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

All agencies on DesignRush undergo evaluation based on professional expertise and verified client reviews. Please note that certain placements are paid partnerships.

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  • Apptension

    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
    • Show more
    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
      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
      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
      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
    Visit Website View Profile
    4.7 4.7 (6)
    4.9 4.9 (18)

  • BSS Commerce

    Full-Service E-commerce Development Company

    An ecosystem for B2B/ B2B2C websites on multiple platforms with robust technology and a customer-oriented mindset...

    Top Services:

    • eCommerce Development
    • Web Development
    • Software Development
    • Web Design
    • UI/UX Design
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    250 - 499
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    10 Projects Listed

    BSS Commerce Services

    • eCommerce Development
    • Web Development
    • Software Development
    • Web Design
    • UI/UX Design
    • IT Services
    • Mobile App Development
    • Software Testing
    • Cybersecurity
    • WordPress Website Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • PixePrint
    • OlogsBabyArtikel
    • HoolaHoola
    • Dippytee
    • Screenshotsinc
    • Frameless Hardware Company
    • Skandiastyle
    • Café Du Cycliste
    • Parfymonline
    • Supersports Vietnam
    Data sourced from the agency's DesignRush profile

    BSS Commerce Reviews & Testimonials

    • Anthony G
      Anthony G Review from Google
      5.0 ★

      Anthony G's Review Sourced from Google

      It's the best app to sell Multichannel on Shopify. Otherwise you would have to pay 2000$ for Shopify PLUS. Support and Features are Great! Thats a company you want to work with together as a B2B seller! Especially thank you Jonas!

    • James Batson
      James Batson Review from Google
      5.0 ★

      James Batson's Review Sourced from Google

      Great company with excellent customer service. Helped us solve an issue on our Magento 2 website, highly recommend to anyone looking for Magento plugins or development.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    5.0 5.0 (8)

  • JDD Agency

    Creating Digital Solutions That Help Businesses Grow.

    JDD Agency is a digital agency that values design craftsmanship. We excel in scenarios that demand critical thinking and have a strong passion for data, perhaps more than most...

    Top Services:

    • Web Design
    • Web Development
    • Software Development
    • Mobile App Development
    • Show more
    Location
    Southampton, United Kingdom
    Number of Employees
    Under 49
    Average Hourly Rate
    $54/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    1 Project Listed

    JDD Agency Services

    • Web Design
    • Web Development
    • Software Development
    • Mobile App Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • The Garden Society
    • Electrical Supermarket
    • Rolatube Technology
    Data sourced from the agency's DesignRush profile

    JDD Agency Reviews & Testimonials

    • Chris Witham
      Chris Witham Review from Google
      5.0 ★

      Chris Witham's Review Sourced from Google

      Our ongoing relationship with JDD has been instrumental in realising our efficiency goals within our business. If you need a full software development solution or just process efficiencies, I would thoroughly recommend Jamie and the team.

    • Matthew Cannaby
      Matthew Cannaby Review from Google
      5.0 ★

      Matthew Cannaby's Review Sourced from Google

      Jamie and the team have been amazing at creating our websites (we have used them twice) They are very passionate and knowledgeable about what they do and this shows through in the top quality work they produce. They are always available and willing to work around our needs. Highly recommend

    • Heads Up
      Heads Up Review from Google
      5.0 ★

      Heads Up's Review Sourced from Google

      JDD supported us through the start up of our new business, they took on our ideas and implemented them better than we had hoped. Jamie was very supportive and helped us develop understanding with how to edit and gain feedback from our website. We have had some excellent feedback about our website and we are so pleased with the results. We would thoroughly recommend JDD Agency. Thank you very much.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    5.0 5.0 (21)

  • Coderus

    Coderus - Building Smart Code Solutions for the Future

    Coderus is a leading software and app development company based in the UK, and we provide services to start-ups, medium businesses, and large blue-chip enterprises globally...

    Top Services:

    • Mobile App Development
    • IoT
    • Software Development
    • Software Testing
    • Design Services
    • Show more
    Location
    Martlesham, United Kingdom
    Number of Employees
    Under 49
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    5 Projects Listed

    Coderus Services

    • Mobile App Development
    • IoT
    • Software Development
    • Software Testing
    • Design Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • INEOS Team UK (America's Cup)
    • Bowers & Wilkins
    • ELGA Veolia
    • Land Rover BAR
    • Frontier Silicon
    Data sourced from the agency's DesignRush profile

    Coderus Reviews & Testimonials

    • Petra Napthine
      Petra Napthine Review from Google
      5.0 ★

      Petra Napthine's Review Sourced from Google

      I completed my work experience from the 8th - 12th of July at Coderus. I learnt lots during the week and everyone was very helpful and friendly. I'd recommend this to anyone interested in app development as its a great way to learn about the industry.

    • Emil Aby
      Emil Aby Review from Google
      5.0 ★

      Emil Aby's Review Sourced from Google

      I attended work experience at Coderus from 1st-5th July. It was a great experience, i particularly enjoyed creating my own app. Would definitely recommend.

    • Daniel Healy
      Daniel Healy Review from Google
      5.0 ★

      Daniel Healy's Review Sourced from Google

      Coderus are an excellent team. I've worked with them on 5 projects now, all of which were clearly laid out, tracked and delivered, from start to finish. They're always happy to work to our expectations, cater to the specific needs of the business, and provide training on the tools they create upon delivery.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    5.0 5.0 (23)

  • Massive Startup

    Business Starter Packs | Digital Marketing | Design

    Massive Startup was created to support entrepreneurs scale their business. We are not selling quick formulas for success or secret ways of growing your business. In our opinion success comes with honesty, a good product or service, and hard work. Simple...

    Top Services:

    • WordPress Website Design
    • Digital Marketing
    • Branding
    • Logo Design
    • Product Design
    • Show more
    Location
    Corby, United Kingdom
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    4 Projects Listed

    Massive Startup Services

    • WordPress Website Design
    • Digital Marketing
    • Branding
    • Logo Design
    • Product Design
    • Mobile App Development
    • Software Development
    • IT Services
    • Business Consulting
    • eCommerce Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Hirescape Ltd
    • Crystal Vue Ltd
    • Flexedu
    • Evsec
    • MAIG Services
    • Pharez Solutions
    • Macro Healthcare Ltd
    • Sunprotect SRL
    • Total Plants and Gardens
    • Native Care Ltd
    Data sourced from the agency's DesignRush profile

    Massive Startup Reviews & Testimonials

    • Aadam Ahmed
      Aadam Ahmed Review from Google
      5.0 ★

      Aadam Ahmed's Review Sourced from Google

      Excellent services provided by Massive start up LTD and very reasonably priced. Would recommend their services to all who are interested in them. Special thanks to Attila and Suzana for all the work they put into our project. All the best!

    • Dragos Michiu
      Dragos Michiu Review from Google
      5.0 ★

      Dragos Michiu's Review Sourced from Google

      I've used their service and OMG what was the result. I would recommend at any time, the tech support is beyond normal standard.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    5.0 5.0 (3)

  • NexusBond

    Trusted by Industry Leaders. We Connect You.

    Blending top-notch branding, development, and advertising components, NexusBond offers holistic solutions tailored for discerning clientele. Explore the possibilities of what we can achieve together...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    • Web Design
    • WordPress Website Design
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    Under 49
    Portfolios Count
    1 Project Listed

    NexusBond Services

    • Software Development
    • Mobile App Development
    • Web Development
    • Web Design
    • WordPress Website Design
    • eCommerce Development
    • AI Development
    • CRM Consulting
    • ERP Consulting
    • DevOps Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • William Hill
    • Ladbrokes Coral
    • Transense
    Data sourced from the agency's DesignRush profile

    NexusBond Reviews & Testimonials

    • Louise Hobbs
      Louise Hobbs Review from Google
      5.0 ★

      Louise Hobbs's Review Sourced from Google

      NexusBond built our new website as our current one was extremely outdated. Marco and the team are brilliant to work with. Before, during and after the website set up. The communication has been efficient and they are always very helpful and approachable.

    • Alma 1938
      Alma 1938 Review from Google
      5.0 ★

      Alma 1938's Review Sourced from Google

      Working with Marco and Guy has been fantastic. They are incredibly helpful and thorough. Their communication is clear and efficient and they implement changes and updates with ease. It has been an absolute treat to work with NexusBond.

    • Alison Keane
      Alison Keane Review from Google
      4.0 ★

      Alison Keane's Review Sourced from Google

      I am currently working on a new website with Nexus and have found the team to be very supportive. Guy put my mind at rest from the outset, by investing time initially in scoping out the project, which gave me confidence in the budget. . Our account mannager Marco was very responsive and patient throughout the process,, and is extremely knowledgeable.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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    4.9 4.9 (25)

  • Ranktix

    Boost Your Brand with Top

    We are one of the leading digital marketing agency in London, helping small and big businesses in all industries achieve their goals. We are experts in providing customized digital marketing solutions. Were a young, dynamic staff member who wants to work as an extension of your company...

    Top Services:

    • SEO
    • Social Media Marketing
    • Web Design
    • Web Development
    • PPC
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    50 - 99
    Average Hourly Rate
    $20/hr
    Minimal Budget
    $1,000 - $10,000

    Ranktix Services

    • SEO
    • Social Media Marketing
    • Web Design
    • Web Development
    • PPC
    • Graphic Design
    • Creative Services
    • Software Development
    • Digital Marketing
    • Content Marketing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Relifetech
    • Gielly Green
    • PhotoGenics
    • Red Construction
    • Hatchstudio
    • Helthbear
    • The Lane
    • Block Club Chicago
    • THE MINTE
    • Hitachi Digital Solutions
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile

Related Services

Software Development Specialties in the United Kingdom

Software Development Companies by City

Popular Services

Why Companies Trust DesignRush

Rated 4.8 on Google and 4.7 on Trustpilot, DesignRush Agency Directory is a reliable resource for finding custom software development companies in the United Kingdom. We owe this to our executive selection team, which follows a strict screening process when featuring agencies on the platform, assessing key performance indicators, like portfolio, client reviews, and industry reputation.

DesignRush rating logos on Trustpilot and Google

Learn more about DesignRush Agency Ranking Methodology.

Sources

DesignRush sustains a directory of over 40,000 agencies categorized by service category, location, expertise, and reviews. We build our database in two ways:

  • Our dedicated team of agency experts actively searches the web for top-performing companies. We then pull information from their websites, online presence, and client testimonials to verify their status and qualifications prior to listing.
  • The agencies listed get notified of their profiles on the website and they can choose to claim it or not, which suggests their availability for more collaborations.

Agencies can also reach out to DesignRush and must go through the verification process prior to being listed.

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. 

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