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
8 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.
Ezulix is a custom software development company specialising in bespoke software designs tailored to specific business requirements. Ezulix specialises in on-demand solutions in the following fields:...
Top Services:
eCommerce Development
Web Development
Web Design
Software Development
IT Services
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Location
London, United Kingdom
Number of Employees
100 - 249
Average Hourly Rate
$30/hr
Minimal Budget
$1,000 - $10,000
Ezulix Services
eCommerce Development
Web Development
Web Design
Software Development
IT Services
Mobile App Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Foodee
Secure-X
Doctor+
Data sourced from the agency's DesignRush profile
Ezulix Reviews & Testimonials
Evan Merali Managing Director at Raymond James
5.0★
Web Development Review from Evan Merali
We had a great experience working with Ezulix for the Web Development project. We were already impressed with their prolific experience in the same field coupled with reasonable pricing. Our project was complex and the architect at Ezulix conducted thorough review and displayed an impeccable understanding of the the functionalities and implementations.All of the deliveries were made in the timely manner. We highly recommend their services to anyone looking for blockchain application development.
robert burr Executive Vice President at Prince Contracting, LLC
5.0★
Software Development Review from robert burr
Ezulix has focus on a highly responsive portfolio management solution capable of handling thousands of large, complex projects. The agency developed core technologies for the platform while collaborating closely with their team. Although remote work posed some challenges, we remarked that Ezulix's efficient project manager worked diligently to solve communication issues.
Ruth McMenamin Head of Marketing at Canopy & Stars
5.0★
eCommerce Development Review from Ruth McMenamin
The team rarely encounters a design that truly leaves them in awe, but Ezulix's work perfectly captured the desired temperament and even surpassed expectations. The feedback from existing users familiar with the old website has been overwhelmingly positive. Every aspect of the UX/UI design contributed to creating a website beyond what was initially envisioned. The team wholeheartedly recommends Ezulix for exceptional design solutions.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
dotcode is a full-cycle software development company. At dotcode, we know how its crucial to understand the users needs when building a successful product. Our team combines amazing minds in Front-End, Back-End, Web and Mobile Development, Quality Assurance, Business Analysis, and UI/UX Design...
Top Services:
Software Development
Mobile App Development
Web Development
Web Design
Product Design
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Location
London, United Kingdom
Number of Employees
Under 49
Average Hourly Rate
$35/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
21 Projects Listed
dotcode Services
Software Development
Mobile App Development
Web Development
Web Design
Product Design
AI Development
UI/UX Design
DevOps Consulting
Cloud Consulting
Digital Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Thrive
Venue Report
Ply
FlyJets
Prove
Lynked
Provoso
Bedrock
Educational Copilot
Heritage Humanities
Data sourced from the agency's DesignRush profile
dotcode Reviews & Testimonials
Khang Pham founder at TxK Gaming Studios GmbH
5.0★
Mobile App Development Review from Khang Pham
Choosing dotcode was one of the best decisions we made for our business. Their team's ability to understand our vision and turn it into reality was remarkable. Not only did they provide app development, but they also ensured our project was completed quickly and successfully. Their post-payment work format eliminated any risks on our end, making the collaboration seamless and stress-free. We couldn't be happier with the result
Ben Goodfellow Managing Director at Bristol Technology Group
5.0★
Web Development Review from Ben Goodfellow
Dotcode exceeded our expectations in every way possible. Their commitment to meeting deadlines and budgets was evident from the start, and they delivered a flawless end product. The transparency they maintained throughout the project gave us peace of mind, knowing exactly where things stood at all times. If you're looking for a reliable partner for your design and development needs, look no further than dotcode
Sofia Diaz Brand & Creative Strategist | at Known
5.0★
Product Design Review from Sofia Diaz
I had an idea and vision, which intent helped me bring to life. We required a platform that would be usable on different types of mobile and desktop devices, as well as work on different browsers.We went through the process of designing the product and building an MVP. Their UX designer evaluated the mockups I gave them. Then, they gave me some suggestions on how to improve the product and provided a UI designer, who built the interfaces.From there, intent handled the following stages of product development. We went through several iterations based on user feedback for the MVP, and every feature was QA-tested before release. Now, we continue to improve the product on a monthly basis.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
We integrate, innovate, and elevate enterprise systems.
Intellectsoft builds custom software, AI solutions, and dedicated engineering teams for enterprises and fast-growing businesses across the US and UK...
Top Services:
Software Development
Mobile App Development
Wearables
Software Testing
Blockchain
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Location
London, United Kingdom
Number of Employees
100 - 249
Average Hourly Rate
$80/hr
Minimal Budget
$50,000 & Up
Portfolios Count
12 Projects Listed
Intellectsoft Services
Software Development
Mobile App Development
Wearables
Software Testing
Blockchain
AI Development
UI/UX Design
Big Data Analytics
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Harley-Davidson
the London Stock Exchange
Ernst & Young
Qualcomm
Bombardier
Data sourced from the agency's DesignRush profile
Intellectsoft Reviews & Testimonials
Harshal Chhajed Undisclosed at Undisclosed
4.5★
Software Development Review from Harshal Chhajed
They have highly skilled support staff for faster resolution which leads to customer satisfaction. Also, it has many features including IoT and blockchain apart from regular software development. If there are any changes in the scope of the project at a later stage, it can prove quite costly and also difficult to accommodate last-minute client-side scripting changes. They are versatile, cost-effective, and offer quick customer support. They offer a very customized software development tool where business needs can be addressed. It is very cost-optimized and hence can help generate good returns for business investment.
Vitaly Dyachenko CEO and Founder at UppLabs LLC
5.0★
Software Development Review from Vitaly Dyachenko
Intellectsoft provided a great partnership by delivering quality services and working fast. They helped us to accomplish all the clients' projects on time. The team communicated transparently and showed [] great dedication. They were an ideal partner! (Verified via email)
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Dedicated to Transforming Your Business Operations and Online Presence
Unleash the Full Potential of Your Business with Tailor-Made Mobile App, VR, AR and Software Development...
Top Services:
Mobile App Development
Software Development
eCommerce Development
Digital Marketing
VR/AR
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Location
London, United Kingdom
Number of Employees
Under 49
Average Hourly Rate
$40/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
11 Projects Listed
Digital Solutions UK Services
Mobile App Development
Software Development
eCommerce Development
Digital Marketing
VR/AR
AI Development
IoT
DevOps Consulting
ERP Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Fire Survey System
EZE Shoring
MySpec
Go List
Force One
Crystals Healing Lights
Simon Payne National Roofing
KM Herbs
CEG Consulting
Site Pro
Data sourced from the agency's DesignRush profile
Digital Solutions UK Reviews & Testimonials
T-W-S Nationwide Managing Director at TWS Nationwide
5.0★
Mobile App Development Review from T-W-S Nationwide
Fire survey systems is a project myself and Rob at digital solutions created in 2021 from the start we have continued to grow the project and this has been a dream app that fits right into the business Digital solutions delivered the scope of the app to the best standard and we will continue working with them continuously, they are a excellent business to connect up with to aid your business
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Dotsquares head office is based in Albourne (near Brighton and Hove), United Kingdom with international offices in the US, Australia, Europe, UAE, and has in-house development centres in Jaipur, India...
Top Services:
Software Development
Mobile App Development
IT Services
Web Design
Digital Marketing
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Location
London, United Kingdom
Number of Employees
500 - 999
Average Hourly Rate
$11/hr
Minimal Budget
Under $1,000
Dotsquares Ltd Services
Software Development
Mobile App Development
IT Services
Web Design
Digital Marketing
CRM Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
NHS
ShieldPay
Ocean Holidays
Daily News
Beat The Brochure
Microsoft
Virgin Australia
Dunkin Donuts
Ericsson
Bose
Data sourced from the agency's DesignRush profile
Dotsquares Ltd Reviews & Testimonials
Ben Lord Review from Google
1.0★
Ben Lord's Review Sourced from Google
I’m not usually one for making posts like this about other companies I do business with but given what I’ve experienced over the last 5 years, I feel very compelled to raising awareness into my experiences with Dotsquares.Initially, this company was very good at handling our website requirements. It was thanks to this that when I became the owner of Lorryspotting.com that I figured it would make sense to have them upgrade that website. It was a big project but with all the accolades and expertise that Dotsquares boasts about, it seemed to be within their scope of capability.Instead, it turned into the most miserable of projects that was riddled with the purest incompetence that I’ve had the misfortune to witness in almost 20 years of business. As per their terms of business, I advanced paid for part of the project yet they were incapable of delivering a functioning website. Added to this, the ageing status of the old site meant we suffered a server failure 16 months ago and when restoring the old site, it was proven that Dotsquares negligently compromised the colossal amount of data held on that site to potential hackers. By this point, enough was enough. Despite so-called “project managers” apparently understanding my business, they became mouthpieces with a catalogue of excuses and rhetoric that failed to take responsibility enveloped by expectations we would continue to pay to fix what they had caused.Ordinarily, escalating this to a company’s CEO should yield an immediate improvement to rectifying a situation. The CEO of this company ignored my email and relegated its handling to the very people causing the problem and failing to deliver any outcomes. It was therefore with no other alternative that I had to commence legal proceedings against this company. Despite repeated attempts to defend what was in essence an indefensible position, we reached a settlement on the matter, the terms of which I’m bound by a confidentiality order but has avoided it being played out before a Judge.Based on my reflections, this company may theoretically claim to value their customers but in reality their actions speak far louder. They do not deserve to be in business and I can’t even begin to fathom how they deal with some of the brands that their client list cites. I would absolutely urge anyone who does, or considers to work with them in any capacity to run for the hills - you will regret it otherwise! I only wish I had of checked out some of the reviews that are out there - reflecting on them now resonates virtually a carbon copy as to my experiences!
Aussie Lamp Centre Review from Google
5.0★
Aussie Lamp Centre's Review Sourced from Google
Congratulations to Dotsquares on 23 Amazing Years! 🎉A big congratulations to the entire Dotsquares team on reaching this incredible milestone! Special thanks to Manish Gujral, Priya, Pravin, Reetu, Jaishiv, and Ramavtar for your exceptional contributions.A special shout-out to "The A team" Manish Gujral, Priya, Pravin, reetu, Jaishiv, and Ramavtar for your exceptional contributions and dedication to this journey. We have been privileged to work with the digital marketing and development team for the last 4 years, and it’s been a fantastic experience. Here’s to many more years of success and innovation!
Palak Vig Review from Google
1.0★
Palak Vig's Review Sourced from Google
I have been waiting for my website to be completed for two years now, and the experience has been increasingly frustrating. The lack of timely communication and follow-ups from their side has been disappointing. Despite my repeated efforts to get updates and move things forward, progress has been unreasonably slow. I expected a much higher level of professionalism and responsiveness. I hope they take this feedback seriously and improve their communication and delivery timelines moving forward.
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unicrew is a full-scale software development, consulting and design company, which provides a full spectrum of services - from design and software development to the unfailing commitment to quality assurance...
Top Services:
Software Development
Product Design
Web Design
Web Development
eCommerce Development
Show more
Location
London, United Kingdom
Number of Employees
50 - 99
Average Hourly Rate
$60/hr
Minimal Budget
$10,000 - $25,000
unicrew Services
Software Development
Product Design
Web Design
Web Development
eCommerce Development
AI Development
Mobile App Development
Software Testing
DevOps Consulting
Cybersecurity
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts