tasmania—show a growing footprint and multi‑year workload visibility. Product moves like Open Payments on Umo extend fare technology into mid‑sized agencies, broadening the addressable market.

Investor Backing & Capital Strength: A 2025 recapitalization added new liquidity and equity support from sponsors, reduced debt, extended maturities, and targeted substantial interest savings. In early 2026, an upgrade from selective default to CCC‑ with positive CreditWatch followed a deferred interest arrangement, signaling some near‑term financial relief.

Product Line Growth: Security remains the largest business and is expanding, while Cloud Infrastructure Services tied to compute and AI is growing rapidly. A multi‑year AI infrastructure commitment is reinforcing momentum in these newer lines.

Strong Market Position & Advantage: Across CDN/edge delivery and WAAP, the company is consistently evaluated as a leader by major analysts, with scale and an integrated portfolio cited as strengths. Independent assessments in DDoS mitigation, WAAP, and edge delivery reinforce leadership in core markets.

Future-Ready Strategy: The company is investing to evolve from CDN/security into a fuller cloud and edge compute platform, including GPU build‑outs and an AI‑focused infrastructure roadmap. Management signals stronger out‑year growth potential as large AI deals scale.

Strong Revenue Growth: Revenue is described as accelerating into 2026 with notable year-over-year increases in multiple quarters, supported by rising billings and upgraded full-year guidance. Feedback suggests momentum is broad-based across segments like Unified SASE and SecOps.

Profitability: Operating margins are characterized as high, with references to record non-GAAP operating margin and strong EPS performance. Feedback suggests profitability is growing alongside top-line expansion.

Healthy Cash Flow: Free cash flow is noted as strong, including a substantial quarterly figure approaching $1 billion and multibillion full-year levels. Feedback suggests sustained cash generation accompanies growth.

Strong Market Position & Advantage: Recognition as a Leader in Gartner’s 2025 and 2026 Backup and Data Protection Platforms Magic Quadrants, along with IDC’s 2025 Cyber Recovery Leader positioning, indicates durable competitive standing. Consecutive cycle confirmations and independent listings corroborate execution and vision at scale.

Investor Backing & Capital Strength: Multiple venture rounds culminating in a 2021 raise at a valuation above $2B underscore the capacity to finance expansion. This late-stage capital base aligns with continued product releases and partner activity highlighted into 2025–2026.

Strategic Partnerships: A strategic relationship with Microsoft (March 11, 2025) and successive expansions across Azure, Entra ID/Active Directory, and Power Platform show deepening ecosystem leverage. These moves suggest increasing enterprise footprint in Microsoft-aligned environments.