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.
Algosoup is a London-based software development company that provides AI-native, forward-deployed engineering services by embedding software engineers into client teams. It supports startups, scaleups, enterprises, and agencies with rapid MVP development, product engineering, AI integration, legacy...
Top Services:
AI Development
Software Development
Mobile App Development
Software Testing
eCommerce Development
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Location
London, United Kingdom
Number of Employees
Under 49
Average Hourly Rate
$300/hr
Minimal Budget
$25,000 - $50,000
Algosoup Services
AI Development
Software Development
Mobile App Development
Software Testing
eCommerce Development
VR/AR
Blockchain
IoT
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
TrueiGtech is a leading iGaming software development company holding specialization in; Prediction Market, Sweepstakes Sportsbook, Online Casino, Slot and more. Using cutting-edge technologies we deliver turnkey, white-label, and customized solutions facilitating secure and scalable gaming systems...
Top Services:
Software Development
Mobile App Development
IT Services
UI/UX Design
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Location
London, United Kingdom
Number of Employees
100 - 249
Average Hourly Rate
$100/hr
Minimal Budget
$10,000 - $25,000
TrueiGtech Services
Software Development
Mobile App Development
IT Services
UI/UX Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Apptension helps brands, investors and innovators build their digital products.
Apptension is a creative product studio focused on crafting innovative experiences and delivering cutting-edge tech to our partners.We work with founders, investors, and creative agencies to help them bring uncommon ideas to the market. Among our clients - plenty of early-stage startups, as well as...
Top Services:
Mobile App Development
Software Development
eCommerce Development
VR/AR
Product Design
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Location
London, United Kingdom
Number of Employees
50 - 99
Average Hourly Rate
$58/hr
Portfolios Count
30 Projects Listed
Apptension Services
Mobile App Development
Software Development
eCommerce Development
VR/AR
Product Design
Web Design
UI/UX Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Heineken
Netflix
Uber
Spotify
Universal
mTab
LESS
Viu
Hyper
PepTalk
Data sourced from the agency's DesignRush profile
Apptension Reviews & Testimonials
Undisclosed Software Engineering Manager at Cannabis Company
4.8★
Web Development Review from Undisclosed
Amidst a considerable range of vendors that took part in the official RFP process, Apptension stood out. Its proposal resonated seamlessly with Cannabis Company's prerequisites, leading the client to entrust their project to Apptension's proficient team of front-end developers. The objective was to develop a front-end solution for an internal business management tool, and the client is optimistic about the journey ahead with Apptension.
Bettina Huang Head of E-Commerce at Contemporary Art Retailer
5.0★
eCommerce Development Review from Bettina Huang
A contemporary art retailer initially enlisted Apptension to create its MVP, which was successfully launched in May 2021. The collaboration expanded into ongoing development and maintenance. The client also collaborated with Apptension on a distinct UX research project. Adhering to tight schedules and budget constraints, Apptension adeptly delivered a complex product, showcasing its commitment and capability. (Verified via email)
Sinead Catney Senior Interactive Producer at The Mill
4.7★
Software Development Review from Sinead Catney
The Mill asked Apptension to create a CMS that manages the client's app and website. The CMS handles diverse app components, including a huge gallery, localized content, and interactive user-focused copy. The product boasts eight engaging challenges and rewards, interactive gameplay, and a shareable filter. The platform integrates dynamic gallery and text elements, all managed through the CMS. Through the agency's ongoing maintenance support, the collaboration was extended. (Verified via email)
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
Experience expert-level web and software development services complemented by full-cycle search engine optimization and pay-per-click advertising strategies. Our comprehensive approach ensures maximum online visibility and success for your business...
Top Services:
Web Development
WordPress Website Design
Web Design
Digital Marketing
SEO
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Location
London, United Kingdom
Number of Employees
Under 49
Average Hourly Rate
$50/hr
Minimal Budget
$10,000 - $25,000
Montenegro Systems Services
Web Development
WordPress Website Design
Web Design
Digital Marketing
SEO
PPC
CRO
Digital Strategy
Design Services
Software Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Vahue is an AI transformation consultancy and engineering company that helps startups and scaling enterprises become AI-native through team augmentation, workforce training, and enterprise AI systems. The company combines AI-native engineering talent, practical upskilling programs, and custom AI solutions to...
Top Services:
AI Development
Staff Augmentation
Software Development
SEO
Web Development
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Location
London, United Kingdom
Number of Employees
Under 49
Average Hourly Rate
$50/hr
Minimal Budget
$10,000 - $25,000
Vahue Services
AI Development
Staff Augmentation
Software Development
SEO
Web Development
Mobile App Development
Web Design
Branding
eCommerce Development
Customer Support
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
We dont just develop applications; we build lasting partnerships that evolve software to keep our clients competitive and innovative. Since 2009, MobiDev has helped over 400 businesses in the US, Canada, Europe, and Israel build, modernize, and scale their products for todays dynamic market...
Top Services:
Software Development
Mobile App Development
Web Development
Web Design
VR/AR
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Location
London, United Kingdom
Number of Employees
250 - 499
Average Hourly Rate
$45/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
14 Projects Listed
MobiDev Services
Software Development
Mobile App Development
Web Development
Web Design
VR/AR
UI/UX Design
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
SMS Group
Secure Group
ComCash
SmartTab
JustEnergy
MediaLogix
GrowthHackers
eBooks.com
Pitapat
Qualaroo
Data sourced from the agency's DesignRush profile
MobiDev Reviews & Testimonials
Raymond Ferrara Review from Google
5.0★
Raymond Ferrara's Review Sourced from Google
I have retained Mobidev on three different projects over a period of four years. Mobidev was and is an excellent technical partner in all respects.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
We create digital products and grow with our partners!
Rocketech is a software development company collaborating with 100+ Middle and Senior level IT and business professionals and specialising in analytics-driven web and mobile development. Our team has released 150+ products for 100+ startups and enterprises...
Top Services:
Mobile App Development
Web Development
Software Development
Blockchain
UI/UX Design
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Location
London, United Kingdom
Number of Employees
50 - 99
Average Hourly Rate
$30/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
14 Projects Listed
Rocketech Development Services
Mobile App Development
Web Development
Software Development
Blockchain
UI/UX Design
Digital Services
Managed Services
Market Research
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Walmart
Unilever
Vodafone
Saudi Aramco
IQ Option
HAYS
McKensey & Company
DBS
Aleta Planet
Halyk Bank
Data sourced from the agency's DesignRush profile
Rocketech Development Reviews & Testimonials
Andrey Bezsonov Lead at Absolute Live Gaming
5.0★
Web Development Review from Andrey Bezsonov
We tasked Rocketech with building a roulette system that could live-stream game results directly from an offline casino. There were 3 iterations of the project. The solution has mobile and web versions, supports more than 30 integrations, and provides different monetization channels.Overall, we saved 9 times the budget, while getting high-quality services. The platform handles more than 20K players worldwide and 2 million bets a year. Weve been successful on the market for more than 5 years.
Victoria Oros CEO at Zuzan Global Soultions
5.0★
Software Development Review from Victoria Oros
ROCKETECH helped us set up the development of our scheduling service. Professional developers, great support, good communication and synchronization with the core team.What was it about the company that you didn't like, what should they do better?Duration of recruiting process, good developers is hard to find good if you can make it faster in few days Coaching of Product owner more deeply
Ainar Abdrakhmanov CEO & Founder at Babystep TV
5.0★
Design Services Review from Ainar Abdrakhmanov
Babystep is a Learning Management Platform (LMS) for parents who want to implement innovative teaching methods into their kids' learning curve. The platform connects parents to learning experts and provides accessible consults all over the world. The website combines the functionality of a social media and marketplace, serving as a ground for communication, blogging, and service exchange.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
At RichestSoft, we don't just build apps; we create seamless digital experiences that automate businesses. As a leading Mobile App and Web Development Company, we partner with visionary companies to bring their ideas to life, blending their vision with our cutting-edge technical expertise to spark future...
Top Services:
eCommerce Development
Web Development
Mobile App Development
Software Development
Blockchain
Show more
Location
London, United Kingdom
Number of Employees
250 - 499
Average Hourly Rate
$20/hr
Minimal Budget
$10,000 - $25,000
Portfolios Count
9 Projects Listed
RichestSoft Services
eCommerce Development
Web Development
Mobile App Development
Software Development
Blockchain
AI Development
VR/AR
Software Testing
Wearables
Cloud Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
JIB ROADSIDE ASSISTANCE
Rod Foster
Germany-Chat.com
Pools Magnic App
MeowChowNow
Silvia Berlain
Glitter Dating App
JCA Food App
Gift3R
Data sourced from the agency's DesignRush profile
RichestSoft Reviews & Testimonials
Lathan Ashton IT Systems Architect at Partners in Performance International
5.0★
Web Development Review from Lathan Ashton
RichestSoft was tasked with taking our existing templates, upgrading them to the latest version of our CMS, and deploying them to a staging environment. They also updated the designs for all subsections of the site. The site is fairly generic, consisting of static pages with links from the homepage to product descriptions, case studies, and more. Our team can easily log into the CMS and update case studies without needing a web developer, which has been a huge advantage. Our primary concern was the seamless conversion of our old templates, and RichestSoft handled this flawlessly. They even suggested ideas like making the site multilingual, though we only needed an English version, so it wasn’t necessary in our case.
Robbie Hart Founder at C4 Belts
5.0★
Web Development Review from Robbie Hart
The website now has a more modern and appealing feel, and we've noticed an increase in the number of visitors since working with RichestSoft. They effectively leverage their technologies, and their communication and timeliness have been satisfactory throughout the project. Our business is centered around land development and industrial projects, supported by a team of IT professionals that manage the technology driving our operations. Our mission is to provide quality and satisfaction by utilizing our knowledge, experience, and ambition to meet and exceed our clients' expectations.
James Shehan IT Director at InventRight
5.0★
Web Development Review from James Shehan
RichestSoft consistently delivered on a complex and demanding project, handling all tasks with efficiency. Whenever any bugs or issues surfaced on the site, they promptly resolved them. While there have been occasional communication challenges, none of these have affected the high-quality and cost-effective service they provide.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews