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

6 Companies - Rankings updated: September 06, 2026

Every agency on DesignRush meets evaluation criteria around expertise and client feedback to empower informed choices. Some listings include paid partnerships.

Expertise
AI
$50,000 & Up
Sort by: Sponsored
United Kingdom × AI × $50,000 & Up × Clear Filters

  • Andersen

    FinTech Unleashed: React Native Excellence by Andersen

    Choose Andersen for top-tier React Native development in the FinTech industry. Trust our 190+ experts to ensure 100% compliance with industry standards...

    Top Services:

    • Software Development
    • Web Development
    • UI/UX Design
    • Mobile App Development
    • Product Design
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    18 Projects Listed

    Andersen Services

    • Software Development
    • Web Development
    • UI/UX Design
    • Mobile App Development
    • Product Design
    • AI Development
    • IT Services
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • GlobePayroll
    • Samsung
    • Marvel
    • Media Markt
    • IHS Markit
    Data sourced from the agency's DesignRush profile

    Andersen Reviews & Testimonials

    • Kristian Karimo
      Kristian Karimo CEO at OurCnC
      5.0 ★

      HTML5 Review from Kristian Karimo

      Andersen offers skilled project managers who adhere to the approved development plan, ensuring the implementation of all functionalities on time. It generates clear reports, exhibits excellent communication, and is English fluent. The client communicates with Andersen via Skype and Slack and uses Jira as a tracking system. Andersen organizes the processes well and performs correctly. Its team is always punctual and dedicated to the project. Andersen helped in improving the client's product.

    • Markus Bohl
      Markus Bohl Founder & Advisory Board Member at Laya Technologies
      5.0 ★

      Software Development Review from Markus Bohl

      Andersen has a confident project manager who came through professionally and neatly structured the process. Anderson provided the client with individual resources that are a part of a larger, mostly remote team. With these resources, the client builds the initial product and brings it to a sales-ready stage so that it can be used with clients. Andersen helped with UI/UX design, software development, and Python backend development services (Verified via email)

    • Adalin Cheng
      Adalin Cheng Enterprise Solutions Architect at Neo-Bank
      5.0 ★

      Software Development Review from Adalin Cheng

      One of the most impressive things about Andersen Lab is that the entire team [is fully dedicated] to [the] work they are doing. In the Agile process, where decisions are changed rapidly [...], [the] Andersen Lab team used to react patiently to every single change. Although the teams task is mostly implementation of our requirements, they often [go] the extra mile and [are involved] in the ideation process as well. (Verified via email)

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    4.6 4.6 (4)

  • index.dev

    The Fastest Way To Hire Top Remote Engineers

    Index.dev is a global talent network that connects leading startups and enterprises with vetted tech talent remotely, from freelancers to contractors to full development teams. With 97% of trials turning into long-term hires, we help companies find highly-skilled tech talent within 48 hours, while managing...

    Top Services:

    • Staff Augmentation
    • Software Development
    Location
    London, United Kingdom
    Number of Employees
    50 - 99
    Average Hourly Rate
    $70/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    9 Projects Listed

    index.dev Services

    • Staff Augmentation
    • Software Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Stuart
    • Vodafone
    • NetRefer
    • Daloopa
    • Perforce Software
    • Genemod
    • Matsuko
    • Entrupy
    • Omio
    • SpeQtral
    Data sourced from the agency's DesignRush profile

    index.dev Reviews & Testimonials

    • SAV BEA
      SAV BEA Review from Google
      5.0 ★

      SAV BEA's Review Sourced from Google

      " If you're looking for a technical consultant who is knowledgeable, reliable, and always willing to go the extra mile, then Vadym Yatsunyk is your guy. One of the things that set Vadym apart from other technical consultants is his ability to explain complex technical concepts in a way that is easy to understand. He takes the time to listen and then offers customized solutions"

    • Tata
      Tata Review from Google
      5.0 ★

      Tata's Review Sourced from Google

      I am delighted to share my experience working with Account Executive Vadym Yatsunyk. From the very first interaction, Vadym exuded professionalism, enthusiasm, and dedication towards helping me achieve my goals.

    • Tatiana Ursu
      Tatiana Ursu Review from Google
      5.0 ★

      Tatiana Ursu's Review Sourced from Google

      I am proud to be part of such a team of professionals as I met here at Index. Index is a wonderful employer!

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

  • The Distance Agency Ltd

    Stunning Apps

    A top-rated UK app development company, delivering award-winning Android and iOS apps since the first iPhone...

    Top Services:

    • Mobile App Development
    • AI Development
    • Software Development
    • UI/UX Design
    • Digital Strategy
    • Show more
    Location
    York, United Kingdom
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    17 Projects Listed

    The Distance Agency Ltd Services

    • Mobile App Development
    • AI Development
    • Software Development
    • UI/UX Design
    • Digital Strategy
    • Product Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • The Encephalitis Society
    • NHS
    • Virgin Trains East Coast
    • Slimming World
    • Astra Zeneca
    • SafeStyle
    • Bentley
    • Eurotunnel Le Shuttle
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile

  • Sombra

    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

    Sombra Services

    • AI Development
    • Software Development
    • Mobile App Development
    • Cloud Consulting
    • Big Data Analytics
    • Managed Services
    • DevOps Consulting
    • IT Services
    • Staff Augmentation
    • Cybersecurity
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • ITC Complience
    • International Farming
    • Studio Ninja
    • Wineshipping
    • Datacubed Health
    • Waterford.org
    • On Location
    • Wifinity
    Data sourced from the agency's DesignRush profile

    Sombra Reviews & Testimonials

    • Orysia Marukhno
      Orysia Marukhno Review from Google
      5.0 ★

      Orysia Marukhno's Review Sourced from Google

      A wonderful place for work. The atmosphere is very cozy and comfortable. People and friendly and helpful. Guys, you are great.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    4.9 4.9 (74)

  • Opinov8

    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

    Opinov8 Services

    • Software Development
    • Mobile App Development
    • UI/UX Design
    • Web Development
    • Big Data Analytics
    • Staff Augmentation
    • Cloud Consulting
    • DevOps Consulting
    • IT Services
    • AI Development
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Renault
    • WELD Health
    • Hastee
    • Instamotion
    • HR DataHub
    • Beacon
    • United Language Group
    • German Society for International Cooperation
    Data sourced from the agency's DesignRush profile
    Visit Website View Profile
    5.0 5.0 (6)

  • &above (andabove)

    Transform AI Experiments Into Workflows

    &above is an AI product agency that helps scale-ups and enterprises turn AI experiments into a new way of working. With a problem-first, design-led approach, we design and build agentic products and AI operating systems that people actually use every day - not pilots that stall...

    Top Services:

    • AI Development
    • Software Development
    • Engineering
    • UI/UX Design
    • Mobile App Development
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $50,000 & Up

    &above (andabove) Services

    • AI Development
    • Software Development
    • Engineering
    • UI/UX Design
    • Mobile App Development
    • Staff Augmentation
    • Branding
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Google
    • Google Cloud
    • Revolut
    • Sage
    • Tesco
    • Dunnhumby
    • Upstix
    Data sourced from the agency's DesignRush profile

    &above (andabove) Reviews & Testimonials

    • Perry Steward
      Perry Steward Review from Google
      5.0 ★

      Perry Steward's Review Sourced from Google

      We partnered with &above on a joint client project, where they led design and development while we handled content strategy and SEO. The experience was smooth throughout. Their design work was sharp, their dev execution was clean, and they were easy to work with as a cross-functional partner. Would happily collaborate again and recommend them to any brand looking for a strong creative and technical team.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    5.0 5.0 (1)

Related Services

Software Development Specialties in the United Kingdom

Software Development Companies by City

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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.

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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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