Top Software Development Companies in London

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Software Development Companies
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Software Development Companies Hiring Guide

Need help finding the right agency? Researched by Haldis Toppen and edited by Kris Alnes
Looking for the best software development company in London? UpCity compiles authentic reviews, company descriptions, project examples, and more into a list for you to review. Feel confident you're finding the top provider for your business.

UpCity offers objective, independent research and verified user reviews. We earn compensation from some providers who sign up for sponsored profiles. Learn more about our trusted providers.

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40 Provider(s)Last Updated: October 28, 2025
UpCity Platinum Sponsor
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Zazz

London, ENG, GB + 1 More Location
5.0 | 1 review
Last reviewed on 9/8/2025
Zazz is a trusted software engineering and IT services partner helping enterprises deliver secure, scalable, and high-impact technology initiatives. We Solve complex enterprise challenges - legacy bottlenecks, technical debt, talent shortages, compliance risks, and system fragmentation.
Businesses provider works with
Works with
Small, Medium, Enterprise
Provider's minimum per-project cost
Per-project minimum
$25,000 or more
Provider's minimum retainer cost
Retainer minimum
$5,000 or more, monthly
Provider updated information on 9/8/2025
Services Offered
Ruby on Rails DevelopmentMachine LearningBlockchain DevelopmentAndroid App DevelopmentiOS App DevelopmentView All Services (32)
UpCity Silver Sponsor
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Bird Marketing

London, ENG, GB See Location
5.0 | 10 reviews
Last reviewed on 11/7/2024
Bird Marketing, an acclaimed global digital marketing agency with prestigious awards, excels in delivering innovative, results-driven strategies from our hubs in London, New York, and Dubai. Our comprehensive services, backed by top ratings, ensure unparalleled digital success for our clients.
Businesses provider works with
Works with
Small, Medium, Enterprise
Provider's minimum per-project cost
Per-project minimum
$1,000 or more
Provider's minimum retainer cost
Retainer minimum
$1,500 or more, monthly
Provider updated information on 8/22/2024
Services Offered
WooCommerce DevelopmentSoftware DevelopmentMagento DevelopmentShopify DevelopmentWebsite DevelopmentView All Services (22)
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Agile Cyber Solutions

London, ENG, GB See Location
5.0 | 2 reviews
Last reviewed on 5/29/2025
Since 2012, Agile Cyber Solutions has transformed ideas into reality for startups and businesses. Specializing in web, API, mobile, and AI technologies, we deliver agile, client-focused solutions with ongoing support. With 350+ projects, we align every product with our clients’ vision.
Businesses provider works with
Works with
Small
Provider's minimum per-project cost
Per-project minimum
$5,000 or more
Provider's minimum retainer cost
Retainer minimum
$1,500 or more, monthly
Provider updated information on 6/13/2025
Services Offered
Software Development

Snotor

London, ENG, GB See Location
5.0 | 3 reviews
Last reviewed on 1/15/2025
Snotor provides a full range of custom software development services, with a focus on web and mobile development in FinTech, Healthtech, and E-commerce industries. With 16 years of experience and 450+ projects delivered, we have already helped companies across industries conduct their digital shift.
Businesses provider works with
Works with
Small, Medium
Provider's minimum per-project cost
Per-project minimum
$10,000 or more
Provider's minimum retainer cost
Retainer minimum
$2,000 or more, monthly
Provider updated information on 10/4/2024
Services Offered
Software Development

Plavno

London, ENG, GB See Location
5.0 | 1 review
Last reviewed on 4/2/2024
Plavno team develops top-notch tools and products that enhance human potential in care delivery and enhance the patient experience. Technology shouldn’t be a barrier but a tool to empower people in delivering and receiving exceptional care. Plavno is a premier software development company that helps
businesses capture the opportunity of AI technology.
Businesses provider works with
Works with
Small, Medium, Enterprise
Provider's minimum per-project cost
Per-project minimum
$5,000 or more
Provider updated information on 3/27/2024
Services Offered
Software Development
Netro Systems Limited is a custom software development services provider based in Garstang, Lancashire. They offer software as a service (SaaS) development, 3D product animation and user interface and experience (UI/UX) design services, providing businesses with solutions tailored to their unique needs.
Businesses provider works with
Works with
Small, Medium
Provider's minimum per-project cost
Per-project minimum
$1,000 or more
Provider's minimum retainer cost
Retainer minimum
$500 or more, monthly
Provider updated information on 10/16/2024
Services Offered
Software DevelopmentUX Design
World-class development teams to deliver your next Web, Mobile, AI/ML or Enterprise Solution in record time and quality.
Businesses provider works with
Works with
Small, Medium, Enterprise
Provider's minimum per-project cost
Per-project minimum
$10,000 or more
Provider updated information on 12/20/2022
Services Offered
Software Development

TH-EY

London, ENG, GB See Location
Who are TH-EY? Since our inception in 2017, we've grown into a remote team of experts, spanning from the UK to Poland. We specialize in delivering tailor-made web and mobile applications, with a keen focus on collaboration and direct client-developer interaction.
Businesses provider works with
Works with
Small, Medium, Enterprise
Provider's minimum per-project cost
Per-project minimum
$5,000 or more
Provider's minimum retainer cost
Retainer minimum
$500 or more, monthly
Provider updated information on 10/14/2025
Services Offered
Software Development

Teqnovos

London, ENG, GB See Location
Teqnovos is a leading mobile and web app development company that caters to the technological needs of a wide variety of businesses. The company has a strong client portfolio that ranges from SMBs to large enterprises.
Businesses provider works with
Works with
Small, Medium, Enterprise
Provider's minimum per-project cost
Per-project minimum
$2,500 or more
Provider's minimum retainer cost
Retainer minimum
$5,000 or more, monthly
Provider updated information on 3/31/2023
Services Offered
Software Development

Timspark

London, ENG, GB See Location
Timspark is a cutting-edge custom software development business with 15 years of experience. We ensure that our services are the best on the market by utilizing the most modern practices in technology and business domains.
Businesses provider works with
Works with
Medium
Provider's minimum per-project cost
Per-project minimum
$10,000 or more
Provider's minimum retainer cost
Retainer minimum
$5,000 or more, monthly
Provider updated information on 6/5/2025
Services Offered
Software Development

Upstaff

London, ENG, GB See Location
Upstaff is a technology partner with expertise in AI, Web3, Software, and Data. We collaborate with startups, SMBs and ISVs to solve technical challenges and build new products. Services include: Find and Hire Developers, and Custom Software Development & Consulting.
Businesses provider works with
Works with
Small, Medium, Enterprise
Provider's minimum per-project cost
Per-project minimum
$1,000 or more
Provider's minimum retainer cost
Retainer minimum
$500 or more, monthly
Provider updated information on 4/12/2025
Services Offered
Software Development
Who We Are
Co-CEO
LinkedIn

Impressit

London, ENG, GB See Location
5.0 | 1 review
Last reviewed on 8/9/2022
Impressit is a premium software development company with strong expertise in building cloud and mobile applications. Our mission is to help startups and SMEs build digital products and keep the development process as clean as possible. As a premium company we provide our partners with a big variety
Businesses provider works with
Works with
Small, Medium
Provider's minimum per-project cost
Per-project minimum
$10,000 or more
Provider's minimum retainer cost
Retainer minimum
$2,000 or more, monthly
Provider updated information on 8/10/2022
Services Offered
Software Development
AI Technologies architects, develops and manages data related software and solutions using state of the art algorithms (including but not limited to artificial intelligence). Our company provides end-to-end AI development services and innovative solutions for all industries.
Businesses provider works with
Works with
Medium, Enterprise
Provider's minimum per-project cost
Per-project minimum
$1,000 or more
Provider's minimum retainer cost
Retainer minimum
Less than $500, monthly
Provider updated information on 5/15/2023
Services Offered
Software Development

Cogworks

London, ENG, GB See Location
We are Cogworks, independent digital product creators making a meaningful difference in the industry. Using a highly polished technical toolkit and diverse skillset to help forward-thinking enterprises win. How we make things happen: Umbraco, Consultancy, Design and Software Development.
Businesses provider works with
Works with
Medium, Enterprise
Provider's minimum per-project cost
Per-project minimum
$10,000 or more
Provider's minimum retainer cost
Retainer minimum
$2,000 or more, monthly
Provider updated information on 8/14/2024
Services Offered
Software Development
Imaginary Cloud is a Web, Mobile & AI Software Development, and UX/UI Design company that has helped build and launch >300 applications worldwide with industry-leading clients such as Nokia, Thermo-Fisher, and BNP Paribas. All at competitive rates with UK, US, and PT offices.
Businesses provider works with
Works with
Small, Medium, Enterprise
Provider's minimum per-project cost
Per-project minimum
$10,000 or more
Provider's minimum retainer cost
Retainer minimum
$2,000 or more, monthly
Provider updated information on 10/13/2022
Services Offered
Software Development
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Software Development Companies Hiring Guide

Researched by Haldis Toppen and edited by Kris Alnes
Updated August 29, 2025

What is software development outsourcing?

Software development outsourcing involves hiring an external firm to handle software development tasks instead of managing these functions in-house. By outsourcing, businesses can access a broader talent pool and advanced technologies, leading to more efficient and cost-effective project execution.

For small and medium-sized businesses (SMBs), outsourcing can be particularly advantageous. Software development outsourcing costs can be budget friendly compared to maintaining an internal team, which can be expensive and time-consuming. Outsourcing enables SMBs to focus on their core competencies while benefiting from the specialized skills of external experts.

What are software development services?

  1. Custom software development: This involves creating software tailored to a business’s specific needs, such as bespoke CRM systems or unique management tools. Custom solutions ensure that the software aligns with operational processes and goals, enhancing efficiency and effectiveness.

  2. Mobile app development: This focuses on developing applications for mobile devices across various platforms, including iOS and Android. Outsourcing mobile app development helps businesses engage customers on the go with user-friendly mobile solutions.

  3. Web development: This encompasses the creation and maintenance of websites and web applications, including design, user experience, backend functionality, and performance optimization. Professional web development ensures a robust, secure, and attractive online presence, which is essential for customer engagement and retention.

  4. Software maintenance and support: This includes ongoing updates, bug fixes, and performance improvements to ensure software continues to function effectively. Outsourcing these tasks helps businesses maintain smooth operations without needing dedicated in-house resources.

  5. Cloud solutions and integration: This involves deploying and managing software in cloud environments and integrating various applications for seamless operation. Cloud solutions offer scalability and flexibility, while integration services ensure different systems work together efficiently.

Outsourcing these services allows SMBs to access high-quality expertise and technology, overcoming challenges and achieving business objectives more effectively.

What are the differences between software development methodologies?

Software development methodologies are frameworks used to plan, structure, and execute software projects. Each methodology has its approach, impacting the project's success. Here are some commonly used methodologies.

  1. Agile development: Agile emphasizes flexibility, collaboration, and customer feedback. Projects are broken into small, manageable units called iterations or sprints, which typically last 1-4 weeks. Agile focuses on delivering functional software quickly and adapting to changes throughout the project. Key frameworks include Scrum, Kanban, and Extreme Programming (XP).

    • Key features: Iterative approach with frequent releases, continuous customer engagement, and adaptability to changes.

    • Best for: Projects with evolving requirements where customer feedback is crucial.

  2. Scrum: Scrum is an Agile framework that organizes development into time-boxed iterations called sprints, usually lasting 2-4 weeks. It involves regular meetings, including daily stand-ups, sprint planning, sprint reviews, and retrospectives.

    • Key features: Short development cycles, defined roles (Scrum Master, Product Owner, development Team), and regular feedback.

    • Best for: Teams seeking a structured Agile approach with a focus on incremental improvements.

  3. Kanban: Kanban is an Agile framework that emphasizes visualizing workflow, managing work in progress (WIP), and optimizing flow. It uses a Kanban board to represent different stages of work.

    • Key features: Visual workflow, WIP limits, and continuous delivery.

    • Best for: Teams needing continuous delivery with flexible prioritization.

  4. Extreme Programming (XP): XP focuses on technical excellence, frequent releases, and close collaboration between developers and customers. It emphasizes practices like test-driven development (TDD), pair programming, and continuous integration.

    • Key features: Technical best practices, regular customer feedback, and simplicity.

    • Best for: Projects requiring high technical quality and frequent releases.

  5. Waterfall development: Waterfall is a linear, sequential methodology where each project phase must be completed before the next begins. It includes distinct phases such as requirements analysis, design, implementation, testing, and maintenance.

    • Key features: Sequential phases, extensive documentation, and clear milestones.

    • Best for: Projects with well-defined requirements unlikely to change.

  6. Lean Software development: Inspired by Lean manufacturing, this methodology focuses on maximizing value while minimizing waste. It emphasizes continuous improvement, efficiency, and delivering value quickly.

    • Key features: Value stream mapping, continuous improvement, and customer focus.

    • Best for: Projects aiming to streamline processes and deliver value efficiently.

  7. DevOps: DevOps combines software development (Dev) and IT operations (Ops) to enhance collaboration, automation, and continuous delivery. It emphasizes integrating development and operations to improve deployment frequency and reliability.

    • Key features: Automation of build, test, and deployment processes, collaboration between development and operations teams, and CI/CD.

    • Best for: Organizations seeking to improve deployment processes and collaboration.

Benefits of outsourcing software development services

Outsourcing software development offers several advantages, including:

Access to expertise and specialized skills

Outsourcing provides access to a global pool of talent with specialized skills and extensive experience. Development agencies often have teams with expertise in various technologies, programming languages, and industry-specific solutions, leading to innovative and high-quality software.

Cost savings

Outsourcing can be more cost-effective than building and maintaining an in-house team. It avoids expenses related to hiring, training, and retaining employees, as well as office space, equipment, and benefits. Many outsourcing providers operate in regions with lower labor costs, reducing overall expenses.

Faster time to market

External development agencies often have established processes and experienced teams that can quickly adapt to project requirements. This can speed up development cycles, allowing businesses to launch products or updates faster and gain a competitive edge.

Focus on core business functions

By outsourcing software development, businesses can concentrate on their core activities, such as marketing, sales, and customer service, while external experts handle development tasks. This shift in focus can boost overall productivity and support business growth.

Scalability and flexibility

Outsourcing offers the flexibility to scale resources up or down based on project needs. Whether requiring additional developers for a short-term project or adjusting the scope of work, outsourcing allows for easy adjustments without long-term commitments.

Cost of outsourcing software development

The cost of outsourcing varies widely depending on project complexity, team expertise, and location. Hourly rates typically range from $25 to $50 in lower-cost regions (e.g., Eastern Europe, Southeast Asia), $50 to $150 in moderate-cost areas (e.g., Latin America, India), and $100 to $250 or more in higher-cost regions (e.g., North America, Western Europe).

For projects with clear requirements, fixed fees usually range from $10,000 to $50,000 for smaller projects and $50,000 to $200,000+ for larger, more complex ones. Monthly retainers for ongoing support generally cost between $2,000 and $10,000. Additional costs may include setup fees ($1,000 to $5,000), ongoing maintenance ($500 to $5,000 per month), and extra charges for advanced features. Geographic location affects costs, with offshore providers offering lower rates but potential communication challenges, while nearshore providers balance cost and proximity, and onshore providers are more expensive but offer easier communication.

Software development in-house vs. outsourcing

Deciding whether to outsource or keep software development in-house depends on several factors. Outsourcing can be more cost-effective, providing access to specialized skills and offering flexibility in scaling resources. It also speeds up development and allows internal teams to focus on core functions.

In-house development, on the other hand, offers greater control and immediate feedback, ensuring alignment with company goals. It facilitates better communication, integration with existing systems, and fosters long-term expertise. Additionally, in-house development can offer better protection for intellectual property.

The choice between outsourcing and in-house development should consider project complexity, budget, available resources, timeline, and need for control and security. Each option has its benefits, and the best decision will align with your company’s specific needs and objectives.

How to choose the best software development company?

To choose the best software development company, start by clearly defining your project needs and objectives.

Look for companies with a proven track record in your industry and relevant technical skills. Assess their communication practices and ensure they align with your project management style. Check client reviews and case studies to gauge their reliability and performance.

Consider the cost, but focus on the value offered. Compare quotes and ensure the company’s solutions meet your needs. UpCity’s directory can help you find and assess potential providers efficiently, offering insights into their expertise and client feedback.

What are the different support options post-launch?

After launching your software, several support options are crucial for ongoing success. Technical support addresses troubleshooting, bug fixes, and technical issues through various channels like phone, email, or live chat. Maintenance and updates involve regularly fixing bugs, improving performance, and adding new features. Customer service provides help with software use and includes resources like user manuals and FAQs. Managed services offer proactive management and performance optimization, typically under a service level agreement (SLA). Training and documentation help users understand and use the software effectively, while community support through forums allows users to seek advice and solutions from peers. Combining these options ensures comprehensive support and effective software management post-launch.