Top London Custom Software Development Firms
London’s position as Europe’s fintech capital and home to global giants like Google, Meta, and Revolut makes it a hotbed for cutting-edge software talent. Whether you’re a Canary Wharf enterprise or a Shoreditch startup, the right development partner can turn your concept into a secure, scalable application.
Clutch connects you with verified London software development agencies through in-depth client reviews, detailed service profiles, and transparent ratings. Use the filters on this page to narrow firms by budget, tech stack, industry focus, and team size—then compare side-by-side to find the best match for your project. Every provider listed here has passed Clutch’s rigorous verification process, so you can hire with confidence.
Looking to compare a broader pool of experts? Explore the global list of Top Software Development Companies
Considering nearby talent hubs? Check out agencies in Manchester and Bristol
Need industry-specific partners? View our filter for London Healthcare Software Developers
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Featured
What are Featured Providers?
$25,000+$25 - $49 / hr50 - 249London, EnglandServices provided
See all 33 projectsTech Alchemy is a bespoke software development company specializing in full-stack and custom software creation, often integrating advanced technologies like AI and blockchain. Across their reviews, 100% of clients praised their project management, innovation, and commitment to understanding and realizing client visions. Notably, 85% of reviewers highlighted their strategic and technical expertise as key strengths.
$25,000+$25 - $49 / hr1,000 - 9,999Serves London, EnglandServices provided
See all 82 projectsSimform is a custom software development company specializing in tailored software solutions across various industries, including SaaS, healthcare, and financial services. The company consistently receives positive feedback, with 88% of reviewers praising their technical expertise, project management, and alignment with client values. Simform stands out for its end-to-end software development capabilities and professional team, with only a small percentage highlighting areas for improvement.
$25,000+$25 - $49 / hr50 - 249Serves London, EnglandServices provided
See all 29 projectsDBB Software is a bespoke software development company specializing in tailored software development and full stack software development services. Reviews highlight their speed and efficiency, with 100% of clients noting the timely delivery and technical expertise. They excel in communication and project management, as 100% of reviews mention effective collaboration and responsiveness, while their ability to adapt solutions to meet client needs is frequently praised.
$25,000+$25 - $49 / hr50 - 249Serves London, EnglandServices provided
See all 53 projectsLeobit is a Custom Software Development company known for its strong expertise in modern architecture and end-to-end software development. Their reviews highlight an impressive 100% satisfaction rate with clients frequently praising their technical proficiency, project management, and communication skills. Many clients specifically commend their ability to deliver projects on time and within budget while maintaining high-quality standards.
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UndisclosedUndisclosed10 - 49London , England
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In London , England, JabberJam UK is a web design company. They specialize in Web Design and UX/UI Design.
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$10,000+$50 - $99 / hr2 - 9Albourne, England
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Based in Albourne, England, We Talk IT is a small IoT development company. Their services include IoT development and Custom Software Development.
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Featured
What are Featured Providers?
$10,000+$25 - $49 / hr50 - 249Serves London, EnglandServices provided
See all 3 projectsAttrecto Next Tech Digital Solutions is a versatile software development company specializing in mobile app and web platform development. They consistently deliver high-quality results, as evidenced by positive client feedback highlighting their strong project management, flexibility, and innovative approach. Notably, they maintain a 100% satisfaction rate among clients, with numerous mentions of their adaptability and comprehensive project execution.
$25,000+$50 - $99 / hr1,000 - 9,999London, EnglandServices provided
See all 98 projectsVention is a bespoke software development company specializing in custom software creation and full-stack software development. Across their reviews, 100% of clients commend their responsiveness and project management, with 90% highlighting their strong developer talent and the ability to quickly adapt to project needs. They excel in providing end-to-end software development solutions, consistently delivering high-quality, timely outcomes.
$10,000+< $25 / hr250 - 999Serves London, EnglandServices provided
See all 42 projectsDreamzTech Solutions is a custom software development company specializing in tailored and bespoke software creation. Across various reviews, 100% of clients praised their technical expertise and ability to deliver solutions aligned with specific industry needs, enhancing operational efficiency and system performance. Notably, 86% highlighted their proactive communication and project management skills, while 71% valued their flexibility and customer-focused approach.
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UndisclosedUndisclosed10 - 49London, England
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Web development company Quip Global was launched in 2014. The agency focuses on Web Development and Mobile App Development, and is small.
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Get My MatchesWhy Trust Clutch
At Clutch, we believe trust is the foundation of every business relationship. Our mission is to help buyers make confident, data-backed decisions informed by real client experiences.
Every review on Clutch undergoes a rigorous, human-led verification process to make sure it’s valid. Our team of specialists confirms the identity of each reviewer, ensures the project is legitimate, and only publishes reviews that meet our strict criteria.
Verification doesn’t stop at the point of publication. Our Trust & Safety team routinely audits older reviews against our guidelines. When reviews fall short of our standards, we remove them.
We evaluate service providers using a structured methodology that combines:
- In-depth client interviews and ratings
- Comprehensive project details
- Market presence
- Portfolio examples and industry recognition
This data powers tools like the Leaders Matrix, which helps you compare agencies directly. Our research team curates rankings by weighing verified reviews most heavily, so the most trusted and experienced providers rise to the top.
Using this unique combination of verified client feedback and provider-supplied insights, Clutch distills the most important details into clear, digestible summaries so you have everything you need to make confident, informed decisions quickly.
We take fraud seriously. Providers who violate our guidelines may face lower rankings, restricted visibility, or removal from the platform altogether.
Clutch’s commitment to transparency is ongoing. We’re constantly refining our systems to protect the integrity of reviews and support you in finding the right agency.
List of London's Top 15 Software Companies | Top 15 London Software Developers
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$50,000+$25 - $49 / hr250 - 999London, England
Ability to deliver
39.8/40.020/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
40% Custom Software Development60% Other -
$25,000+$50 - $99 / hr1,000 - 9,999Woodbridge Township, NJ
Ability to deliver
39.8/40.020/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
30% Custom Software Development70% Other -
$25,000+$50 - $99 / hr250 - 999London, England
Ability to deliver
39.5/40.019.6/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
45% Custom Software Development55% Other -
$10,000+$25 - $49 / hr250 - 999London, England
Ability to deliver
39.9/40.020/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
25% Custom Software Development75% Other -
$50,000+$50 - $99 / hr1,000 - 9,999London, England
Ability to deliver
39.3/40.020/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
20% Custom Software Development80% Other -
$10,000+$50 - $99 / hr250 - 999Novi Sad, Serbia
Ability to deliver
39/40.019.4/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
60% Custom Software Development40% Other -
$10,000+$50 - $99 / hr50 - 249Toronto, Canada
Ability to deliver
38.9/40.019.4/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
45% Custom Software Development55% Other -
$50,000+$150 - $199 / hr250 - 999Ljubljana, Slovenia
Ability to deliver
39/40.019/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
25% Custom Software Development75% Other -
$1,000+< $25 / hr50 - 249Hertfordshire, England
Ability to deliver
39.2/40.020/20 Reviews9.9/10 Clients & Experience9.3/10 Market PresenceService focus
35% Custom Software Development65% Other -
$25,000+$50 - $99 / hr50 - 249London, England
Ability to deliver
38.1/40.018.2/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
50% Custom Software Development50% Other -
$50,000+$25 - $49 / hr1,000 - 9,999London, England
Ability to deliver
37.6/40.017.8/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
30% Custom Software Development70% Other -
$25,000+< $25 / hr1,000 - 9,999London, England
Ability to deliver
37.3/40.017.4/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
50% Custom Software Development50% Other -
$25,000+$25 - $49 / hr50 - 249London, England
Ability to deliver
37.3/40.017.6/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
40% Custom Software Development60% Other -
$50,000+$25 - $49 / hr1,000 - 9,999London, England
Ability to deliver
37.2/40.017.4/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
45% Custom Software Development55% Other -
$1,000+$25 - $49 / hr1,000 - 9,999London, England
Ability to deliver
38.8/40.019.4/20 Reviews9.6/10 Clients & Experience9.8/10 Market PresenceService focus
15% Custom Software Development85% Other -
$50,000+$50 - $99 / hr250 - 999London, England
Ability to deliver
36.6/40.016.6/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
50% Custom Software Development50% Other -
$25,000+$25 - $49 / hr50 - 249London, England
Ability to deliver
36.5/40.017.6/20 Reviews10/10 Clients & Experience8.9/10 Market PresenceService focus
40% Custom Software Development60% Other -
$25,000+$50 - $99 / hr1,000 - 9,999London, England
Ability to deliver
36.2/40.016.2/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
50% Custom Software Development50% Other -
$10,000+$100 - $149 / hr10 - 49London, England
Ability to deliver
37.3/40.017.8/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
40% Custom Software Development60% Other -
$50,000+$25 - $49 / hr250 - 999London , England
Ability to deliver
36.3/40.016.4/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
25% Custom Software Development75% Other -
$10,000+$100 - $149 / hr250 - 999London, England
Ability to deliver
37.8/40.018.6/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
20% Custom Software Development80% Other -
$10,000+$25 - $49 / hr50 - 249London, England
Ability to deliver
35.8/40.016.6/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
40% Custom Software Development60% Other -
$10,000+$50 - $99 / hr50 - 249London, England
Ability to deliver
37.7/40.018.8/20 Reviews10/10 Clients & Experience8.9/10 Market PresenceService focus
30% Custom Software Development70% Other -
$25,000+$25 - $49 / hr1,000 - 9,999London, England
Ability to deliver
35.6/40.015.8/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
20% Custom Software Development80% Other -
$75,000+$50 - $99 / hr1,000 - 9,999London, England
Ability to deliver
35.5/40.016.4/20 Reviews9.8/10 Clients & Experience9.2/10 Market PresenceService focus
40% Custom Software Development60% Other -
$10,000+$25 - $49 / hr250 - 999London, England
Ability to deliver
37.4/40.017.8/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
20% Custom Software Development80% Other -
$25,000+$25 - $49 / hr50 - 249London, England
Ability to deliver
37.4/40.017.6/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
30% Custom Software Development70% Other -
$50,000+$150 - $199 / hr250 - 999London, England
Ability to deliver
35.3/40.015.6/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
30% Custom Software Development70% Other -
$10,000+$25 - $49 / hr250 - 999London, England
Ability to deliver
35.7/40.016.2/20 Reviews9.7/10 Clients & Experience9.8/10 Market PresenceService focus
25% Custom Software Development75% Other -
$100,000+$50 - $99 / hr1,000 - 9,999Wrocław, Poland
Ability to deliver
36.7/40.016.8/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
16% Custom Software Development84% Other
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London Software Developer FAQs
Working with a local team offers unique, strategic advantages that a remote partner may not be able to provide, including:
- Time-zone alignment with the rest of Europe for real-time collaboration.
- Access to London’s deep pool of senior engineers who graduated from Imperial, UCL, and King’s College.
- Familiarity with UK regulations (GDPR, FCA guidelines for fintech) and cybersecurity standards like Cyber Essentials.
- Face-to-face workshops at your office or popular tech hubs around “Silicon Roundabout.”
Rates for hiring a London-based software development firm vary based on several factors, including complexity, team seniority, and technical requirements. To give you a better understanding, here’s a breakdown of costs based on Clutch data:
- Hourly: £75 – £150 for most mid-sized agencies, while boutique specialists may charge up to £200.
- Fixed-price MVP: £30,000 – £80,000 for a 3 – 6 month build.
- Enterprise platforms: £150,000+ for multi-year, multi-team engagements.
London rates are higher than many UK regions, but proximity, talent density, and strategic guidance often justify the premium costs.
Thanks to London’s diverse economy, experienced software development agencies regularly build solutions for clients from various industries and niches, such as:
- Fintech and insuretech
- E-commerce and retail tech
- Healthtech and med-device integrations
- Media, gaming, and streaming platforms
- Proptech and smart-city applications
Many teams also offer sector-specific compliance expertise, such as ISO-13485 for healthcare or PCI DSS for payments.
Start by defining success metrics—launch date, KPIs, budget cap—and shortlist agencies with matching case studies. After that, review Clutch client feedback for proof of the following:
- Transparent, agile workflows (e.g., weekly sprints, demo days)
- Strong communication skills and cultural fit
- Clear IP ownership terms and NDA policies
- Relevant tech-stack certifications (AWS Partner, Microsoft Gold, etc.)
Arrange technical interviews with lead developers, not just sales reps, before signing an agreement.
- Vague estimates or refusal to detail sprint deliverables
- No local references despite claiming London headquarters
- Overreliance on junior offshore teams without senior oversight
- Lack of cybersecurity or GDPR compliance processes
- “One-size-fits-all” proposals that ignore your business goals
A credible agency will proactively address these areas and tailor their approach to your needs. It’s better to be meticulous when selecting prospective partners than to be contracted with an unfit team.