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Top Tech Companies in London (8,305)

King
News + Entertainment
7 Offices
6,473 Employees
16 Benefits Hiring Now
Making the World Playful

King is a leading interactive entertainment company in the mobile world. We create unforgettable games that are played around the world every single day, like Candy Crush, our sweet phenomenon. King is an independent unit of Activision Blizzard Inc. which acquired King in February 2016.

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King

King's Top Stability & Growth Strengths

Strong Market Position & Advantage: Candy Crush’s decade‑plus top‑grossing performance, multi‑billion downloads, and frequent top placements in U.S. charts indicate a durable category lead for King. Microsoft ownership provides added distribution and ecosystem leverage that reinforces this position.

Resilient & Sustainable Growth: Record quarters in 2023 and continued billion‑dollar performance for Candy Crush into 2024–2025 show durable monetization years after launch. Ongoing live‑ops and events (e.g., All Stars) help sustain spend over time.

Strategic Partnerships: Integration within Microsoft Gaming after the Activision Blizzard acquisition offers cross‑promotion, deeper resources, and distribution optionality. Post‑deal earnings commentary repeatedly cites King/Candy Crush as material contributors to overall gaming results.

Convelio
Logistics
3 Offices
213 Employees
20 Benefits Hiring Now

Convelio is a global logistics startup specialized in fine art shipping. As a licensed freight-forwarder, we specialize in the global shipping of high-end goods using our proprietary algorithm to offer competitive real-time shipping quotes and an end-to-end, turn-key, logistics service to the art market. Our goal is to make the shipping of bulky and valuable items as easy as pie for...

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Convelio
Insider One
Marketing Tech • Software • Conversational AI • Generative AI
5 Offices
1,512 Employees
19 Benefits Hiring Now
The #1 platform that brings everything marketing and customer engagement teams need in one place, to become unstoppable.

Insider One is the #1 platform that brings everything marketing and customer engagement teams need in one place so they can reach their peak potential and become unstoppable. With AI at its core and an integrated Customer Data Platform (CDP), Insider One unites data, personalization, and journey orchestration across the most extensive set of natively supported channels, including WhatsApp, SMS,...

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Insider One

Insider One's Top Stability & Growth Strengths

Strong Market Position & Advantage: Insider One is repeatedly described as being placed in leader tiers by major analyst evaluations for personalization/experience optimization and AI-enabled marketing platforms, alongside strong category placement in G2 grids. The rebrand positions the company as a “complete customer engagement platform,” reinforcing an ambition to compete across a broader platform scope.

Investor Backing & Capital Strength: Multiple large funding rounds are cited, including a substantial Series E intended to accelerate AI investment and U.S. expansion. These raises are presented as consistent with a scale-up trajectory and capacity to fund growth initiatives.

Market Expansion: The data references U.S. expansion focus, global footprint across many offices, and investments planned in new geographies as indicators of continued scaling. Customer-count claims and reported new-customer additions are presented as signals of expanding adoption.

IONATE
Information Technology • Energy
London
26 Employees
Hiring Now

IONATE is transforming power systems through deep-tech innovation. Its Hybrid Intelligent Transformers equip key electricity players with the data and power flow control they need in an ever-evolving system. One device alone brings comprehensive sensing & monitoring, dynamic voltage-, power factor- and harmonics control capabilities. But a network of them, coordinated by our digital platform, unlocks systemic responsiveness as the...

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IONATE
Redis (redis.io)
Cloud • Software
7 Offices
1,345 Employees
31 Benefits Hiring Now
The world's fastest data platform.

Redis is the world's fastest data platform. We provide cloud and on-prem solutions for caching, vector search, and more that seamlessly fit into any tech stack. With fast setup and fast support, we make it simple for digital customers to build, scale, and deploy the fast apps our world runs on.

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Redis (redis.io)
Me&u
Hospitality
4 Offices
106 Employees
1 Benefits Hiring Now

me&u is used by 6000+ bars, pubs, and restaurants to create memorable guest experiences and grow their brands.

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Me&u
Brunswick Group
3 Offices
1,550 Employees
22 Benefits Hiring Now

Brunswick is an advisory firm specialising in business critical issues. We help companies build trusted relationships with all their stakeholders. When clients turn to us, it’s because they know that engaging effectively with everyone who has a stake in the company is about more than managing perceptions - it is essential to making business work. Our background in financial...

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Brunswick Group
Natixis Investment Managers
Financial Services
15 Offices
2,000 Employees
17 Benefits Hiring Now

Natixis Investment Managers’ multi-affiliate approach connects clients to the independent thinking and focused expertise of more than 15 active managers. Ranked among the world’s largest asset managers*, Natixis Investment Managers delivers a diverse range of solutions across asset classes, styles, and vehicles, including innovative environmental, social, and governance (ESG) strategies and products dedicated to advancing sustainable finance. The firm partners...

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Natixis Investment Managers
SimCorp
Software
36 Offices
3,062 Employees
17 Benefits Hiring Now

SimCorp is a provider of industry-leading integrated investment management solutions for the global buy side. Founded in 1971, with more than 3,000 employees across five continents, we are a truly global technology leader who empowers 40 of the world’s top 100 financial companies through our integrated platform, services, and partner ecosystem. SimCorp is a subsidiary of Deutsche Boerse Group. For more information, see...

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SimCorp
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GTT
Information Technology • Security • Design
33 Offices
3,031 Employees
29 Benefits Hiring Now

GTT is a managed network and security services provider to global organizations. We design and deliver solutions that leverage advanced cloud, networking and security technologies. We complement our solutions with a suite of professional services and exceptional support teams in local markets around the world. We serve thousands of national and multinational companies with a portfolio that includes SD-WAN, security,...

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GTT

GTT's Top Stability & Growth Strengths

Strong Revenue Growth: Consolidated revenues and EBITDA at Gaztransport & Technigaz increased markedly in 2023–2024 with further growth guided for 2025. A sizable multi‑year order book and recent LNG carrier awards provide strong visibility.

Strong Market Position & Advantage: GTT Communications operates a Tier‑1 global IP backbone across continents and is recognized as a Leader in managed network services by ISG and industry programs. A broad enterprise customer base and continued awards reinforce standing in its specialized domains.

Future-Ready Strategy: Both organizations are investing in forward‑looking capabilities, including hydrogen and alternative fuels (GTT S.A.) and SASE/SD‑WAN platforms plus 400G/800G backbone upgrades (GTT Communications). These initiatives position them to address evolving demand and regulatory drivers.

Hearst
Digital Media • News + Entertainment
27 Offices
3,010 Employees
25 Benefits Hiring Now

Hearst is a leading global, diversified media, information and services company with more than 360 businesses. Its major interests include ownership in cable television networks such as A&E, HISTORY, Lifetime and ESPN; global financial services leader Fitch Group; Hearst Health, a group of medical information and services businesses; transportation assets including CAMP Systems International, a major provider of software-as-a-service solutions...

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Hearst

Hearst's Top Stability & Growth Strengths

Strong Revenue Growth: Hearst is described as achieving record revenue in 2024 with a further increase in 2025, indicating continued top-line expansion. Growth is attributed primarily to strong performances in Fitch Group and Hearst Television, alongside the expanding B2B information-services mix.

Diversified Revenue Streams: The portfolio spans B2B information services (financial, health, transportation software/data) as well as magazines, newspapers, television, and cable network stakes, creating multiple earnings engines. The shift toward higher-margin, recurring information services is portrayed as helping offset cyclicality and headwinds in ad-dependent consumer media.

Strong Market Position & Advantage: Fitch Group is positioned as one of the global top credit rating agencies, while Hearst Health, transportation software assets, and several media properties are characterized as leaders or top-tier operators in their niches. This combination of category-leading B2B franchises and scale media assets is presented as a competitive moat that supports resilience.

Multiverse Computing
Artificial Intelligence • Machine Learning • Financial Services • Quantum Computing
11 Offices
480 Employees
Hiring Now

Multiverse Computing is a leading quantum software company that leverages artificial intelligence and quantum-inspired solutions to solve complex challenges across sectors like finance, banking, energy, and cybersecurity. Its mission is to be a global leader in technological innovation, utilizing products like Singularity and CompactifAI to enhance AI efficiency and optimization for industrial value chains.

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Multiverse Computing
Latham & Watkins
Legal Tech
12 Offices
7,653 Employees
27 Benefits Hiring Now

Latham & Watkins is a global law firm with more than 3,500 lawyers in its offices located in Asia, Europe, the Middle East and the United States. The firm has internationally recognized practices in a wide spectrum of transactional, litigation, corporate and regulatory areas. Our success is grounded in our devotion to the collaborative process, which reaches across global offices...

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Latham & Watkins

Latham & Watkins's Top Stability & Growth Strengths

Strong Revenue Growth: Revenue is portrayed as reaching a record $8.3B in 2025 after $7.0B in 2024, with sustained double-digit increases over multiple years. Feedback suggests growth stems from both higher revenue per lawyer and expansion of the firm’s platform.

Profitability: Profit per equity partner is considered to have risen sharply to about $8.65M–$8.7M, indicating strong bottom-line performance. Observations highlight concurrent gains in both revenue and partner profits.

Strong Market Position & Advantage: The firm is often described as a top-tier global leader with extensive Band 1 rankings and dominance in M&A, private equity, and capital markets. Feedback suggests a powerful international footprint supporting complex cross-border work.

2i
Information Technology • Consulting
3 Offices
203 Employees
Hiring Now

Whoever said 'don't sweat the small stuff' never worked in software development. In this business, we know it's the small stuff that can be your downfall: costing millions to put right, damaging reputations, and setting your project back months. With this much at stake, there is simply no room for error. And that's where we come in. We have the scale, the...

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2i
MUFG Investor Services
Financial Services
13 Offices
1,267 Employees
Hiring Now
We are a global leader in asset servicing and operational transformation—built for alternatives.

MUFG Investor Services is a trusted partner to many of the world’s largest public and private funds, providing asset servicing and operational solutions built for alternatives. With over $1 trillion in client assets under administration, we offer fund administration, business process outsourcing, banking, payments, fund financing, foreign exchange overlay, corporate and regulatory services, custody and depositary solutions, business consulting, and...

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MUFG Investor Services

MUFG Investor Services's Top Stability & Growth Strengths

Strong Market Position & Advantage: Market presence is reinforced by surpassing $1 trillion in AUA with further growth to about $1.28 trillion and multiple 2025–2026 industry awards signaling leadership in alternatives. Leadership pockets such as funds‑of‑funds and an integrated operating model are cited as reasons for wins with sophisticated managers.

Market Expansion: Expansion is visible in AUA progression from $1.0 trillion (Feb 2024) to $1.28 trillion (Q3 2025), a broader custody footprint around $670 billion, and new mandates such as APAC sub‑custodian selections. Company materials also highlight ongoing solution launches and geographic footprint growth across Europe, the US, and Asia‑Pacific.

Investor Backing & Capital Strength: Stability is underpinned by being part of Mitsubishi UFJ Financial Group, providing balance‑sheet resources and global reach to bundle administration with financing, FX, and custody. This backing supports client confidence when consolidating providers under a single umbrella.

Hometree
Appliances • Utilities
London
98 Employees
Hiring Now

Hometree is a home energy services company on a mission to accelerate the transition to net zero. By fixing, installing and financing home energy hardware, we're helping homeowners transition to low-carbon living, when they’re ready. Heating is responsible for 14% of all greenhouse gas emissions in the UK. If we're serious about hitting those net zero goals to mitigate the...

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Hometree
Fusion Consulting
Information Technology • Consulting
4 Offices
287 Employees
1 Benefits Hiring Now

Transforming Life Science Consulting Worldwide. Fusion Consulting is a globally leading Business and IT management consultancy specialized in the Life Sciences industry, partnering with leading companies in pharma, healthcare, and other industries. With over 450 employees and 25 offices worldwide, our mission is to revolutionize our clients' business transformation challenges and set new industry standards through innovative solutions. Focused on S4/HANA, Data &...

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Fusion Consulting
UnlikelyAI
Artificial Intelligence • Information Technology • Software • Automation
London
43 Employees
1 Benefits Hiring Now

UnlikelyAI is a deep tech startup working to create a world where highly intelligent automated systems enable humanity to flourish and benefit us all. We are pioneering transformative technology aimed at making Artificial Intelligence more accurate, trustworthy and safe. We are combining the fantastic opportunities created using LLMs with the trust, accuracy and explainability of symbolic/algorithmic methods, which together we...

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UnlikelyAI
Kiki London
On-Demand • Sharing Economy • Hospitality
London
22 Employees
Hiring Now
London invite-only sublet club (just launched!)

We’re not about property, we’re solving a deeply human trust problem: how do you feel comfortable sharing your home with someone you don't know yet? Our answer: by showing you how you can trust someone through mutual friends and similarity while being an invite-only community so everyone's a friend of a friend. We successfully built this over the last 7 years...

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Kiki London
Playstack
Digital Media • Gaming • Mobile • Software
4 Offices
Hiring Now

Playstack is a leading indie game publisher and developer that helps creative developers from around the world bring their game visions to life through expert strategy and support.

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Playstack

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