Scan the leading custom software development companies in the UK that build bespoke solutions and offer specialized software services for various verticals. Compare their portfolios, reviews, expertise, budget, team size and more to find the right team for your next project.
We Vetted The Best United Kingdom Software Development Firms For You
7 Companies-Rankings updated: September 06, 2026
We evaluate every agency on DesignRush according to expertise credentials and client satisfaction ratings. Some placements are 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...
Top Services:
Mobile App Development
Web Development
Software Development
UI/UX Design
Blockchain
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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 View All Reviews
No matter what your niche is, we will help build mobile apps for your business. Choose our best application development company for building apps in any business vertical...
Top Services:
Mobile App Development
Web Development
Software Development
UI/UX Design
AI Development
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Location
Leicester, United Kingdom
Number of Employees
250 - 499
Average Hourly Rate
$25/hr
Minimal Budget
$10,000 - $25,000
Portfolios Count
13 Projects Listed
The NineHertz Services
Mobile App Development
Web Development
Software Development
UI/UX Design
AI Development
IT Services
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Akamai Technologies
Pepsi
Samsung
Casio
Ericsson
Alcatel-Lucent
Adani
Data sourced from the agency's DesignRush profile
The NineHertz Reviews & Testimonials
Zamar Gooden Founder at Soadii
5.0★
Mobile App Development Review from Zamar Gooden
The NineHertz successfully built a social media app for advertising as specified and met all our expectations. Their meticulous, accommodating, and cooperative approach ensured a seamless partnership. In addition to their excellent project management, they also have exceptionally strong technical proficiency. I would strongly suggest this organization for web and app development.
Steve Einzig Founder & CEO at Potsmoking
5.0★
Mobile App Development Review from Steve Einzig
We needed help with a project for cannabis lovers and got recommendations to contact The NineHertz. We are delighted with their developers as they are creative, fast, and professional. We are very happy with the deliverables.
Kari Gaston Founder & CEO at Tripspilot
5.0★
Mobile App Development Review from Kari Gaston
I hired The NineHertz's services to create my Tripspilot project and was amazed with the result. The team has met all the deadlines and exceeded our expectations with their quality work
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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...
Top Services:
Web Development
Software Development
Mobile App Development
UI/UX Design
AI Development
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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 View All Reviews
Magic Code Recipe Developed To Combine Reliability With Innovation.
Custom Software Development Experts...
Top Services:
Software Development
Mobile App Development
AI Development
Web Development
Blockchain
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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 View All Reviews
Brainvire: Your Trusted Partner for Hybrid App Development...
Top Services:
Mobile App Development
Software Development
eCommerce Development
Web Development
Web Design
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Location
Reading, United Kingdom
Number of Employees
1000 & Up
Average Hourly Rate
$25/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
39 Projects Listed
Brainvire Infotech Services
Mobile App Development
Software Development
eCommerce Development
Web Development
Web Design
Big Data Analytics
Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
Southwest Airlines
Fox Sports
Dr Reddy
Trophy – Fabcars
AVATCO INC
HVACDirect
Ajmal Perfumes
Alokozay
Landmark
Alghanim
Data sourced from the agency's DesignRush profile
Brainvire Infotech Reviews & Testimonials
Rose Charlotte Chief Technology Officer at UUUM
5.0★
Mobile App Development Review from Rose Charlotte
Branvire Infotech demonstrates professionalism, a keen eye for detail, and is user-friendly. For an overseas company, effective communication is vital, and it has showcased exceptional prowess in this area. (Verified via email)
Elsa Schneider Lead Project Manager at HKLO
5.0★
Mobile App Development Review from Elsa Schneider
Their ability to understand and meet our requirements has been truly impressive. Their timeliness and capacity to generate accurate estimates were especially instrumental in our success.
Angela Caldwell Chief Project Head at PRTC
5.0★
Mobile App Development Review from Angela Caldwell
Brainvire had a good understanding of the scope and getting the app to function as I wanted. They work very hard and are incredibly patient with me.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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...
Top Services:
IT Services
Staff Augmentation
Software Development
Web Development
Mobile App Development
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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.
Hélène Augemont Head of client support at Perfect Health
5.0★
iPhone Review from Hélène Augemont
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 View All Reviews
Award WinnerRecipient of a Best Design Award for outstanding work.
Dreams Have No Limits In A Digital World
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...
Top Services:
Mobile App Development
Web Development
Software Development
UI/UX Design
IoT
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Location
Dundee, 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 View All Reviews
What are the core specializations of custom software development companies in the United Kingdom?
The core specializations of custom software development companies in the United Kingdom generally center around web/mobile app development and advanced digital technologies. Their expertise extends to AI-powered products, cloud solutions (especially DevOps), feature enrichment, and cybersecurity.
Overall, they provide end-to-end digital transformation solutions and engineer custom platforms and systems that drive competitive advantage and business growth across industries.
How much do software development services cost in the UK?
The cost for software development services in the UK ranges from £25,000 to £120,000 for small businesses. In contrast, large enterprises undertaking extensive digital transformation or building sophisticated, bespoke systems should anticipate costs starting at £80,000 and potentially exceeding £500,000.
For startups or businesses aiming to validate a concept, the initial cost is considerably lower. A minimum viable product (MVP) or a proof-of-concept generally falls within the £5,000 to £30,000 range. The final price is ultimately determined by the project's complexity, the chosen technology stack, the developers’ experience, and the geographical location of the service provider, which impacts their hourly or daily rates.
How do I choose the right United Kingdom software development firm?
To choose the right United Kingdom software development firm, begin by evaluating its portfolio and case studies to make sure they have experience in your required technology stack and niche. Inquire about its process and team structure, to make sure they follow an iterative methodology and that the core development team will be dedicated and accessible for regular communication.
Finally, prioritize a company with good reviews that reflect a track record of robust post-launch support and good collaboration throughout the project.
Do software development companies provide ongoing support?
Yes, software development companies do provide ongoing support, maintenance, and updates after the product launch. This post-launch service is important for fixing bugs, maintaining security, adapting to changing user needs, and making sure the software remains stable and competitive.
How do custom software development companies in the United Kingdom handle project revisions?
Custom software development companies in the United Kingdom predominantly handle project revisions through the Agile methodology. This involves breaking the project into short, iterative sprints, allowing the client to provide feedback and request necessary revisions at the end of each cycle.
This flow is intended to minimize risk and keep the final product aligned with the envisioned concept, rather than waiting until the end for a major change.