London has become a giant hub for technology and innovation. Over the recent years, IT companies in London have seen a substantial rise. It offers a wide range of industries, from health care to wealth management, from luxury to retail and even food software. From banking to artificial intelligence, these London IT companies are at the forefront of social transformation. This article explores the exact top ten IT firms in London that are renowned for their ground-breaking inventions and technology.
Why IT Companies are Booming in London
- London’s IT industry is thriving due to the city’s strong financial sector, which drives demand for FinTech and digital solutions.
- The city also attracts students and employers from all around the world with its outstanding colleges and relaxed visa policies.
- Government subsidies like R&D tax credits encourage technical innovation and startups.
- London has an excellent network with cloud services and fast broadband and hence, it houses major tech companies.
- A strong startup environment backed by venture capital drives further expansion.
- Demand for IT is also on the rise because of the covid pandemic which demanded digitalization across industries. All things considered, London is a booming digital powerhouse due to its talent pool, investment climate and global reach.
- Another factor contributing to London’s growing tech economy is high salaries. Companies are giving high salaries, better incentives and many benefits for their software engineers.
The top-paying London IT companies are shown in the following table based on level of FYI’s findings:
| Companies | Compensation |
| HSBC | Rs. 17,966,964 |
| Rs. 16,649,439 | |
| Rs. 15,586,641 | |
| Byte Dance | Rs. 15,092,667 |
| Amazon | Rs. 14,540,839 |
Top 10 IT Companies in London
Here we list out the top 10 IT companies in london. Let’s get all the details one by one:
1) Revolut
Revolut is a fintech company. It was founded in 2015 and today is one of the biggest fintech companies, with 35 million customers in 48 countries.
It provides a range of services to individuals as well as businesses such as
- Banking
- Domestic and international money transfer
- Physical and virtual debit and credit cards
- Stock trading
- Cryptocurrency exchange
- Insurance in the health and travel sector
- It also provides services for other businesses with expense management
The global headquarters of Revolut are in London, UK, at 7 Westferry Circus, Canary Wharf. Collaboration with other significant financial institutions is made easier by its advantageous location at the centre of London’s financial district. Apart from its headquarters in London, Revolut has established an important presence abroad in cities like Paris, Singapore and Sydney.
Revolut Overview
| Category | Details |
| Industry | Fintech |
| Founded | 1st July, 2015 at Canary Wharf, London |
| UK Office Opened | 2015, London |
| Founders | Nikolay Storonsky Vlad Yatsenko |
| Current CEO | Nikolay Storonsky (Since 2015) |
| Revenue (2023) | $2.2 billion |
| Profit (2023) | $428 million net profit |
| Market Cap (2024) | $45 billion |
| Employees | Over 10,000 employees globally |
2) Google
In 1998, Larry Page and Sergey Brin established Google LLC, a global technology corporation. It is best known for its search engine, even though it is a part of Alphabet Inc., which owns a variety of technology- and innovation-related companies. Google is one of the largest IT service providers in London.
It also provides a plethora of services such as
- Search engine
- Advertising through google ads
- Google cloud for data analytics
- Tools like gmail, docs, drive, sheets and more
- Phones like Pixel and Android OS
- Chrome for web browsing
- AI tools like Gemini.
Google’s global headquarters are located in California, USA, whereas the london headquarter is located at King’s Cross, London and Pancras Square, London.
Google Overview
| Category | Details |
| Parent Company | Alphabet Inc. (Google’s parent company since 2015) |
| Google Founded | September 4, 1998, in Menlo Park, California |
| Google UK Office Opened | 2003, London |
| Founders | Larry Page and Sergey Brin (Stanford University PhD students) |
| Current CEO (Alphabet Inc.) | Sundar Pichai (since 2015) |
| Head of Google UK | Debbie Weinstein (Managing Director, Google UK & Ireland) |
| Revenue (2023) | $307.39 billion (Alphabet total) |
| Profit (2023) | $73.80 billion |
| Market Cap (May 2024) | ~$2.1 trillion |
| Employees in London | ~6,400+ (one of Google’s largest offices outside the U.S.) |
3) Accenture
Accenture is a global company that specializes in IT, consulting and digital transformation. Before becoming independent in 1989 and changing its name to Accenture in 2001, it was a consultancy branch of Arthur Andersen.
It operates specifically in areas like-
- Consulting
- Software development
- Digital marketing
- UX and design
- Automation
- Supply chain
- Engineering services
Its headquarters are in Dublin, Ireland whereas its London headquarters are located at 30 Fenchurch Street, London EC3M 3BD, UK.
Accenture Overview
| Category | Details |
| Industry | IT |
| Founded | 1989 as Andersen Consulting |
| Revamped to Accenture | 2001 |
| UK Office Opened | 2009 |
| Founders | Accenture originated from Arthur Andersen’s consulting division |
| Current CEO | Julie Sweet (since September 2019) |
| Revenue (2024) | $64.9 billion |
| Profit (2024) | $7.26 billion net profit |
| Market Cap (2024) | Approximately $212 billion |
| Employees | 774,000 globally |
4) Monzo
Monzo is another fintech giant. It offers a complete digital banking experience that is intended to be user-friendly and safe and focuses on the needs of the consumers.
It provides services like-
- Personal and joint accounts
- Loans and overdrafts
- Credit card
- Saving pots
- Cash ISAs
- Investments
- Insurance
- Business banking.
Its headquarters are at Broadwalk House, 5 Appold Street, London EC2A 2AG, United Kingdom.
Monzo Overview
| Category | Details |
| Industry | Fintech |
| Founded | February 18, 2015, London |
| UK Office Opened | 2015 |
| Founders | Tom Blomfield Paul Rippon Gary Dolman Jason Bates |
| Current CEO | TS Anil (since May 2020) |
| Revenue (2024) | $1.1 billion |
| Profit (2024) | $19 million net profit |
| Market Cap (2024) | $5.9 billion as of October 2024 |
| Employees | 3,800 globally |
5) Theodo
Theodo is a multinational software consulting firm that focuses on full-stack, agile software creation.
It provides services in-
- Web and mobile development
- Serverless architectures for AWS, Azure and GCP
- Cloud infrastructure
- AI development
- Venture building
It has been successful in having projects in fintech, health tech and retail. Its headquarters in London are located at 21 Soho Square, W1D 4NR.
Theodo Overview
| Category | Details |
| Industry | Software Consulting Firm |
| Founded | May 8, 2015 |
| UK Office Opened | 2015 |
| Founders | Benoit Charles-Lavauzelle Fabrice Bernhard |
| Current CEO | Toby Barrow (since May 2023) |
| Revenue (2024) | approximately $4.8 million |
| Profit (2024) | approximately $472,000 |
| Market Cap (2024) | Not Known |
| Employees (in UK) | 41 |
6) Wise
Wise was just a tiny concept in 2015 and today it has grown into a fintech giant with over 10 million clients. In 2011, Kristo Käärmann and Taavet Hinrikus founded Wise. By providing a transparent and affordable option for conventional banks, Wise has changed international money transfers.
It offers facilities such as-
- Multi-currency accounts
- Business accounts
- API enabling banks
- Debit cards
- Investments.
Its headquarters are located at The Tea Building, Shoreditch High St, London E1 6JJ, United Kingdom.
Overview
| Category | Details |
| Industry | Fintech |
| Founded | January 2011 in London |
| UK Office Opened | 2011 |
| Founders | Taavet Hinrikus Kristo Käärmann |
| Current CEO | Kristo Käärman (since May 2011) |
| Revenue (2024) | approximately $1.3 billion |
| Net Income (2024) | approximately $440 million |
| Market Cap (2024) | approximately $14 billion |
| Employees | 6,000 people globally |
7) Improbable
Improbable has changed the game with their simulations. It gives developers complete control over creating these incredibly intricate simulations, which is fantastic for gaming but also has a bunch of uses in other fields like urban planning, emergency response and defence.
Rob Whitehead, Peter Lipka, and Herman Narula launched the business in 2012. Improbable is the place to go if you’re a developer who wants to push the boundaries of what’s achievable with simulations and spatial computing.
It provides services such as-
- Metaverse and Gaming Infrastructure
- AI Solutions
- Interactive experiences
- Ventures
It focuses on three main areas- developing metaverse infrastructures, operating the said metaverse and venturing further into the metaverse. Its SpatialOS and Project Morpheus are one its most successful metaverse platforms. The address of its headquarters is 10 Bishops Square, London, E1 6EG, UK.
Improbable Overview
| Category | Details |
| Industry | Metaverse and Simulations |
| Founded | 2012 in Barnet, London |
| UK Office Opened | 2012 |
| Founders | Herman Narula Peter Lipka Rob Whitehead |
| Current CEO | Herman Narula (since 2012) |
| Revenue (2023) | approximately $82 million |
| Profit (2023) | approximately $13.5 million |
| Market Cap (2023) | Not known |
| Employees | 1,000 people globally |
8) Itransition
Itransition is a software development company and one of London’s best IT companies. It was founded in 1998 by Alex Demichev and Sergey Gvardeitsev. It caters to a huge number of clients and offers a range of IT consultancy and development services.
Its core services include-
- Development of custom softwares
- Development and maintenance of applications
- Technological guidance
- Digital solutions
- Analytics
- IT support
- Developments and operations
- Quality testing.
It has worked with various industries like healthcare, insurance, education and more. Its London headquarters is located at 5-8 Dysart St., London, EC2A 2BX.
Overview
| Category | Details |
| Industry | Software Development |
| Founded | 1998 in Minsk, Belarus |
| UK Office Opened | 2006 |
| Founders | Alex Demichev Sergey Gvardeitsev |
| Current CEO | Alex Demichev |
| Revenue (2022) | approximately $67.6 million |
| Profit (2022) | approximately $13.5 million |
| Market Cap | Not publicly listed |
| Employees | 3,000 globally |
9) Onfido
Onfido is an identity verification company. Three former Oxford students, Ruhul Amin, Eamon Jubbawy, and Husayn Kassai, founded it in 2012. It provides various verification solutions such as-
- Document verification
- Biometric verification
- Data verification
- Fraud detection
- No-code solutions.
It works in over 195 countries and its clients include revolut. Onfido’s London headquarters are located at 14-18 Finsbury Square, 3rd Floor, London, EC2A 1AH, United Kingdom.
Onfido Overview
| Category | Details |
| Industry | Software Development |
| Parent Company | Entrust Corporation (since 2024) |
| Founded | July 2012, London |
| UK Office Opened | 2012 |
| Founders | Husayn Kassai, Eamon Jubbawy, and Ruhul Amin |
| Current CEO | Mike Tuchen ( since november 2020) |
| Revenue (January 2024) | ~$109 million |
| Profit | – |
| Market Cap | Not publicly listed |
| Employees | 650+ |
10) Starling Bank
Often called a “Challenger Bank,” Starling Bank is a digital bank based in London that was established in 2014 by Anne Boden. It offers a range of personal and commercial banking services via its mobile app in an effort to give modern alternatives to traditional banks. It provides services in areas like-
- Personal banking
- Business banking
- Investment options
- Loans
- Insurances
- Banking as a service for businesses.
The headquarters are located on 5th Floor, London Fruit and Wool Exchange, 1 Duval Square, London, E1 6PW, United Kingdom.
Starling Bank Overview
| Category | Details |
| Industry | Fintech |
| Founded | January 2014, London |
| UK Office Opened | 2014 |
| Founders | Anne Boden |
| Current CEO | Raman Bhatia (since March 2024) |
| Revenue (March 2025) | ~$890 million |
| Net Profit (March 2025) | ~$350 million |
| Market Cap | Not publicly listed |
| Employees | 4000 |
Conclusion
The London IT space is growing at a rapid pace. From simulations and fintech, these IT companies are changing the digital world. London is a place to look at for you as an investor or job seeker. As London’s IT companies look set and secure, being a part of the London ecosystem is of great advantage. Job seekers can maximise this opportunity and be part of the tech sector in London.
FAQs
Q1. How is London’s IT space?
Ans. London’s IT space is on a rise and opportunities in the IT sector are highly available
Q2. Which IT company in London compensates the most?
Ans. HSBC compensates the most among the IT companies in London.
Q3. What is Revolut?
Ans. Revolut is a fintech company.
Q4. Where is Google’s headquarter in London?
Ans. Google’s London headquarter is located at King’s Cross, London and Pancras Square, London.
Q5. What services does Onfido provide?
Ans. Onfido provides various verification solutions such as document verification, biometric verification, data verification, fraud detection and no-code solutions.
Also read about: Top Fintech Companies and Startups to Watch in 2025
