Top Private Blockchain Development Companies & Expert Blockchain Developers in UK

Private blockchains offer enhanced security and control for business operations. Finding the right Private Blockchain developers is crucial. SelectedFirms lists the Best Private Blockchain Development Companies in UK, helping you build a secure and efficient platform.
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4.9 out of 5, based on 50 real reviews.
Rankings updated: Jun 07, 2026

List of Top Private Blockchain Development Companies in UK | Best Private Blockchain Developers

Certain agencies may be featured through sponsored placements. Rankings and SF Scores remain unbiased and are based solely on our evaluation methodology.

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Vention
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58

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

58

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
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Expertise Distribution (%)
  • 10% Blockchain Development

  • 10% Ecommerce Development

  • 10% Mobile App Development

  • 10% Software Development

  • 10% Web Development

  • 10% Web Design

  • 10% IT Services

  • 10% Artificial Intelligence

  • 10% Product Engineering services

  • 10% Cloud Computing Services

Engineering peace of mind

Vention is a global software development company with over 20 years of experience delivering innovative, scalable solutions for startups and large enterprises. We handle projects of any size and complexity, enabling clients to accelerate growth, launch new products, and seize emerging opportunities. With a global network of 3,000+ experienced developers, we provide top engineering talent aligned to your time zone, technology stack, and business goals. We’ve partnered with 500+ industry-leading organizations, including PayPal, IBM, Mount Sinai, PwC, and Postman, contributing to more than $15B in client acquisitions. Our engagement model helps companies reduce operational costs by up to $600K annually, while our long-term relationships—averaging over 36 months and extending up to 16 years—reflect strong client trust and satisfaction. Vention offers full-cycle software development services, from strategy and architecture to deployment and optimization. Our capabilities include custom software development, web and mobile app development, QA and testing, cloud and DevOps, eCommerce platforms, AR/VR experiences, artificial intelligence, and blockchain solutions. As a trusted technology partner, Vention empowers businesses to innovate faster, scale efficiently, and stay competitive in an evolving digital landscape.

See all 9+ Portfolios
Inside Service Listing

$50-$99/hr

Hourly Rate
Inside Service Listing

$25,000+

Min. Budget Size
Inside Service Listing

1,000 - 3,000

Team size
Inside Service Listing

London, UK

Location
Verified Client Review

Verified Client Review

Mobile App Dev for Sports Tracking Platform

Reviewed by: Brent Varrall, Founder at AllGains View all 16 ReviewsView all Reviews
Debut Infotech Global Services LLC
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55

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

55

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
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Expertise Distribution (%)
  • 20% Blockchain Development

  • 20% Artificial Intelligence

  • 15% Mobile App Development

  • 15% Software Development

  • 10% Web Development

  • 10% IT Services

  • 10% Business Services

Redefining Software Design and Development with AI

Debut Infotech is an AI-augmented blockchain and software development company helping organizations across financial services, healthcare, supply chain, and digital platforms build systems that perform reliably in complex, regulated environments. Founded in 2011 and blockchain-native since 2015, the company brings engineering discipline and technology depth to enterprises moving from fragmented pilots to production-grade systems. With delivery centers across the USA, UK, Canada, and India, Debut Infotech combines regional market understanding with globally distributed engineering capability — enabling clients to move with speed, consistency, and governance. Service Areas Enterprise AI and generative AI — LLM integration, AI agents, RAG pipelines, and intelligent process automation Blockchain and Web3 — smart contracts, DeFi protocols, RWA tokenization, exchange infrastructure, and enterprise blockchain on Hyperledger Fabric and Corda Mobile — native iOS, Android, and cross-platform applications built for enterprise security and scale Web and software — full-stack platforms, SaaS products, and API-first enterprise systems Proven Delivery: $62M+ raised across client platforms including Ifinca, IntegraLedger, Everledger, and T?M 90% customer success score across enterprise engagements 15 years of enterprise software delivery Fortune 500 clients and high-growth startups across 25+ industry verticals 50–249 engineers spanning AI, blockchain, and software disciplines

See all 9+ Portfolios
Inside Service Listing

$25-$49/hr

Hourly Rate
Inside Service Listing

$10,000 - $24,998

Min. Budget Size
Inside Service Listing

50 - 100

Team size
Inside Service Listing

Oxford, UK

Location
Verified Client Review

Verified Client Review

Excellent Real World Asset Tokenization Development Services by Debut Infotech

Reviewed by: Megan Parrish, Manager View all 17 ReviewsView all Reviews
SDLC Corp
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Claimed by Official Representatives

52

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

52

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
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Expertise Distribution (%)
  • 5% Blockchain Development

  • 30% Software Development

  • 20% Mobile App Development

  • 20% Web Development

  • 15% Ecommerce Development

  • 10% Artificial Intelligence

Your Technology Partner

SDLC Corp is a software development company founded in 2015 and headquartered in San Francisco, California, United States. The company operates with a global delivery presence across the USA, UK, UAE, India, Australia, and Canada. SDLC Corp employs 400+ professionals, including software engineers, solution architects, UI/UX designers, DevOps specialists, and technology consultants. The company works with startups, mid-sized & large businesses, and enterprises across multiple regions and industries. SDLC Corp provides custom software development services that include web application development, mobile application development for native and cross-platform environments, artificial intelligence and machine learning solutions, ERP development using Odoo and Salesforce, blockchain development, SaaS product engineering, cloud infrastructure and DevOps services, and game and iGaming development. These services support both new digital product development and the modernization, integration, and scaling of existing software systems. The company offers flexible engagement models such as dedicated development teams, full-cycle product development, and long-term IT outsourcing partnerships. These models are designed to support distributed engineering teams, continuous development roadmaps, and ongoing system maintenance. SDLC Corp serves clients across fintech, gaming and iGaming, healthcare, retail and e-commerce, logistics and supply chain, SaaS and technology, and manufacturing industries. Typical use cases include workflow automation, system integration, data-driven applications, secure transaction platforms, high-traffic digital systems, and enterprise software platforms. SDLC Corp follows structured software engineering practices that include requirement analysis, architecture planning, iterative development, quality assurance, deployment, and post-launch support. By aligning technology implementation with defined business requirements, the company supports operational efficiency, system reliability, and long-term digital scalability.

See all 36+ Portfolios
Inside Service Listing

$25-$49/hr

Hourly Rate
Inside Service Listing

$10,000 - $50,000

Min. Budget Size
Inside Service Listing

200 - 414

Team size
Inside Service Listing

Holbrooks, UK

Location
Verified Client Review

Verified Client Review

Founder @ dominux

Reviewed by: Ezekiel Oluwole, Founder & CEO View all 8 ReviewsView all Reviews
monedafx
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Claimed by Official Representatives

38

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

38

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
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Expertise Distribution (%)
  • 100% Blockchain Development

Built for Traders,By Traders

Moneda is a leader in trading technology and automated systems, founded on a commitment to integrity and innovation. We deliver a full suite of transparent, data-driven solutions, including institutional-grade strategies and highly efficient automated trading tools. Our ecosystem supports over 2,000 members with expert community support and a clear path for financial expansion.

View monedafx Profile
Inside Service Listing

$25-$49/hr

Hourly Rate
Inside Service Listing

$500+

Min. Budget Size
Inside Service Listing

20+

Team size
Inside Service Listing

Kensington, UK

Location
Inceptives Digital
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Claimed by Official Representatives

38

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

38

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
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Expertise Distribution (%)
  • 20% Blockchain Development

  • 40% Mobile App Development

  • 20% Software Development

  • 10% Artificial Intelligence

  • 10% Business Services

We are Mobile App Development Company

Inceptives Digital is your trusted partner for mobile app development in the US. With more than 8 years of experience and a talented workforce of 150+ developers, we’ve created 70+ high-performing apps across 20+ industries. Our mission is to help businesses transform ideas into powerful digital solutions that connect with users and deliver lasting value. Through AI-driven innovation, intuitive design, and a results-focused approach, we empower startups and enterprises alike to achieve their goals and thrive in today’s competitive digital landscape.

See all 6+ Portfolios
Inside Service Listing

$50-$99/hr

Hourly Rate
Inside Service Listing

$500 - $50,000

Min. Budget Size
Inside Service Listing

50 - 99

Team size
Inside Service Listing

London, UK

Location
Junkies Coder
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Claimed by Official Representatives

28

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

28

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
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Expertise Distribution (%)
  • 20% Blockchain Development

  • 40% Mobile App Development

  • 20% Artificial Intelligence

  • 20% CMS

Enterprise Mobile App Development Company

Junkies Coder is a leading technology solution provider across 15 countries and 50+ Rockstar Developers is our strength, We're specializing in web development Excellence, Top-rated Mobile App Development, Top-rated Android App Development, Top-rated iOS App Development, Top-rated Wearable App Development, Trusted Blockchain Development and innovative solutions. Our experienced team is dedicated to delivering high-quality service and support to help businesses achieve their goals. With a passion for technology and a commitment to delivering impactful results, we have the expertise and resources to streamline operations and drive success. Trust Junkies Coder for your technology needs and Hire Mobile App Developers. Junkiescoder stands at the forefront of innovation, specializing in crafting stellar Mobile apps, captivating Web Applications, and sophisticated enterprise custom solutions. We excel in tailoring, enhancing, and seamlessly integrating intricate enterprise-grade systems, empowering businesses with insightful analytics, and pioneering cutting-edge web and mobile innovations. Boasting a rich legacy of over a 8+ years, our endeavors have catered to a diverse clientele spanning individuals, burgeoning startups, and esteemed organizations alike. At Junkiescoder, our adept team continually surges forward, honing their skills to keep pace with the dynamic industry landscape. From Blockchain to E-Learning, from IoT to Artificial Intelligence, from Machine Learning to SaaS, from Augmented Reality to Virtual Reality, the spectrum of our expertise knows no bounds. Our seasoned development squad has not only mastered these domains but also perpetually evolves alongside industry advancements. Let our achievements speak volumes; delve into our illustrious portfolio and peruse the glowing testimonials from our esteemed clients on our website. With Junkies Coder, you can trust that your technology needs are in good hands. What is the estimated timeline and cost for developing our website or mobile app? The estimated timeline and cost for developing your website or mobile app will depend on various factors such as project complexity, required features, design customization, and integration needs. We will analyze your specific requirements and provide you with a detailed timeline and cost proposal tailored to your project. Can you assist with integrating third-party services or APIs into our websites or mobile apps? Yes, we can assist with integrating third-party services or APIs into your websites or mobile apps. we have experience in seamless integration to enhance the capabilities of your digital products. What is our approach to quality assurance and testing during the development process? Our approach to quality assurance and testing is comprehensive. We follow industry best practices and conduct thorough testing at different stages of development to ensure the functionality, performance, and reliability of your website or mobile app. How we handle ongoing support, maintenance, and updates for the websites and mobile apps after the initial development? We provide ongoing support, maintenance, and updates for websites and mobile apps. Our team is available to address any issues, implement updates, and provide technical assistance to ensure your digital products continue to operate smoothly and remain up-to-date.

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Inside Service Listing

< $25/hr

Hourly Rate
Inside Service Listing

$5,000 - $25,000

Min. Budget Size
Inside Service Listing

15 - 20

Team size
Inside Service Listing

London, UK

Location
SDNA Tech
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Claimed by Official Representatives

28

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

28

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
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Expertise Distribution (%)
  • 20% Blockchain Development

  • 20% Mobile App Development

  • 20% Software Development

  • 20% Web Development

  • 20% Artificial Intelligence

Your Digital Partner

SDNA Tech transforms concepts into real-world applications that are scalable, dependable, and appealing to consumers. We are inspired by your ideas and want to help you bring it to life.

View SDNA Tech Profile
Inside Service Listing

< $25/hr

Hourly Rate
Inside Service Listing

$10,000 - $15,000

Min. Budget Size
Inside Service Listing

100 - 1,501

Team size
Inside Service Listing

London, UK

Location

28

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

28

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
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Expertise Distribution (%)
  • 10% Blockchain Development

  • 20% Mobile App Development

  • 20% Software Development

  • 20% Web Development

  • 10% Web Design

  • 10% IT Services

  • 10% Artificial Intelligence

Unlock Tomorrow

This IT-leader provides qualified assistance in designing smart products and adopting the latest technology innovations. In less than a decade, Computools has become a major player in global markets and currently excels at coming up with the best solutions in cross-platform mobile app development. The other sides of Computools’s business activity touch upon the IoT, VR & AR, Fintech, Consulting and Consumer services, and game software development. The company’s approach involves customized consulting during which the client has an opportunity to get a tailor-made solution that fits their high-level goals and business ambitions best. Computools’s brand has been repeatedly awarded for deep expertise and excellent digital solutions many of which were produced in association with numerous European and international enterprises.

View Computools Profile
Inside Service Listing

$25-$49/hr

Hourly Rate
Inside Service Listing

$50,000+

Min. Budget Size
Inside Service Listing

50 - 249

Team size
Inside Service Listing

Serving in UK

Location
Verified Client Review

Verified Client Review

Custom Software Development for System Integrator

Reviewed by: Tokio Kuwamura, Director at Sakura-Communication View all 5 ReviewsView all Reviews

25

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

25

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
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Expertise Distribution (%)
  • 25% Blockchain Development

  • 25% Software Development

  • 25% Artificial Intelligence

  • 25% Cloud Computing Services

Make your ideas fly high with us.

Design Zilla, an AI-powered development consultancy, specializes in data-driven products and solutions for SMEs, focusing on end-to-end development. Established in 2019, they excel in AI use cases and development consultancy across various industries.

View Design Zilla Profile
Inside Service Listing

$50-$99/hr

Hourly Rate
Inside Service Listing

$25,000+

Min. Budget Size
Inside Service Listing

10 - 49

Team size
Inside Service Listing

Dundee, UK

Location
Verified Client Review

Verified Client Review

Web Dev, Design & Branding for Design Agency

Reviewed by: Shajjar Abbas Khan, Founder at Deminimalist.agency View all 2 ReviewsView all Reviews

22

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

22

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
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Expertise Distribution (%)
  • 25% Blockchain Development

  • 25% Software Development

  • 25% Web Development

  • 25% Artificial Intelligence

Outsource Innovations

Rendmate is an IT solutions provider that fosters clients' ideas into successful products, focusing on creativity, competence, and commitment. They offer services like product design, hardware and software architecture, and analysis. Rendmate's success is measured by their clients' success, spanning multiple business sectors.

View Rendmate Profile
Inside Service Listing

$50-$99/hr

Hourly Rate
Inside Service Listing

$25,000+

Min. Budget Size
Inside Service Listing

50 - 249

Team size
Inside Service Listing

London, UK

Location
Verified Client Review

Verified Client Review

Web Design for e-Commerce

Reviewed by: Boris Kagan, Senior Manager at Superior Promos View all 1 ReviewsView all Reviews

22

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

22

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
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Expertise Distribution (%)
  • 25% Blockchain Development

  • 25% Mobile App Development

  • 25% Software Development

  • 25% Web Development

Delivering Goals

InnotatzIT Solutions focuses on helping businesses transition from digital thinking to digital being, offering enterprise-wide automation using Salesforce platforms, delivering a fast-paced transformational experience, and building trust with clients. They believe effective solutions are created through collaboration and a focus on excellence.

View InnotatzIT Solutions Profile
Inside Service Listing

$25-$49/hr

Hourly Rate
Inside Service Listing

$10,000+

Min. Budget Size
Inside Service Listing

10 - 49

Team size
Inside Service Listing

Harrow, UK

Location
Verified Client Review

Verified Client Review

Custom Software Development for IT Service Company

Reviewed by: Christopher D'souza, Project Delivery Head at Aartechso Solutions View all 1 ReviewsView all Reviews

20

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

20

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
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Expertise Distribution (%)
  • 40% Blockchain Development

  • 30% Software Development

  • 30% Digital Marketing

Transforming AI into tangible business value

Halo is a London-based R&D organization that focuses on delivering high value outcomes with AI. They have an in-house team of industry experts who identify market trends and develop innovative solutions. They also focus on design, focusing on experience and robust engineering principles. Halo has over 10 years of experience working with clients globally in AI, Machine Learning, Cloud, and Data Science.

View Halo Technology Lab Ltd Profile
Inside Service Listing

$150-$199/hr

Hourly Rate
Inside Service Listing

$25,000+

Min. Budget Size
Inside Service Listing

10 - 49

Team size
Inside Service Listing

London, UK

Location

17

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

17

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
info
Expertise Distribution (%)
  • 10% Blockchain Development

  • 20% Mobile App Development

  • 20% Software Development

  • 20% Digital Marketing

  • 20% Artificial Intelligence

  • 10% Web Design

Empower your business with our expertly crafted bespoke software

Twin3's diverse IT and software development experience allows them to efficiently solve problems and build new applications, enabling them to solve problems at an accelerated pace.

View Twin3 Profile
Inside Service Listing

$25-$49/hr

Hourly Rate
Inside Service Listing

$50,000+

Min. Budget Size
Inside Service Listing

10 - 49

Team size
Inside Service Listing

Loughborough, UK

Location
Akxens
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agency_climbed
Claimed by Official Representatives

12

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

12

SF Score

SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology

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Services Provided
info
Expertise Distribution (%)
  • 20% Blockchain Development

  • 20% Mobile App Development

  • 20% Software Development

  • 10% Ecommerce Development

  • 10% Web Development

  • 10% Digital Marketing

  • 5% Digital Transformation

  • 5% Artificial Intelligence

transform ideas into Digital Solution

Akxens Inc. is a premier enterprise software engineering firm redefining the standards of digital transformation by bridging the critical gap between boutique agility and institutional scale. We specialize in architecting high-performance digital infrastructure—from custom ERP and CRM ecosystems to scalable SaaS platforms and secure financial ledgers—delivered with a "Zero-Latency" execution model. Unlike traditional outsourcing agencies, Akxens operates as a sovereign venture technology partner, deploying elite, pre-vetted engineering squads to convert complex business visions into robust, future-proof assets.

View Akxens Profile
Inside Service Listing

$25-$49/hr

Hourly Rate
Inside Service Listing

$1,000 - $50,000

Min. Budget Size
Inside Service Listing

50 - 150

Team size
Inside Service Listing

London, UK

Location

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