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Top Tech Companies in London (8,303)

Deloitte
Information Technology • Professional Services • Business Intelligence • Consulting
54 Offices
436,336 Employees
47 Benefits

Deloitte drives progress. Our firms around the world help clients become leaders wherever they choose to compete. Deloitte invests in outstanding people of diverse talents and backgrounds and empowers them to achieve more than they could elsewhere. Our work combines advice with action and integrity. We believe that when our clients and society are stronger, so are we. Deloitte refers...

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Deloitte

Deloitte's Top Stability & Growth Strengths

Strong Market Position & Advantage: Global consulting share is reinforced by multi‑year No. 1 rankings in Gartner market‑share analyses, with leadership placements across multiple consulting niches. Scale and an end‑to‑end model spanning strategy through technology, risk, tax, and audit underpin this advantage.

Strong Brand Reputation: Brand Finance repeatedly naming Deloitte the world’s most valuable commercial services brand signals wide market visibility and client trust. Consistent placement as a Leader in Gartner Magic Quadrants and IDC MarketScape coverage further supports perceived execution strength in complex transformations.

Resilient & Sustainable Growth: Global revenue rose in FY2024 and again in FY2025, with the workforce expanding and the Americas driving momentum while other regions varied. Ongoing mix shifts toward technology‑enabled consulting, Operate services, and AI‑related offerings suggest continued, balanced expansion.

RBS International
Fintech • Software • Financial Services
7 Offices
1,411 Employees
2 Benefits

The Royal Bank of Scotland International Holdings Limited operates six brands; RBS International, NatWest International, Isle of Man Bank, NatWest Trustee and Depositary Services, RBS International Depositary Services and Coutts Crown Dependencies. RBS International is a core part of NatWest Group plc – one of the UK’s largest banking groups. Our purpose is to champion potential, helping people, families and businesses...

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RBS International
Seep
Retail
London
16 Employees

At Seep we're cleaning up the way we clean up. Seep’s mission is to shake up dusty cleaning accessories products for the good of people and the planet. Brits spend £5bn every year making their homes clean, but most of the products they’re using aren’t. Our range of cleaning accessories (sponges, cloths, gloves, brushes) are designed to work brilliantly, look...

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Seep
Easyfairs
Events
27 Offices
900 Employees

Easyfairs is an event organiser that hosts exhibitions, trade shows, conferences, concerts, and sporting events, focusing on live, face-to-face experiences.

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Easyfairs
McGraw Hill
15 Offices
5,455 Employees
44 Benefits

At McGraw Hill, we empower the curious. Our market-leading innovations create a brighter future for learners, educators and institutions around the globe. Our vision: Unlock the full potential of each learner. Our mission: Accelerate learning through intuitive, engaging, efficient and effective experiences. We have a collective passion for learning and thrive on meeting the evolving needs of students, educators and institutions. We're committed...

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McGraw Hill
Patsnap
Artificial Intelligence • Software
9 Offices
500 Employees
19 Benefits

Founded in 2007, Patsnap is the company behind the world’s leading innovation intelligence platform. Patsnap is used by more than 10,000 customers in over 50 countries around the world to access market, technology, and competitive intelligence as well as patent insights needed to take products from ideation to commercialization. Customers are innovators across multiple industry sectors, including agriculture and chemicals,...

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Patsnap
Untap Health
Healthtech
London
13 Employees

Detecting infections before outbreaks occur

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Untap Health
Weaver
Information Technology • Software
London
50 Employees

Weaver.build is a platform that matches main contractors to vetted residential projects. We're backed by btov Partners, FJ Labs, OneFineStay Founders and Atlassian Executives

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Weaver
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...

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TradAir
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Khoros
Consumer Web • Marketing Tech • Professional Services • Social Media • Software
10 Offices
950 Employees
37 Benefits
Khoros powers the digital customer experience for the world's leading brands.

Khoros is a global leader in digital-first customer engagement software and services. We build enterprise software and offer expert services for digital customer service, messaging, chat, online brand communities, and social media management. Our platform is used by over 2,000 of the world's biggest and best brands to help them create customers for life.

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Khoros
Verve
AdTech • Artificial Intelligence • Digital Media • Marketing Tech • Mobile • Other • Software
10 Offices
1,000 Employees
37 Benefits
Let's make media better.

Verve connects advertisers to publishers in emerging channels. We provide AI-driven tools for effective, responsible ad campaigns. Our digital media solutions optimize under-leveraged ad inventory, enhancing outcomes across digital devices. As the digital world rapidly evolves, promises of privacy and transparency haven’t always kept pace. Advertisers, consumers, and businesses alike have faced challenges in navigating this complex landscape. At Verve, we...

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Verve
Searce
Business Intelligence • Consulting
12 Offices
1,455 Employees
14 Benefits

Searce means ‘a fine sieve’ ~ ‘to refine, to analyze, to improve’. It signifies our way of working: To improve to the finest degree of excellence, ‘solving for better’ every time. Searcians are passionate improvers, solvers & futurists. Driven by our engineering excellence mindset, we care most about delivering intelligent, impactful & futuristic business outcomes

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Searce
Sojern
AdTech • Digital Media • Machine Learning • Marketing Tech • Software • Travel • Hospitality
6 Offices
396 Employees
39 Benefits
Sojern is the #1 travel marketing platform built to help travel marketers.

Sojern is built on more than a decade of expertise analyzing the complete traveler path to purchase. We drive travelers from dream to destination by activating multi-channel branding and performance solutions on the Sojern Traveler Platform for more than 10,000 travel companies around the globe.

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Sojern

Sojern's Top Stability & Growth Strengths

Strong Revenue Growth: Available disclosures indicate revenue rose from $149.3M in 2022 to $165.7M in 2023 and $172.2M in 2024, showing steady top-line expansion. The 2025 acquisition by RateGain is framed around Sojern’s scale and continued growth potential.

Strong Market Position & Advantage: The company is repeatedly characterized as a leading travel/hospitality marketing platform and now sits within RateGain, with the combined platform serving roughly 13,000 customers worldwide. Ongoing publication of widely referenced research and destination marketing involvement signal category visibility.

Strategic Partnerships: Recent integrations and partnerships (e.g., Cloudbeds, PubMatic) and marquee wins (e.g., Ascott) expand distribution and activation routes and support performance. RateGain highlights cross-sell and AI-led campaign performance synergies tied to Sojern.

Torsion Information Security
Information Technology • Cybersecurity
London
12 Employees

As businesses evolve, users constantly share data access and move around, Torsion delivers powerful visibility and control of ‘who has access to what’ in Microsoft 365. Torsion seamlessly empowers data owners to take responsibility for their own data, because they understand their data best. Its 360-degree visibility and round-the-clock audit trail effortlessly satisfies compliance. And its intelligent automation eliminates inappropriate permissions...

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Torsion Information Security
Amadeus
Information Technology • Travel
30 Offices
10,001 Employees
29 Benefits

Travel powers progress. Amadeus powers travel. Amadeus’ solutions connect travelers to the journeys they want, linking them via travel agents, search engines and tour operators to airlines, airports, hotels, cars and railways. Technology has always been critical to developing global travel, increasing scale, choice and access. We have developed our technology in partnership with the travel industry for 30 years....

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Amadeus
Q3 Technologies
Blockchain • Information Technology • Software • Virtual Reality • Consulting • Cybersecurity • Generative AI
8 Offices
800 Employees
24 Benefits
Product Engineering & Software Development Services

Q3 Technologies is a global Managed IT Services provider offering end-to-end custom technology solutions, including software, mobile applications, data and BI, AI led digital transformation, cloud, ERP and CRM, cyber security, and UI/UX services. Our approach to solving our clients’ complex IT problems leverages the most effective and appropriate technology platforms suited for the job, and is driven by a...

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Q3 Technologies
OCS
Professional Services • Consulting • Design
14 Offices
135,000 Employees

O'Connor Sutton Cronin (OCSC) is an international multidisciplinary consulting engineering and project management practice founded in Dublin. It provides civil, structural, mechanical and electrical, sustainability, and traffic engineering design and consultancy, as well as project management and PSDP services. The firm serves institutional, commercial, domestic, and industrial clients and has delivered more than 11,000 projects across 15 countries for public...

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OCS
Vertice
Software
4 Offices
151 Employees

Vertice is the automated SaaS purchasing platform that simplifies buying, renewals and management of software applications, helping businesses streamline their procurement and save on SaaS spend. The Vertice platform consolidates all SaaS applications in one place, providing finance, procurement and IT leaders with a 360 view of their SaaS stack, contracts and renewal schedules. With an expansive database of more than 16,000...

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Vertice

Vertice's Top Stability & Growth Strengths

Strong Revenue Growth: The company is portrayed as rapidly expanding revenues with sustained acceleration over recent years. Statements highlight outsized growth since 2023 with momentum continuing into 2026.

Investor Backing & Capital Strength: The business secured sizable, recent funding rounds from well-known investors, described as an up-round and adding substantial capital. These funds are positioned to support product development, hiring, and geographic expansion.

Market Expansion: Operations and customer footprint span the US, EMEA, and APAC with plans for additional regional offices. Named enterprise customers across multiple countries indicate widening adoption.

PureSpectrum
Big Data • Marketing Tech • Sales • Software • Analytics • Big Data Analytics
11 Offices
283 Employees
62 Benefits Hiring Now
PureSpectrum makes it easy for researchers to find and source survey takers with speed and confidence.

Built on the ethos of making researchers’ jobs easier, PureSpectrum offers a research marketplace with global supportOur customers are always at the forefront of our minds as we push the industry’s data quality standards forward. Proud to be awarded MR Supplier of the Year in 2021, PureSpectrum continues to provide industry-leading data quality. PureSpectrum developed PureScore™ which monitors survey takers'...

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PureSpectrum

PureSpectrum's Top Stability & Growth Strengths

Investor Backing & Capital Strength: Recent funding rounds, including a $37M equity raise in March 2023, provide resources to support strategic initiatives and product innovation. This capital base underpins continued scaling despite challenging market conditions.

Market Expansion: Acquisitions and new regions (e.g., the Instant Insights acquisition and build‑out in MEA alongside APAC offices) broaden geographic reach and platform capabilities across many countries. This expansion signals increasing capacity to capture global demand.

Strategic Partnerships: An expanded 2025 alliance with Qualtrics makes PureSpectrum the exclusive quantitative panel provider in-platform while adopting Qualtrics as its exclusive synthetic panel provider. This ecosystem placement aligns the company with emerging synthetic-plus-human research workflows and supports scale.

Beyond Labs
Blockchain • Web3
London
26 Employees

About Beyond Labs: We are a pioneering technology company specializing in building cutting-edge Web3 ecosystems and decentralized solutions.

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Beyond Labs

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