Top Cyber Security Companies in London (209)

Market Expansion: CSC operates in 140+ jurisdictions and opened a larger Luxembourg office in June 2024 to build for continued growth, citing an expanding local client base and about 600 staff there. Headcount disclosures reiterate a global workforce of more than 8,000, reflecting a broader operational footprint.

Product Line Growth: The Intertrust acquisition and full migration to the CSC brand in April 2024 expanded capabilities across corporate, fund, and capital‑markets administration. The Eddystone Financial Services acquisition in June 2023 added loan agency services in Australia and New Zealand, broadening regional offerings.

Strong Market Position & Advantage: CSC highlights service to more than 90% of the Fortune 500 and the 100 Best Global Brands, indicating deep enterprise penetration. Company materials emphasize a large, integrated platform serving clients in 140+ jurisdictions.

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: Net revenue rose 14% year over year in Q2 2026 (12% currency‑neutral) to $9.3B, with first‑half 2026 up 15% and full‑year 2025 up 16% (15% currency‑neutral). These results indicate sustained top‑line momentum across recent periods.

Diversified Revenue Streams: Value‑Added Services & Solutions grew 20% in Q2 2026 (18% currency‑neutral) and 23% in 2025, outpacing Payment Network growth. This mix shift adds a faster‑growing second engine alongside the core network.

Resilient & Sustainable Growth: Transaction fundamentals remained healthy in Q2 2026—gross dollar volume +8% to $2.9T, cross‑border +12%, and switched transactions +9% (local‑currency). Multi‑year growth from 2025 into the first half of 2026 underscores durable momentum.

Strong Revenue Growth: Revenue is rising, with 2025 reaching $89.5B (highest since 2018) and Q2 2026 at $24.6B as deliveries increased versus last year. The multi‑quarter trend indicates business scale is recovering.

Healthy Cash Flow: Cash generation is improving, highlighted by Q2 2026 positive operating cash flow and $0.6B in free cash flow. This shift reflects higher deliveries and working‑capital tailwinds.

Resilient & Sustainable Growth: Backlog has reached a record ~$715B, including over 6,200 commercial airplanes, supporting multi‑year production. This depth of contracted demand underpins revenue visibility.

Investor Backing & Capital Strength: Bridgepoint agreed to acquire a majority stake in July 2026 with explicit plans to accelerate product innovation (including AI), international expansion, and selective M&A, with closing expected by year‑end 2026. Prior growth capital from Insight Partners in 2021 further supports a multi‑year scale‑up trajectory.

Product Line Growth: The July 2025 acquisition of Redjack added passive network discovery and application dependency mapping, broadening the platform’s capabilities and use cases. Ongoing 2026 releases (e.g., “Lansweeper Connect – Spring 2026”) point to an active product cadence.

Market Expansion: Company materials evolved from citing 25,000+ to 28,000+ customers and now reference 30,000+ environments, and a U.S. municipal FY2026 budget line indicates a planned increase in Lansweeper spend. MSP‑focused offerings and launch events have historically aligned with entry into new buyer segments.

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 is advancing at a double‑digit pace in early 2026, with successive quarters outperforming internal targets and full‑year guidance raised. Momentum is driven by U.S. Financial Services and improving International trends.

Profitability: Earnings are expanding, with adjusted EBITDA and adjusted EPS up year over year and full‑year guidance implying further gains. Absolute EBITDA improved even as the company invested and integrated recent acquisitions.

Market Expansion: Reach is widening through improved performance in Canada, the U.K., and India, alongside completed acquisitions in Mexico and a mobile division that extend capabilities. These moves contributed to stronger reported results and a higher outlook.

Strong Revenue Growth: Management disclosures characterize Capco as delivering sequential and year-over-year growth through late FY2025 and into FY2026, with explicit notes that it "continues to perform well." This suggests sustained client demand within its core domains even as it operates inside Wipro’s broader portfolio.

Market Expansion: The launch of a Calgary Energy & Utilities practice in May 2026 and ongoing activity across regions indicate on-the-ground investment and geographic/practice expansion. These moves point to selective growth into new markets alongside established BFSI strengths.

Strategic Partnerships: Collaborations in digital assets and AI (e.g., with Taurus in Europe and recognition at OpenAI’s 2026 Partner Summit) are being used to broaden offerings and enable cross-selling. Such alliances signal entry into adjacent, higher-growth service lines.

Strong Revenue Growth: Revenue is rising rapidly across recent periods, with FY2026 results and the subsequent quarter both showing sharp year-over-year increases and strong subscription-led momentum. Management raised the FY2027 outlook following the latest quarter, underscoring continued demand.

Healthy Cash Flow: Free cash flow is meaningfully positive and improving at scale, including a healthy margin in Q1 FY2027 and a large year-over-year increase in FY2026. Improving subscription contribution margins indicate growing operating leverage.

Strong Market Position & Advantage: Independent analyst recognitions place the company among market Leaders for backup/data protection and cyber recovery, often highlighted for vision. Expanding large-customer cohorts and post-IPO scale further reinforce competitive standing.

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.

Market Expansion: Global reach has widened with new operations in France, Denmark, and Sweden atop existing footprints in the U.S., Canada, the U.K., Australia, and Germany. Expansion into enterprise segments via higher-limit offerings and a major partnership with Allianz supports entry into larger markets.

Innovation-Driven Growth: The Active Insurance model blends coverage with continuous security monitoring, and acquisitions like Wirespeed deepen automated threat mitigation and MDR capabilities. Scaling incident response and AI-driven security offerings signals ongoing product and technology expansion.

Investor Backing & Capital Strength: Capital foundations include roughly $800M raised, a $5B valuation, and strategic equity ties with major global insurers. Reported cash-flow positive operations and active secondary-market interest further reinforce financial capacity to scale.

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.