The UK IT services market is on a steep upward trajectory, expected to generate US$113.46 billion in revenue by 2025, with IT outsourcing alone contributing US$44.50 billion. This surge reflects a growing reliance on external expertise as businesses seek efficient, secure, and scalable tech solutions.
Recent high-profile breaches have further reinforced the need for professional IT support. In April 2025, the Co-op was forced to shut down part of its internal systems following a major IT hack attempt. Similarly, Marks & Spencer came under scrutiny after a major cyberattack exposed customer data, affecting online orders and internal communications. These incidents underscore how critical robust IT infrastructure and cybersecurity have become for UK retailers and service providers alike.
To help businesses cut through the noise, this blog highlights the top 8 IT support companies in London, ranked by verified reviews, industry recognition, service quality, and expertise.
Disclaimer: All the details listed are based on the latest information available at the time this post was published. The companies are listed according to the number of reviews.
1. Dotsquares – 4.7 Stars with 505 Trustpilot Reviews
Contact Information:
- Website: https://www.dotsquares.com/
- Address: Unit 2 Hobbs Court, 2 Jacob Street, London SE1 2BG
- Call: +44 208 0901819
- Email: office@dotsquares.com
Dotsquares is a global IT support firm and has offices in London, the United Arab Emirates, the United States, Australia, India, and France. They have a staff of over 1,000 experts who have completed more than 10,000 projects for customers in a variety of industries.
Key Services:
- Design & Development Services
- Enterprise Services
- Support Services
- Digital Marketing
- Cloud Services
- Data & AI Services
- Security Services
IT Experience:
Established in 2002, Dotsquares has more than 23+ years of experience. They have completed 27,000+ successful projects for 15,000+ clients.
Awards & Accreditations:
- Corporate Vision News 2020 winner
- 2020 Winner Business Excellence Awards
- HubSpot Themes Challenge 2021 winner
- Adobe Commerce 2.4.4 Beta Program Winner
- E-commerce Awards winner 2022
- SME IT Awards winner 2022
- 20th Asian Achievers Awards winner
- Gatwick Diamond Business Awards 2023
- Official member of the Forbes Technology Council.
Offers & Discounts:
10% off on the first invoice
2. Peiko – 5 Stars with 126 Clutch Reviews
Contact Information:
- Website: https://peiko.space/
- Address:14 Hewett Street, London EC2A 3NN
- Call: +44 (20) 3769-0654
- Email: hello@peiko.space
For over seven years, Peiko has empowered startups and established brands alike to realise their potential and attain favourable outcomes. Through the company’s technological IT solutions and business tools, clients have gained the means to generate additional revenue and drive success.
Its objectives include offering startups and prominent brands avenues for growth and success, as well as facilitating additional profit through technological support and business tools.
Key Services:
- Web Development services
- Blockchain Development Services
- Outsourcing Software Development
- Mobile App Development Services
- Marketplace Development
- DevOps Service
- UI/UX Design Services
- Custom Software Development Services
- IT Outstaffing Services
- Blockchain Development Consulting
- SaaS Development Services
IT Experience:
Established in 2017, Peiko comprises a team of 85+ professionals. They have built numerous successful projects with blockchain as their primary specialisation, accounting for nearly 80% of their portfolio.
Awards & Accreditations:
- The Best Blockchain developers (2021, 2022, 2023, 2024)
- Top 1000 B2B companies (2022, 2023)
- The Best eCommerce Developers (2023, 2024)
- The Best Fintech Company (2023, 2024)
- The Best Next.js Developers (React) (2023, 2024)
- Clutch Global (Fall, Spring)
- Clutch Champions (Fall, Spring)
3. IT Support by ClickDo – 4.9 Stars with 95 Google Reviews
Contact Information:
- Website: https://it.clickdo.co.uk/
- Address: Suite 78, Unit 3a, 34-35 Hatton Garden, Holborn, London, EC1N 8DX
- Call: 020 8144 1536
- Email: it@clickdo.co.uk
ClickDo IT Support operates as a London-based managed IT services provider, delivering comprehensive technology solutions to businesses with teams of 20 to 1,000 employees.
The company specialises in proactive IT management, ensuring seamless business operations through strategic technology planning and expert support services. Their approach focuses on collaborating with innovative companies that highly value technology infrastructure and prioritise robust security measures.
Key Services:
- IT Consulting, Compliance & Audit
- Managed Cloud Services
- Data Backup and Recovery
- Cybersecurity
- Hardware Installation and Maintenance
- Help Desk Support
- Network Management and Monitoring
- Software Development and Maintenance
- Managed IT Services
- VoIP Phone Services
IT Experience:
With over 15 years of experience in the sector, ClickDo IT Support has established itself as a reliable technology partner, providing 24/7 IT assistance to ensure continuous business operations.
Offers & Discounts:
They offer free consultancy.
4. Vention – 4.9 Stars with 95 Clutch Reviews
Contact Information:
- Website: https://ventionteams.com/uk
- Address: 30 Churchill Place, London E14 5RE
- Call: +44 207 117 2842
Vention collaborates with the internal engineers of their clients to provide advice, carry out their product vision, and take their business to new heights.
Their goal is to give inventive leaders around the world instant, high-fidelity access to the best engineering talent from the most prestigious tech hubs in the world.
Key Services:
- Software Development
- Mobile Development
- Web Development
- Cloud Development
- IT Services for Startups
- Leadership as a Service
- Cybersecurity Services
IT Experience:
Established in 2002, Vention boasts over 20 years of expertise across 30+ industry verticals and 25+ technologies.
Awards & Accreditations:
- ISO/IEC 27001:2022 certification for Information Security Management Systems
- SME News IT Awards – Most Innovative Healthcare Software Development Enterprise in the UK
- Gold Victory in the 4th Annual 2024 Globee Awards for Disruptors
- 2024 National Technology Awards – Best Tech Place to Work in the UK
- In: Vention Incubator 2024 – Supporting Pointlift.ai as the winner
5. Totality Services – 4.6 Stars with 65 Trustpilot Reviews
Contact Information:
- Website: https://www.totalityservices.co.uk/
- Address: 20a St George Wharf, Vauxhall, London SW8 2LE
- Call: 020 3744 3105
- Email: info@totalityservices.co.uk
With their cutting-edge technology and IT assistance, you can boost your workforce and business processes. They are here to simplify your life, from security to smooth onboarding for your new staff.
To show how easy it is for customers to use the services for all their IT needs, you should take your time, thoroughly investigate, and stick around for a bit.
Key Services:
- IT Support Service
- Security & Compliance Service
- Consultancy Service
IT Experience:
Established in 2008, the company has more than 10+ of experience. Totality Services is ISO9001 and ISO27001 certified & operates with 40+ IT experts based in Vauxhall, London.
Awards & Accreditations:
- 2024 Feefo Platinum Trusted Service Award
Offers & Discounts:
The audit & proposal process is free of cost
6. Operum.Tech – 4.9 Stars with 55 Google Reviews
Contact Information:
- Website: https://operum.tech/
- Address: 85 Great Portland Street, First Floor, London W1W 7LT
- Call: 0800 389 6798, 020 8099 2659
- Email: hello@operum.tech
Operum.Tech is an esteemed IT services provider based in London, offering robust and tailored solutions to global clients across diverse industries and scales.
With a broad and customisable range of IT support services, they provide Managed IT Services, assuming complete responsibility for clients’ IT operations, from regular maintenance to troubleshooting.
Key Services:
- Touchless IT Support
- IT Support Services
- Cyber Security
- Cloud Computing
- IT Compliance
IT Experience:
Established in 1998, Operum has over 22 years of experience serving the UK international market, currently supporting approximately 3,000 users.
Offers & Discounts:
Up to 50% discount on projects
7. Light IT Global – 4.9 Stars with 50 Clutch Reviews
Contact Information:
- Website: https://light-it.net/
- Address: First Floor Office, 3 Hornton Place, London W8 4LZ
- Call: +44 208 089 9049
- Email: sales@light-it.net
Light IT Global is your one-stop shop for top-notch web and mobile app development. It focuses on maximising your return on investment by optimising workflows, suggesting cost-saving improvements, and ensuring on-time delivery.
In addition to receiving the appropriate support, you gain access to industry-specific technical insights, ensuring your business maintains a competitive edge at all times. They guarantee that all your expectations are not only met but exceeded, providing you with a digital solution that is both innovative and cost-effective, tailored precisely to your needs.
Key Services:
- AI/ML
- Custom Software Development
- Product Discovery
- Big Data / Data Processing
- Software Audit & Consulting
- MVP Development
- Data Science
- Dedicated Teams Formation
- CTO-as-a-Service
- Digital Product Prototyping
- Maintenance & Support
IT Experience:
For over 18 years, it has delivered custom solutions to 500+ companies from around the world. Light IT Global has served as a reliable technical partner for over 500 companies, delivering 400+ end-to-end projects with 30+ ongoing initiatives.
Awards & Accreditations:
- DOU Best Employer – 2014
- Upwork Top Agency – 2019
- TechBehemoths Awards – 2021
- App Developer Awards – 2021
- Company of the year – 2022
- Award for High Reputation – 2023
- IAOP Global outsourcing 100 – 2024 & 2025
- Clutch 1000 – 2024
- Clutch Global – Fall 2024
- Clutch Top Company (Web Developers) – 2024
- Business of Apps – 2024
- Top Software Developers & AI Development Companies by techreviewer.co – 2024
8. Itransition – 4.9 Stars with 39 Clutch Reviews
Contact Information:
- Website: https://www.itransition.com/
- Address: 3rd floor, 5-8 Dysart St., London EC2A 2BX
- Call: +44 203 687 2281, +44 203 687 2282
- Email: info@itransition.com
Itransition’s comprehensive suite of consulting and development services empowers businesses worldwide. Their team of over 3,000 IT experts combines technical skills with business acumen, tackling projects of any size and complexity with proven methodologies.
Their software consultants aid customers in choosing the optimal technology stacks for their solutions. Whether it’s selecting a programming language or a ready-to-use platform, they assist businesses in evaluating the advantages and disadvantages of various technologies before initiating their projects.
Key Services:
- IT consulting
- Application services
- Software engineering
- Managed IT services
- Smart teams
- Quality assurance & testing
- DevOps
- Maintenance & Support
IT Experience:
Founded in 1998, Itransition has been recognised in the industry and served over 800 clients.
Awards & Accreditations:
- Global Outsourcing Top 100 list for 15 consecutive years (2007-2021)
- Deloitte Technology Fast 500 – 2020
- Everest Group – Top 25 leading software development companies (2021)
- Forrester’s Modern Application Development Services report (2022)
- Zinnov Zones (2018) & Leadership Zone (2020)
- Software 500 list of fastest-growing software and service providers (since 2009)
- Clutch Top Custom Software Developers, Ecommerce Developers, Java Developers, .NET Developers (since 2014)
Final Thoughts: Choosing the Right IT Support in London
In conclusion, London offers a wide range of top-notch IT support services that cater to the diverse needs of businesses in the city. From specialised technical expertise to efficient customer service, these top 8 IT support providers have proven their excellence in delivering reliable and effective solutions.
Whether for small startups or large corporations, businesses in London can rely on these IT support services to enhance their operations and ensure the smooth functioning of their technology infrastructure.
If you want us to add a suggestion here based on your experience, please get in touch with us!
Author Profile
- Online Media & PR Strategist
- As the Chief of Marketing at the digital marketing agency ClickDo Ltd I blog regularly about technology, education, lifestyle, business and many more topics.
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