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 × Finance × $50,000 & Up ×Clear Filters
  • Itransition

    VerifiedVerified by the DesignRush team for authenticity and credibility.

    Turning Software Ideas Into Reality

    Itransition specializes in assisting startups and medium to large scale businesses with their software solution needs. Our range of services encompasses the entire development lifecycle, from initial business process inquiry and modeling to comprehensive systems engineering...

    Top Services:

    • Software Development
    • IT Services
    • Business Consulting
    • eCommerce Development
    • Cloud Consulting
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    8 Projects Listed

    Itransition Services

    • Software Development
    • IT Services
    • Business Consulting
    • eCommerce Development
    • Cloud Consulting
    • Big Data Analytics
    • VR/AR
    • Mobile App Development
    • Web Design
    • ERP Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • PayPal
    • Adidas
    • Expedia
    • Ebay
    • Philips
    • PepsiCo
    • Xerox
    • LISI AEROSPACE
    • HAI Group
    • Anybill
    Data sourced from the agency's DesignRush profile

    Itransition Reviews & Testimonials

    • Robert Hager
      Robert Hager Chief Business Analyst at Simpson Strong-Tie
      5.0★

      Software Development Review from Robert Hager

      Itransition carried out the entire software testing process without a single delay. Despite the remote cooperation, the company ensured ceaseless communication, which indicates a high level of the team’s professionalism and organization.

    • Jimmy Carlisle
      Jimmy Carlisle Director of Audit at Dixon Hughes Goodman LLP
      5.0★

      Software Development Review from Jimmy Carlisle

      We needed an in-depth upgrade of the legacy auditing system. We chose Itransition because they swiftly responded to our project requirements and had relevant expertise. The team helped us decide on the solution’s tech stack and designed the new architecture, migrated legacy data, developed new features, and customized the software with extensions. We got a powerful and user-friendly auditing system and were very impressed with the Itransition’s dedication and attention to detail.

    • Shoshana Parker
      Shoshana Parker Senior Computational Biologist at SBH Health System
      5.0★

      Software Development Review from Shoshana Parker

      We enjoyed working with Itransition. We needed a solution for transferring health records from our EHR into the data warehouse without losses. We chose Itransition for their experience, portfolio, and past clients’ references, and the team fully met our expectations. They built a custom ETL tool that increased our visibility into clinical data and helped us spot inefficiencies in patient workflows. Needless to say, they also delivered it on time and budget.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Solving complex problems with design and technology since 2005.

    We create digital products that streamline operations, grow your audience, and boost business success. Partnering with visionary brands, we transform ideas into impactful solutions using innovative design and technology. Discover how our Software Development expertise can elevate your next project...

    Top Services:

    • Web Development
    • Web Design
    • Mobile App Development
    • UI/UX Design
    • Software Development
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    250 - 499
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    24 Projects Listed
  • Codal

    VerifiedVerified by the DesignRush team for authenticity and credibility.Award WinnerRecipient of a Best Design Award for outstanding work.
    Accelerating growth through cutting-edge, data-driven strategies and solutions

    Codal is an award-winning design and development consultancy helping enterprises solve complex challenges and accelerate growth with data-driven digital solutions. Our global team delivers expertise in digital transformation, eCommerce, UX/UI, product strategy, analytics, and AI...

    Top Services:

    • Web Development
    • eCommerce Development
    • Software Development
    • Web Design
    • UI/UX Design
    • Show more
    Location
    Lincoln, United Kingdom
    Number of Employees
    250 - 499
    Average Hourly Rate
    $145/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    7 Projects Listed
  • Smartym Pro is a full-cycle development company specialized in mobile application and enterprise web development. Company has strong development culture and focuses on innovative solutions, using cutting edge technologies and frameworks. Smartym Pro is located in Eastern Europe and consists primarily of...

    Top Services:

    • Software Development
    • Mobile App Development
    • Staff Augmentation
    • Blockchain
    • IT Services
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    50 - 99
    Average Hourly Rate
    $45/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    9 Projects Listed
  • Global Software Engineering Firm

    DataArt - Your Partner for Progress in the Digital Age...

    Top Services:

    • Software Development
    • UI/UX Design
    • AI Development
    • Mobile App Development
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $60/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    12 Projects Listed
  • Sports Betting Software Development Company | Sports Betting Solution

    Sports Betting Soft is a leading iGaming technology provider delivering tailored sports betting and casino software solutions for both startups and established operators. We specialize in building innovative, reliable, and high-performance platforms designed to meet unique client needs and exceed in...

    Top Services:

    • Mobile App Development
    • Graphic Design
    • eCommerce Development
    • Web Development
    • Blockchain
    • Show more
    Location
    Borehamwood, United Kingdom
    Number of Employees
    50 - 99
    Average Hourly Rate
    $35/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    10 Projects Listed
  • Paving the way for a thriving digital society

    Paving the way for a thriving digital society...

    Top Services:

    • Digital Services
    • Mobile App Development
    • Digital Strategy
    • Product Design
    • UI/UX Design
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    250 - 499
    Average Hourly Rate
    $75/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    17 Projects Listed
  • A global AI-first software firm focused on transforming tech challenges into business successes

    Sombra is a global AI-first software development and AI consulting partner. With 400+ experts across the US, Europe, Latin America, Canada, India, and the Middle East, we design, build, and deliver IT solutions in AI, financial services, healthcare, e-commerce, energy, logistics, and...

    Top Services:

    • AI Development
    • Software Development
    • Mobile App Development
    • Cloud Consulting
    • Big Data Analytics
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    250 - 499
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    7 Projects Listed
  • Supercharge - Innovating Digital Product Development

    At Supercharge, we partner with our clients to turn disruption into opportunity by creating transformative digital solutions. With over 200 digital experts across New York, London, Amsterdam, Helsinki, Vienna, and Budapest, we develop digital strategies, design delightful interfaces, and build robust software...

    Top Services:

    • Software Development
    • AI Development
    • Digital Services
    • Product Design
    • Mobile App Development
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    100 - 249
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    6 Projects Listed
  • Senior embedded Python teams for data, AI & SaaS

    Python-first staff augmentation for SaaS, data engineering & AI/ML. Senior embedded engineers, CVs in 24-48 hours. No freelancers...

    Top Services:

    • Software Development
    • Staff Augmentation
    • Mobile App Development
    • Web Development
    • Big Data Analytics
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    7 Projects Listed
  • Globally Recognized Digital and Engineering Solutions Partner.

    Named Best AI Company and Software Development Company by The Netty Awards, Opinov8 is a global technology firm with development hubs across the United States, Europe, and Egypt...

    Top Services:

    • Software Development
    • Mobile App Development
    • UI/UX Design
    • Web Development
    • Big Data Analytics
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    250 - 499
    Average Hourly Rate
    $42/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    3 Projects Listed
  • AI led Digital Engineering for the Connected Enterprise.

    Ignitho is acclaimed as one of the premier Software Development Companies in New York, USA. We specialize in delivering high-quality software development services to enterprises, employing a Frugal Innovation methodology that emphasizes achieving more while optimizing resources. Our approach prioritizes...

    Top Services:

    • Big Data Analytics
    • IT Services
    • Business Consulting
    • AI Development
    • DevOps Consulting
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    100 - 249
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    3 Projects Listed
  • Infinite Possibilities with Technology

    Kellton is a publicly listed, CMMI Level 5, and ISO 9001:2015 certified global company, providing cutting-edge AI and digital transformation solutions and services in strategy, consulting, digital, and technology...

    Top Services:

    • Big Data Analytics
    • Software Development
    • AI Development
    • Mobile App Development
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    8 Projects Listed
  • AI That Transforms Businesses

    Mindera Software Craft specializes in crafting robust IoT solutions through high-performance, scalable software systems. From product development and performance testing to technology consultancy, we provide end-to-end services tailored to your needs...

    Top Services:

    • Software Development
    • Software Testing
    • IoT
    • DevOps Consulting
    • UI/UX Design
    • Show more
    Location
    Leicester, United Kingdom
    Number of Employees
    250 - 499
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
  • Creating Mobile Apps That Digitally Transform Business

    Sugar Rush is a Mobile App Agency that provides mobile app development services to clients in the UK, Ireland, Europe, and the US. They have received recognition as the "UK App Agency of the Year" and have won 'App of The Year' awards for three consecutive years in Northern Ireland...

    Top Services:

    • Mobile App Development
    • Web Design
    • Software Development
    • VR/AR
    • Show more
    Location
    Belfast, United Kingdom
    Number of Employees
    Under 49
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    1 Project Listed
  • Build your own high-performing agile team!

    Teqnovos is a leading mobile and web app development company that caters to the technological needs of a wide variety of businesses...

    Top Services:

    • Software Development
    • Web Development
    • Mobile App Development
    • Blockchain
    • UI/UX Design
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    100 - 249
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    1 Project Listed

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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

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We monitor listings regularly; outdated agencies are removed.

Agencies verified
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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.