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.

Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.

United Kingdom × Government × $10,000 - $25,000 ×Clear Filters
  • AI-Native, Business-Ready Development Services. Engineered to Scale

    At Mobcoder AI, certified engineers and data scientists help you identify high-ROI AI use cases and operationalize them at scale. With 150+ deployments, CMMI Level 3 certification and 12+ years of experience, we build AI solutions governed by design and model-agnostic frameworks...

    Top Services:

    • Mobile App Development
    • AI Development
    • Software Development
    • Web Development
    • VR/AR
    • Show more
    Location
    Cobham, United Kingdom
    Number of Employees
    100 - 249
    Average Hourly Rate
    $55/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    14 Projects Listed
  • Mobile App Development Company

    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
    • Show more
    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
  • Making functional and user friendly software's for humans

    Mobirevo is a Leading custom software development agency focused on web, mobile app development & saas application development, Enterprise resource planning, and management software (ERP software development). We are a team of incredible Design & Agile software development experts in all major technology...

    Top Services:

    • Web Design
    • UI/UX Design
    • Web Development
    • Wearables
    • Software Development
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    Under 49
    Average Hourly Rate
    $200/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    2 Projects Listed
  • Building complex SaaS created to scale operations and workflows

    UITOP is a software development and product design agency for B2B SaaS, ERP, CRM, and business software. We improve usability, modernize legacy systems, and build scalable products that are easier to use and grow...

    Top Services:

    • Software Development
    • Product Design
    • Graphic Design
    • UI/UX Design
    • Mobile App Development
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    50 - 99
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    14 Projects Listed
  • Create - Inspire - Deliver

    We boost businesses with expert AI software development and web solutions, offering products and consulting across industries like automotive, IT, and healthcare etc. Partner with us to grow in the digital era using innovative technology...

    Top Services:

    • AI Development
    • Mobile App Development
    • Software Development
    • Staff Augmentation
    • Software Testing
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    50 - 99
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    17 Projects Listed
  • Developing the Future - Propelling Business Growth with Technology

    Vizion Systems specialises in developing Quality cloud based software applications for businesses using the very latest Cloud technologies. Applications are typically compatible with any device; PC, Laptop, Tablet or Mobile and operating system/browser. Moreover, Vizions advanced Account Management and...

    Top Services:

    • Software Development
    • UI/UX Design
    • Mobile App Development
    Location
    London, United Kingdom
    Number of Employees
    50 - 99
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000
  • Award-Winning AI Consultancy & Custom Software Development Company In UK & USA

    Geeks Ltd is an award-winning AI consultancy and custom software development company. With 18+ years of experience and 1,500+ projects delivered, we help business leaders in Transport & Logistics, Construction, Manufacturing, Energy, Education, and Government harness AI to improve efficiency...

    Top Services:

    • Software Development
    • AI Development
    • Mobile App Development
    • Software Testing
    • ERP Consulting
    • Show more
    Location
    Sutton, United Kingdom
    Number of Employees
    50 - 99
    Average Hourly Rate
    $90/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    12 Projects Listed
  • AI-First Company for Rapid Product Development

    We are global web3.0 Software engineering company making success stories for more two decades with highly motivated and experience teams and a proven agile framework. we prioritize the commercial goal of our customer deliver the highest business value. we are a renowned blockchain app development company in...

    Top Services:

    • Blockchain
    • AI Development
    • Mobile App Development
    • Software Development
    • Web Design
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    100 - 249
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    7 Projects Listed
  • Make Your Ideas Fly High With Us.

    Design Zilla is an AI-powered Development Consultancy that enables its customers to use data-driven products and solutions to receive the promised value and growth in ROI...

    Top Services:

    • Software Development
    • AI Development
    • Blockchain
    • Mobile App Development
    • Web Development
    • Show more
    Location
    Dundee, United Kingdom
    Number of Employees
    Under 49
    Average Hourly Rate
    $199/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    1 Project Listed
  • thoughtbot is your expert partner for product design and development.

    20+ years over 1,000 clients! thoughtbot is a design and development company that helps clients lead the way through better products, faster teams, and stronger growth...

    Top Services:

    • Software Development
    • Web Development
    • Product Design
    • Web Design
    • Mobile App Development
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    50 - 99
    Average Hourly Rate
    $175/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    8 Projects Listed
  • Expert in Developing Custom Software, Mobile Apps, and Web Apps for Any Industry Worldwide| B2B

    Softexpoit's team of experts combines technical expertise and creativity to develop custom software, mobile app, and web app, backend, mac/windows solutions that meet your specific business/official needs.We understand that every business is different, which is why we offer customized solutions...

    Top Services:

    • Mobile App Development
    • Software Development
    • Web Development
    • IoT
    • Software Testing
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    Under 49
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    8 Projects Listed
  • Leading Branding & MVP Studio for Startups in London

    Rattlesnake Group is a London-based boutique studio helping startups design, build, and launch MVPs through integrated branding, product design, and software development...

    Top Services:

    • Web Development
    • Web Design
    • Branding
    • Product Design
    • Digital Marketing
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    8 Projects Listed
  • We do AI.

    Digica is a leading provider of Artificial Intelligence consultancy services. Digica is a global provider of software solutions that is at the front of the transformation ushered in by artificial intelligence. Our work is making a significant impact not just on our customers' businesses but also on the world...

    Top Services:

    • AI Development
    • Software Development
    • IoT
    • Staff Augmentation
    • Business Consulting
    • Show more
    Location
    Wales, United Kingdom
    Number of Employees
    100 - 249
    Average Hourly Rate
    $80/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    5 Projects Listed
  • Best Custom App & AI Development Agency in UK

    At Evangelist Apps, we go beyond app development, offering IT consultancy and comprehensive digital solutions that are customized to your business goals. Our goal is to deliver effective, customized strategies that fuel growth and align with industry standards...

    Top Services:

    • Mobile App Development
    • UI/UX Design
    • IT Services
    • Staff Augmentation
    • DevOps Consulting
    • Show more
    Location
    Fleet, United Kingdom
    Number of Employees
    50 - 99
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    4 Projects Listed
  • User-led digital experiences, products and apps

    Browser was founded in 2008 and built upon the belief that UX design and technology are synonymous, aligning both UX design and technology has enabled us to advance and become one of the only agencies to truly understand and offer expertise in this area...

    Top Services:

    • UI/UX Design
    • Web Design
    • Digital Strategy
    • Web Development
    • Software Development
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    Under 49
    Average Hourly Rate
    $125/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    4 Projects Listed
  • Converting app ideas to reliable, scalable and resilient products

    . We conduct our business in a standard, professional, and effective manner. We do this by ensuring that our clients and stakeholders come along with us. Our staff is varied in terms of skill sets, yet united in purpose. The Exquis Apps crew is a force to be reckoned with. We work with you to create the best...

    Top Services:

    • Mobile App Development
    • Software Development
    • Web Development
    • UI/UX Design
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    50 - 99
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    2 Projects Listed
  • Your AI-Acceleration Partner

    Hodfords is a UK-based technology and AI solutions company, specializing in digital transformation, software development, and AI-powered automation. With over 20 years of experience, we help businesses scale by providing expert development teams, cutting-edge AI solutions, and strategic consulting. Whether...

    Top Services:

    • Mobile App Development
    • Software Development
    • Software Testing
    • AI Development
    • Web Development
    • Show more
    Location
    Brighton, United Kingdom
    Number of Employees
    100 - 249
    Minimal Budget
    $10,000 - $25,000
  • Creativity Unleashed | AI-powered Digital Transformation Partner

    We can bring your idea to life, whether it is design or development you can trust us with your product. We specialize in designing and building app, websites, and SaaS applications. We can take care of everything from scratch all you need is an idea to get started with us...

    Top Services:

    • UI/UX Design
    • Web Development
    • Software Development
    • Mobile App Development
    • WordPress Website Design
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    2 Projects Listed
  • Driving Digital Transformation Through Innovation

    Rendmate is a technology innovation company that transforms bold ideas into cutting-edge digital products. With expertise in AI, blockchain, and enterprise software, we build scalable solutions that accelerate growth and redefine industries...

    Top Services:

    • IT Services
    • Software Development
    • Web Design
    • Business Consulting
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $10,000 - $25,000
  • Don't stand still. Your competitors won't.

    At Cogworks we believe in democratising the web by making powerful digital solutions accessible to all types of buiness. We specialise in bespoke, user-centric websites and applications using the Umbraco CMS, ensuring they are secure, scalable and sustainable. Our mission is to empower businesses with...

    Top Services:

    • Web Design
    • Web Development
    • Digital Strategy
    • UI/UX Design
    • Software Development
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    Under 49
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    2 Projects Listed
  • #1 Reliable Digital Agency

    #1 Reliable Digital Agency.The world's most efficient digital marketing agency, providing a wide range of exclusive services.Tafol Technologies is ranked as one of the best digital marketing agencies in Asia...

    Top Services:

    • AI Development
    • Software Development
    • Blockchain
    • Mobile App Development
    • IT Services
    • Show more
    Location
    Huntington, United Kingdom
    Number of Employees
    100 - 249
    Average Hourly Rate
    $45/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    5 Projects Listed
  • Your next strategic partner.

    Founded in 1998, 3ev is a digital agency based in London and Brighton that builds high-performing products shaped by intelligence and clarity. We act as an embedded extension of your team, connecting product, marketing, and technology to turn complex ideas into scalable systems.Specialising in platforms...

    Top Services:

    • Web Development
    • Web Design
    • Digital Services
    • Digital Strategy
    • SEO
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    Under 49
    Minimal Budget
    $10,000 - $25,000
  • Intentional Experiences

    We provide expert UX consulting with 18+ years proven success. Our multi-disciplinary team delivers product strategy, user research, UX design, training and experience testing. We have offices in Toronto, Ottawa, Canada, New York USA and Cambridge, London, UK...

    Top Services:

    • UI/UX Design
    • Digital Services
    • Product Design
    • Staff Augmentation
    • Market Research
    • Show more
    Location
    Cambridge, United Kingdom
    Number of Employees
    Under 49
    Minimal Budget
    $10,000 - $25,000

Why companies trust DesignRush

Every agency is independently vetted before it can be listed or ranked

1

Identity Check

We verify businesses and reviewer LinkedIn profiles for integrity.

Agencies vetted
129,175+
2

Portfolio Review

We review agency work, case studies, and results to confirm skill.

Applicants rejected
47%
3

Ongoing Audit

We monitor listings regularly; outdated agencies are removed.

Agencies verified
23

Some agencies pay for sponsored placement, clearly labeled and held to the same vetting standards.

See how rankings and monetization work.

Frequently Asked Questions

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.