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
7 Companies-Rankings updated: August 19, 2026
Every agency featured on DesignRush is vetted for expertise and client satisfaction to support your decision-making. Some listings may be sponsored.
Softermii (https://www.softermii.com/) is an outsourcing/outstaffing company with more than 8 years of experience in web and mobile application development with a team of more than 120 specialists from 6 countries...
Location
London, United Kingdom
Number of Employees
100 - 249
Average Hourly Rate
$45/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
22 Projects Listed
Softermii Services
Mobile App Development
Web Development
Software Development
UI/UX Design
Blockchain
AI Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Dollar Shave Club
Hollar
JibJab
Vidme
HIPAA Video
Onradpad
DogVacay
Cococure
DronBase
Rently
Data sourced from the agency's DesignRush profile
Softermii Reviews & Testimonials
Kwesi Peyna
Owner & CEO at Luciid
5.0★
Web Development Review from Kwesi Peyna
Luciid expresses satisfaction with Softermii's comprehensive capabilities and acknowledges that it excels in all departments necessary for successful project completion. Softermii demonstrates a well-planned process to adhere to deadlines and budgets, delivering a robust project management experience. Luciid also commends Softermii's adeptness in incorporating all necessary elements into the project (Verified via email).
Undisclosed
CTO at Mediconnect
5.0★
Mobile App Development Review from Undisclosed
Softermii impressed us with its willingness and flexibility to work with our internal processes and employees. Through its knowledge and technical expertise, the Softermii team delivered a final product according to specifications. Softermii followed an agile methodology and showcased tremendous flexibility and dedication in ensuring a seamless customer experience. Its team also listened to the instructions well.
Undisclosed
CFO at SmartStart
5.0★
Web Development Review from Undisclosed
Softermii was truly dedicated and committed to the project. We recorded 1,296,000 in-app transactions and connected 3,000 properties to the platform two months after launching the app. Also, we gained around 24,000 subscribers. Softermii was committed to the project with its seamless workflow, support, and professional resources.
Reviews verified by DesignRush and sourced from the agency's profile
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Magic Code Recipe Developed To Combine Reliability With Innovation.
Custom Software Development Experts...
Location
London, United Kingdom
Number of Employees
Under 49
Average Hourly Rate
$35/hr
Portfolios Count
14 Projects Listed
GO ONLINE Services
Software Development
Mobile App Development
AI Development
Web Development
Blockchain
UI/UX Design
Cloud Consulting
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Skanska
eBinaa
Falk&Ross
PZU - Helpdesk system
CEZ Group
Van Pur
GoGift
Asseco
Deutsche Bank
Seeracom
Data sourced from the agency's DesignRush profile
GO ONLINE Reviews & Testimonials
Sebastian Bigaj
Co-Founder at FOLGA
5.0★
Enterprise Review from Sebastian Bigaj
We hired GoOnline to design and develop management software for organizing and managing all the back-end operations, from inventory management to order management.
GO ONLINE developed a functional software that has performed exactly as expected. Their organized project management process was well-organized and straightforward. The team took the time to understand the business’ ideas and was exceptionally easy to work with.
Sylwia Nowińska
Owner at Sfera
5.0★
Software Development Review from Sylwia Nowińska
We decided to create software for diagnostic stations to cover our internal needs and also car diagnostic station software market. GoOnline organized the project well. Their team is doing a great job of continually supporting the platform. Deadlines were met on time and their process were transparent.
Kryspin Slawek
PR Specialist at PZU
5.0★
Enterprise Review from Kryspin Slawek
The team took the time to understand the business’ ideas and was exceptionally easy to work with.
It is worth emphasizing that the project management process was well-organized and straightforward.
GO ONLINE developed a functional software that has performed exactly as expected.
Reviews verified by DesignRush and sourced from the agency's profile
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Imaginary Cloud, boasting over a decade of experience, achieved recognition as one of the Top 100 Fastest Growing Companies and Top 1000 Global Companies in both 2020 and 2021. In 2021, it secured the title of the UK's Top B2B Company...
Location
London, United Kingdom
Number of Employees
50 - 99
Average Hourly Rate
$50/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
7 Projects Listed
Imaginary Cloud Services
Web Development
Software Development
Mobile App Development
UI/UX Design
AI Development
IT Services
Product Design
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
BNP Paribas
Nokia
Sage
Ernst & Young
Remax
TravelWiFi
Learninghubz
Elsa Speak
Waystone
JingaLife
Data sourced from the agency's DesignRush profile
Imaginary Cloud Reviews & Testimonials
Anonymous
CEO at Industrial Software Company
5.0★
Mobile App Development Review from Anonymous
The solution has been well-received by customers. Thanks to the team’s expertise and determination, we were able to leverage emerging technologies such as quasi-AR. Their responsive and collaborative approach made it easy to work closely with stakeholders, and their insights have consistently brought added value to the project.
Anonymous
Former partner at Former Partner, Design Agency
5.0★
Web Development Review from Anonymous
Imaginary Cloud consistently delivers high-quality work while meeting all client requirements. Their team is attentive to detail and readily adapts to any requested changes. They’re a pleasure to collaborate with and have proven to be reliable, trustworthy partners.
Anonymous
CEO at Topgim
5.0★
eCommerce Review from Anonymous
Imaginary Cloud built an intuitive, user-friendly website that has helped us attract new partners. Their team demonstrates strong project management skills, maintaining clear communication and consistently meeting deadlines. Their expertise and capabilities have made this collaboration a truly valuable partnership.
Reviews verified by DesignRush and sourced from the agency's profile
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Venture Infrastructure for Scalable Value Creation
SoftTeam is an international IT services and talent-augmentation company operating across locations such as Ukraine, Estonia, Poland, Austria and the United Kingdom. The firm provides models such as IT staff augmentation, dedicated teams and out-staffing to support businesses across industries including...
Location
London, United Kingdom
Number of Employees
100 - 249
Average Hourly Rate
$30/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
10 Projects Listed
SoftTeam Services
IT Services
Staff Augmentation
Software Development
Web Development
Mobile App Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Sport Life
DOBROBUT
FINANCIAL ADVISOR
LUKOIL
SPORTEQUIP
FAST PACK
DOBROGARD
Institute of cell therapy
SUPERLUDI
Data sourced from the agency's DesignRush profile
SoftTeam Reviews & Testimonials
Jeremy DELREY
CTO at A-Pharm
5.0★
eCommerce Development Review from Jeremy DELREY
We decided to create an Online shop for selling medicines.
So we started with negotiations of the concept and the collection of the requirements. Then team provided us with the technical description of the store and a few mockups of it. After approving everything they start creating a solution.
I think that we're about 10-12 people in the team who worked with us.
We launched shop and receiving profit from it, I think that's the best outcome.
We decided to develop a mobile application for our customers.
Firstly we Googled different companies and then after the communicating with 7 different companies, we decided to work with sst. The main request from our company was to create the best user interface and functionality.
Results came immediately, I am as a head of client support saw results more than other departments. Thousand positive feedback from the customers regarding the application and how it works.
Victor R
Head of Marketing at LeadHealth
5.0★
Web Development Review from Victor R
We had a problem with a tremendous corporate website, which was very bad and not working. So we decided to create a new corporate website. I have asked a few marketing specialists to give us a contract of good It companies, also find good reviews about SST.
As a result, we finally have a fantastic, well-designed, and working website. Also, the traffic of new customers increased by 200%.
Also, SST has a suitable methodology for providing the project results in real-time.
Reviews verified by DesignRush and sourced from the agency's profile
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Why not try some top quality UK delivery. Zudu is an award-winning, industry-leading, software development agency based in London and Dundee. Our specialist team create jaw-dropping digital experiences and develop successful products...
Location
London, United Kingdom
Number of Employees
Under 49
Average Hourly Rate
$50/hr
Minimal Budget
$10,000 - $25,000
Portfolios Count
20 Projects Listed
Zudu Services
Mobile App Development
Web Development
Software Development
UI/UX Design
IoT
Product Design
Digital Services
SEO
PPC
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
NHS
Asahi
Weir
Wood
Autins
Aviagen
Scottish Social Services Council
Restructa
LAT Water
University of Dundee
Data sourced from the agency's DesignRush profile
Zudu Reviews & Testimonials
Scott Taylor
Training and Development Instructor at Wiltshire and Swindon Fire Authority
5.0★
Web Development Review from Scott Taylor
Zudu provided me with a bespoke app for our fire safety business. It was a simple, clear and straight forward process which was completed quickly.
I intend on using them further!
James Cadwaladr
Co-Founder at Invive Resourcing
5.0★
Product Design Review from James Cadwaladr
I have been extremely impressed with Zudu’s product development, ongoing and almost immediate support at all times and also genuine understanding and commerciality of both Rik and James which has meant being able to easily translate concepts into product. Excellent UX, UI and Customer support. We look forward to a long and fruitful relationship.
Danny Kelly
Harm Reduction Manager at Hillcrest Futures (Previously Cair Scotland)
5.0★
Web Development Review from Danny Kelly
Zudu supported our organisation to develop a web app to benefit local staff working with people who use substances. Zudu went above and beyond to understand the concept by speaking with staff and visiting our service to see where the app would have the most impact. It was clear Zudu were motivated and passionate about what they do and so for us were the obvious choice for this project.
Reviews verified by DesignRush and sourced from the agency's profile
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Digital Heroes is a full-stack Shopify development and digital marketing agency founded in 2017. We specialize in building high-converting ecommerce stores, Shopify custom development, web design, SEO, and brand growth strategies. With 2,000+ stores built and $10M+ in client revenue generated, we are a...
Location
London, United Kingdom
Number of Employees
Under 49
Average Hourly Rate
$25/hr
Minimal Budget
Under $1,000
Portfolios Count
23 Projects Listed
Digital Heroes Services
Software Development
Web Development
Mobile App Development
WordPress Website Design
Branding
eCommerce
eCommerce Development
SEO
Web Design
AI Development
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
EMANI Beauty
Rizz Pickleball
Evada UAE
JustDerma
Noble Paris
Neurvana Ohana
Big Game Sports
ToxVeto
Fresh Water Pool Supply
Panacheeza
Data sourced from the agency's DesignRush profile
Digital Heroes Reviews & Testimonials
Brent Beardslee (Belish)
Review from Google
5.0★
Brent Beardslee (Belish)'s Review Sourced from Google
A terrific comics and game store. Comics and Manga up front with Warhammer 40k, Magic, D&D and others in the back. They have a good selection od Warhammer 40k models as well as Age of Sigmar.
Sylvie Dale
Review from Google
5.0★
Sylvie Dale's Review Sourced from Google
Stopped in for some Magic card boosters and was greeted warmly by all staff and the owner, who gave me a rundown of upcoming gaming events at the store. I was blown away by the complex schedule they keep - free play, draft play events, and more. The owner gives freely of his time to provide those events, and it's clear he cares.
Perry
Review from Google
1.0★
Perry's Review Sourced from Google
Extremely judgemental, sad, employees. I recently moved to town and came in after work in my business attire. After getting a confused look from the associate up front, (not even a greeting). I started browsing, but everytime I looked up, I was being stared at which made me slightly uncomfortable. I moved towards the back and an associate there said hello, we had a short chat about comics and trading cards but they were rude to a younger customer that came in, it was unwarranted and I'm assuming either this is the employee's normal behavior or an elitist owner. I also couldn't help but wonder if the associate was under some sort of influence. After noticing the trading card prices are exponentially higher than I'm used to seeing in bigger cities, where that sort of pricing would make more sense; I took my leave not purchasing anything feeling underwhelmed. As I passed the associate up front, they still did nothing but continue to stare. Are they not used to the professional community? The store is tidy and organized but cluttered and the atmosphere/vibe is cold. Also not much of a variety for a hobby store. I would much rather take the trip to Milton Freewater to the hobby store there or even Gamestop would be a better choice. I do not see myself returning in the future.
Reviews verified by DesignRush and sourced from the agency's profile
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We are Tech Alchemy. We are passionate about start-ups...
Location
London, United Kingdom
Number of Employees
250 - 499
Average Hourly Rate
$50/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
1 Project Listed
Tech Alchemy Services
Web Design
Web Development
Blockchain
AI Development
Mobile App Development
Business Consulting
Software Development
VR/AR
Product Design
Branding
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Ocean Bottle
EthoVentures
W3 Sports
Mercore Group Ltd
Darabase
Callahan's Mountain Lodge
Bando
My Bricks
Hyper SQ
MovieCoin
Data sourced from the agency's DesignRush profile
Tech Alchemy Reviews & Testimonials
Marcos Sargen
Review from Google
5.0★
Marcos Sargen's Review Sourced from Google
Tech Alchemy is building KTO’s centralized exchange and, so far, it’s been quite pleasant with the UI, visuals, and functionality. Can’t wait for the beta test to test what they’ve been working hard on for months!
Flora Castle
Review from Google
1.0★
Flora Castle's Review Sourced from Google
Based on the experience I had: poor communication and customer service. Don’t seem keen to take on a challenge and take a long time to respond. I was surprised by this after reading other good reviews for this company.
Martin Smith
Review from Google
5.0★
Martin Smith's Review Sourced from Google
Friendly and very knowledgeable team of developers. Very impressed with everything they've produced, can't recommend highly enough!
Reviews verified by DesignRush and sourced from the agency's profile
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