Leaf through the premier custom software development companies in London that customize, maintain and/or build high-quality solutions, mobile applications and more. Filter listings by reviews, pricing, team size to find the ideal team for your project requirements and budget.
Best London Software Development Firm Rankings
12 Companies-Rankings updated: September 12, 2026
DesignRush assesses agencies using expertise standards and verified client experiences to help you make better decisions. Certain agencies have paid placements.
Zamratech, a globally recognized company based in the United States, has become a leading worldwide application developer. We provide a comprehensive range of digital services, including web design, mobile app development, software development, and cross-platform development, offering a complete 360-degree...
Top Services:
Mobile App Development
Software Development
Web Development
Blockchain
IoT
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Location
London, United Kingdom
Number of Employees
100 - 249
Average Hourly Rate
$35/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
2 Projects Listed
Zamratech Services
Mobile App Development
Software Development
Web Development
Blockchain
IoT
AI Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Swarm Circle
Wealthy Gen
Booray App
Nestle
Wallmart
Rx Calendar
New York Dating
Daraz Ecommerce
Data sourced from the agency's DesignRush profile
Zamratech Reviews & Testimonials
John Line Architecture owner at Simply Business
5.0★
AI Development Review from John Line
Zamratech demonstrated an unwavering commitment to delivering high-quality results. They went above and beyond to ensure that the AI models not only met but exceeded our expectations. Their dedication to excellence was evident in the meticulous testing, refining, and fine-tuning of the algorithms until they achieved optimal performance.
Jack Clark Executive Director at U.S. Wrestling Foundation
5.0★
AI Development Review from Jack Clark
We worked with Zamratech to improve our financial services by utilizing cutting-edge AI machine learning and data science methods. Our objective was to streamline the process of generating financial insights so that we could offer our clients recommendations based on data that was more precise and useful.
John Lennon Enterprise Account Executive at Pluralsight
5.0★
Blockchain Review from John Lennon
The team is enough knowledgeable and professional about blockchain to make the project excellently. They analyze their business idea deeply, then devoted developers ensure to launch your platform within the stipulated time frame.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
We build tailored data platforms that help businesses collect, transform and turn data into insights
GroupBWT is a consulting firm specializing in data management and the construction of data platforms. Our approach combines classical data warehousing with robust visualization tools, ETL processes, and business intelligence...
Top Services:
Big Data Analytics
AI Development
Web Development
Software Development
Mobile App Development
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Location
London, United Kingdom
Number of Employees
50 - 99
Average Hourly Rate
$45/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
14 Projects Listed
GroupBWT Services
Big Data Analytics
AI Development
Web Development
Software Development
Mobile App Development
UI/UX Design
Product Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
World Health Organization
Columbia University
BCG
Simba Sleep
CWR
Kimberly Clark
VeView
Data sourced from the agency's DesignRush profile
GroupBWT Reviews & Testimonials
Undisclosed Undisclosed at Healthcare Industry
5.0★
Mobile App Development Review from Undisclosed
Alexandra and GroupBWT did great job! Provided us with the detailed audit for our system, specified how it can be improved, what should be paid attention to during the re-design and provided the best practices we can utilize. Also they formed clear and detailed scope of work for the further re-design. They definitely know how audit should be performed and the deliverable was even beyond my expectations. Strongly recommend Alexandra and GroupBWT team!
Anonymous CTO at Tech Startup
5.0★
Software Development Review from Anonymous
GroupBWT aligned with our business needs. The video-based app helped attract new customers quickly. Post-launch support was responsive, with fixes coming fast. They acted like partners invested in our outcome.
Anonymous Research Associate at Market Research Organization
5.0★
Mobile App Development Review from Anonymous
GroupBWT supported us with specialists across disciplines. The platform earned praise from global analysts for ease of use and reach. Their ability to scale teams quickly kept momentum steady.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Since 2003, scandiweb has helped global brands and startups grow through Magento development, mobile solutions, and practical AI for eCommerce. Clients include Jaguar, Land Rover, Peugeot, The New York Times, and 700+ businesses in 35 countries...
Top Services:
eCommerce Development
UI/UX Design
Mobile App Development
VR/AR
AI Development
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Location
London, United Kingdom
Number of Employees
500 - 999
Minimal Budget
$1,000 - $10,000
Portfolios Count
16 Projects Listed
Scandiweb Services
eCommerce Development
UI/UX Design
Mobile App Development
VR/AR
AI Development
Web Design
IoT
Software Development
SEO
Digital Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Wallmart
New York Times
Lafayette148NY
Rockar
Buff
Jysk
Kuru footwear
Lamborghini
Samsung
Puma
Data sourced from the agency's DesignRush profile
Scandiweb Reviews & Testimonials
Marc Casper Chairman, President and CEO at Thermo Fisher Scientific
5.0★
Digital Advertising Review from Marc Casper
For the digital marketing portion of the project, Scan tracked growth and engagement on our social media platforms. It was clear that their work directly drove growth in our online presence. On the web development side, our investors and internal executive stakeholders were impressed with their work. Its too early to truly gauge the value of the site, but in the immediate term, those who didn't like the old site have really liked the new one.They were great with structuring regular Zoom calls to keep everything on track. Outside of these calls, we communicated via email and Basecamp.
Amanda Watts Founder at Business Advisor Academy
5.0★
Digital Advertising Review from Amanda Watts
In our email marketing campaigns, we've seen a 25% return on investment. Our PPC ROI is 250%. They've found a way to attract an audience to our site despite safety training not being an objectively exciting subject.Their project management skills are fantastic. They report progress to us multiple times a day, which keeps me happy. Scandiweb is always in touch with us to make sure we know how everything is going. We never have to chase them down about anything.
JOSHUA MARGOLIS Owner and Founder at Mind Over Matter
5.0★
eCommerce Development Review from JOSHUA MARGOLIS
The purpose of this project is to redesign the existing website with a modern, user-friendly interface and integrate a custom checkout system tailored for subscription-based services. The new design will enhance the user experience, improve site performance, and streamline the subscription process to increase conversions and customer retention.The speed at which you completed the project without compromising on quality is truly impressive. Not only did you meet our tight deadlines, but the site also looks modern, runs smoothly, and the functionality has been greatly improved.Your attention to detail, responsiveness, and ability to quickly address any feedback or issues along the way made the whole process seamless. This upgrade has already made a significant difference, and we couldn't be happier with the results.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
It's the best app to sell Multichannel on Shopify. Otherwise you would have to pay 2000$ for Shopify PLUS.Support and Features are Great! Thats a company you want to work with together as a B2B seller!Especially thank you Jonas!
James Batson Review from Google
5.0★
James Batson's Review Sourced from Google
Great company with excellent customer service. Helped us solve an issue on our Magento 2 website, highly recommend to anyone looking for Magento plugins or development.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Innovative Web & App Solutions for Growing Businesses.
Devtrios is a web and mobile app development agency specializing in custom software solutions. Our expertise in React.js, Next.js, and AWS allows us to build fast, scalable, and user-friendly digital products. From e-commerce platforms to enterprise applications, we help businesses enhance their online...
Top Services:
Mobile App Development
Software Development
AI Development
Blockchain
Web Development
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Location
London, United Kingdom
Number of Employees
Under 49
Minimal Budget
$1,000 - $10,000
Portfolios Count
9 Projects Listed
Devtrios Services
Mobile App Development
Software Development
AI Development
Blockchain
Web Development
UI/UX Design
Design Services
WordPress Website Design
eCommerce Development
SEO
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Vita VIP International
Asset Planet Inc
fabric
Joseph Chamberlain Sixth Form College
DataRovers, LLC
Cashii
Fairagora Asia
TaxiF
Cheetah
8fit Workouts & Meal Planner
Data sourced from the agency's DesignRush profile
Devtrios Reviews & Testimonials
Robert Rose Review from Google
5.0★
Robert Rose's Review Sourced from Google
We needed a custom dashboard for our operations team. Devtrios delivered a tailored web app that works exactly the way we need. Secure login, responsive design, real-time updates the works. Great attention to detail and no hand-holding required.
William Shepard Review from Google
5.0★
William Shepard's Review Sourced from Google
We’ve worked with Devtrios across multiple projects web design, mobile apps, and backend APIs. They consistently deliver high-quality work, hit deadlines, and offer solid after-launch support. Their team is reliable, skilled, and easy to work with.
Meta Broughton Review from Google
5.0★
Meta Broughton's Review Sourced from Google
Devtrios built our iOS and Android app from scratch, and the result blew us away. The app is intuitive, fast, and bug-free. They handled everything from design to deployment and kept us in the loop the whole time. Easily one of the most professional mobile app teams we’ve worked with.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
We design, build, and evolve enterprise-grade digital systems combining thoughtful design, robust architecture, engineering precision, and AI expertise to deliver technology that scales, performs, and lasts...
Top Services:
Software Development
Location
London, United Kingdom
Number of Employees
100 - 249
Average Hourly Rate
$50/hr
Minimal Budget
$1,000 - $10,000
RONIS Services
Software Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Script Studio Technology delivers smart, scalable digital solutionscombining creative thinking with advanced technology to help brands build, grow, and innovate...
Top Services:
UI/UX Design
Branding
Web Development
Mobile App Development
Software Development
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Location
London, United Kingdom
Number of Employees
50 - 99
Average Hourly Rate
$15/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
4 Projects Listed
Script Studio Technology Private Limited Services
UI/UX Design
Branding
Web Development
Mobile App Development
Software Development
Blockchain
Digital Services
eCommerce Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Market research and digital solutions for B2B organisations and their media clients.
We provide intelligent research and digital solutions for a wide range of media partners in the UK and overseas, helping them to build stronger, deeper relationships with their advertising and exhibitor clients. Through working together, our partners can:- Grow new revenue streams with strong growth...
Top Services:
Market Research
Software Development
Mobile App Development
IT Services
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Location
London, United Kingdom
Number of Employees
Under 49
Minimal Budget
$1,000 - $10,000
Edge Insight Services
Market Research
Software Development
Mobile App Development
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Based in the vibrant city of London, we specialise in providing comprehensive web, digital, and software services tailored to meet the unique needs of businesses and organisations globally...
Top Services:
Graphic Design
Web Development
eCommerce Development
WordPress Website Design
SEO
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Location
London, United Kingdom
Number of Employees
Under 49
Average Hourly Rate
$25/hr
Minimal Budget
$1,000 - $10,000
Hirnaj Services
Graphic Design
Web Development
eCommerce Development
WordPress Website Design
SEO
Digital Marketing
Social Media Marketing
Mobile App Development
Software Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts