Businesses evaluating blockchain development partners in the UK can choose from specialist Web3 studios, software engineering firms, and large technology consultancies. The companies below were selected based on evidence of blockchain development capabilities and a current UK presence or clear UK market coverage. Services range from smart contracts and decentralized applications to enterprise blockchain, tokenization, digital wallets, and DeFi.
1. Itexus
Itexus develops custom blockchain software for financial and operational use cases, with particular depth in fintech. Its current blockchain offering covers custom blockchain systems, smart contract development and auditing, dApps, DeFi platforms, Web3 integrations, crypto wallets, permissioned blockchains, token development, and blockchain integration. The company also highlights a digital wallet ecosystem developed for Coinstar that supports digital asset trading, crypto-fiat conversion, bank-account linking, and online payments. Itexus serves UK clients and has development offices in Europe.
Key Facts
- Best for: Fintech and financial blockchain applications
- Core services: Blockchain software development, smart contracts, dApps, DeFi, wallets, tokenization, blockchain integration
- Specialization: Financial and enterprise software
- Industries: Fintech, financial services, digital assets
- Location: US headquarters with European development operations and UK market coverage
Contact Information
- Website: itexus.com
- Email: [email protected]
- Address: 8, The Green, STE road, Dover, DE 19901
- Facebook: www.facebook.com/itexus
- Instagram: www.instagram.com/itexus.soft
- LinkedIn: www.linkedin.com/company/itexus-fintech-software
- Twitter: x.com/ItexusSoft
2. A-listware
A-listware provides blockchain software development alongside broader application engineering and IT outsourcing services. Its published blockchain capabilities include blockchain networks, NFT platforms, security token issuance platforms, DeFi platforms, custom cryptocurrencies, crypto wallets, dApps, DAOs, cross-chain bridges, and smart contracts. The company also describes a full development process covering planning, business case development, architecture, MVP launch, development, testing, deployment, and support. A-listware maintains a UK location in St. Leonards-on-Sea and provides services internationally.
Key Facts
- Best for: Businesses combining blockchain development with broader software engineering
- Core services: Blockchain networks, smart contracts, dApps, wallets, DeFi, NFTs, DAOs
- Specialization: Custom software and distributed engineering
- Location: St. Leonards-on-Sea, UK
- Notable strength: End-to-end development and post-launch support
Contact Information
- Website: a-listware.com
- Email: [email protected]
- Phone: +44 (0)142 439 01 40
- Address: St. Leonards-On-Sea, TN37 7TA, UK
- Facebook: www.facebook.com/alistware
- LinkedIn: www.linkedin.com/company/a-listware
3. Tech Alchemy
Tech Alchemy is a London-based software development studio with a strong focus on blockchain and Web3 products. Its published capabilities include smart contracts, dApps, NFT marketplaces, token-enabled products, DeFi applications, and blockchain-based financial products. The company works with technologies including Ethereum, Polygon, Binance, and Tron and has positioned much of its blockchain work around fintech, digital assets, and emerging applications. Its London base makes it a natural option for UK businesses seeking a specialist blockchain engineering team.
Key Facts
- Best for: Web3 products, DeFi, and digital asset applications
- Core services: Blockchain development, smart contracts, dApps, NFTs, DeFi
- Specialization: Web3 and fintech products
- Industries: Fintech, digital assets, marketplaces
- Location: London, UK
Contact Information
- Website: techalchemy.co.uk
- Email: [email protected]
- Phone: +44 203 405 7811
- Address: 86-90 Paul Street London, EC2A 4NE
- LinkedIn: www.linkedin.com/company/tech-alchemy-ltd
- Instagram: www.instagram.com/techalchemy
- Facebook: www.facebook.com/beanalchemist
- Twitter: x.com/techalchemy
4. Limeup
Limeup offers blockchain development from its London operation, with services covering smart contracts, DAO development, dApps, DeFi, cryptocurrency creation, wallets, payments, lending, staking, blockchain-based web and mobile applications, digital networks, and supply-chain solutions. The company also publishes blockchain case studies, including a real estate tokenization platform and an NFT marketplace. Its wider software engineering offering includes mobile development, QA, DevOps, UI/UX, and custom software, which can be useful when blockchain functionality needs to be integrated into a broader product.
Key Facts
- Best for: Custom blockchain products and Web3 applications
- Core services: Smart contracts, dApps, DeFi, wallets, tokenization, blockchain apps
- Specialization: Custom software and blockchain product development
- Industries: Finance, real estate, healthcare, logistics, iGaming
- Location: London, UK
Contact Information
- Website: limeup.io
- Email: [email protected]
- Phone: +44 20 3807 8245
- Address: Queens House, 180 Tottenham Ct Rd, London W1T 7PD
- LinkedIn: www.linkedin.com/company/limeup
- Instagram: www.instagram.com/limeup.io
- Facebook: www.facebook.com/limeup.io
- Twitter: x.com/limeup_io
5. PixelPlex
PixelPlex has operated a London-based entity since 2021 and provides blockchain development and consulting internationally. Its blockchain portfolio includes smart contracts, NFT platforms, marketplaces, DeFi tools, dApps, Web3 applications, wallets, and enterprise blockchain systems. The company works across Ethereum, Hyperledger, Flow, Solana, Cardano, and Polkadot, among other platforms. Its Hyperledger practice covers architecture, chaincode, application development, infrastructure, testing, deployment, and migration, making the firm relevant to both enterprise and public blockchain projects.
Key Facts
- Best for: Enterprise blockchain and multi-chain Web3 projects
- Core services: Blockchain development, smart contracts, Hyperledger, Web3, wallets, DeFi
- Specialization: Multi-platform blockchain engineering
- Industries: Fintech, healthcare, retail, supply chain, real estate
- Location: London, UK, with international offices
Contact Information
- Website: pixelplex.io
- Email: [email protected]
- Phone: +44 20 4538 8887
- Address: Kemp House, 124 City Road, UK
- LinkedIn: www.linkedin.com/company/pixelplex-inc
- Facebook: www.facebook.com/pixelplex.inc
- Twitter: x.com/pixelplexinc
6. Andersen
Andersen provides blockchain software development as part of its financial technology and custom software engineering services. Its capabilities include crypto swaps, blockchain payment solutions, dApps, blockchain marketplaces, DeFi lending, crypto payment infrastructure, smart contracts, NFTs, and digital wallets. The company also reports dedicated dApp and blockchain engineering resources and supports major platforms including Ethereum, Solana, Binance, and Polkadot. Andersen has a London representative office, giving UK buyers a local point of presence.
Key Facts
- Best for: Financial services and complex enterprise blockchain projects
- Core services: Blockchain software, dApps, DeFi, smart contracts, crypto applications
- Specialization: Fintech and digital asset systems
- Industries: Financial services, real estate, logistics, gaming
- Location: London, UK, with global delivery operations
Contact Information
- Website: andersenlab.com
- Email: [email protected]
- Phone: +44 207 048 6755
- Address: 1 St Katharine’s Way, 6th floor, London E1W 1YL, UK
- LinkedIn: www.linkedin.com/company/andersen-softwaredev
- Facebook: www.facebook.com/AndersenSoftwareDev
- Twitter: x.com/AndersenLabs
7. Deloitte UK
Deloitte UK approaches blockchain from an enterprise consulting and technology implementation perspective. Its blockchain practice covers strategic advisory, training, assisted prototyping, and delivery of production-ready enterprise solutions. Deloitte also develops blockchain-related applications around areas such as digital identity and business processes. This makes the firm more suitable for organizations that need blockchain strategy, governance, enterprise architecture, and implementation support rather than only smart contract coding.
Key Facts
- Best for: Enterprise blockchain strategy and implementation
- Core services: Blockchain advisory, prototyping, enterprise solutions, digital identity
- Specialization: Enterprise transformation and consulting
- Industries: Financial services, government, technology, enterprise sectors
- Location: UK
Contact Information
- Website: www.deloitte.com
- Phone: +44 (0)20 7936 3000
- Address: 1 New Street Square London, EC4A 3HQ United Kingdom
- LinkedIn: www.linkedin.com/company/deloitte
- Facebook: www.facebook.com/DeloitteUK
- Twitter: x.com/deloitteuk
8. Netguru
Netguru provides blockchain development and consulting as part of its wider software engineering offering. Its blockchain services cover dApps, smart contracts, crypto wallets, private blockchain solutions, consultation, application development, deployment, testing, and support. The company also offers DeFi development using technologies such as Solidity and Rust. Netguru has a substantial UK client base and operates internationally, making it relevant to UK companies that want blockchain capabilities alongside broader product development, cloud, data, and engineering services.
Key Facts
- Best for: Blockchain projects requiring broader product engineering
- Core services: Blockchain development, consulting, smart contracts, dApps, DeFi
- Specialization: Product engineering and digital transformation
- Industries: Finance, healthcare, retail, real estate, technology
- Location: International delivery with UK market coverage
Contact Information
- Website: www.netguru.com
- Email: [email protected]
- Address: ul. Małe Garbary 9, 61-756 Poznań, Poland
- LinkedIn: www.linkedin.com/company/netguru
9. Accenture
Accenture provides blockchain and Web3 capabilities within its broader digital transformation and financial services practices. Its UK offering addresses decentralized solutions designed to improve areas such as security, transparency, and operational efficiency. Accenture has also operated a FinTech Innovation Lab in London supporting companies working with emerging technologies including blockchain and distributed ledger technology. The firm is particularly relevant to large organizations that need blockchain strategy and implementation connected to wider enterprise transformation programs.
Key Facts
- Best for: Large enterprise blockchain and digital transformation programs
- Core services: Blockchain and Web3, consulting, technology implementation
- Specialization: Enterprise transformation
- Industries: Financial services and other large enterprise sectors
- Location: UK and global
Contact Information
- Website: www.accenture.com
- Phone: +441172872344
- Address: Runway East Temple Meads, 101 Victoria Street, Bristol, Bristol City, United Kingdom, BS1 6PU
10. Capgemini
Capgemini UK combines blockchain expertise with software engineering, consulting, and financial services transformation. Its UK materials describe blockchain and distributed ledger technology as central components of its “Decentralised Futures” work, with particular attention to financial services, digital assets, DeFi, and related applications. Capgemini also provides digital and software engineering services and maintains offices across the UK, including London, Birmingham, Bristol, Glasgow, Leeds, and other locations.
Key Facts
- Best for: Enterprise blockchain and financial services transformation
- Core services: Blockchain strategy, software engineering, digital transformation
- Specialization: Decentralized finance and enterprise technology
- Industries: Banking, capital markets, financial services
- Location: Multiple UK offices
Contact Information
- Website: www.capgemini.com
- Phone: 0330 588 8000
- Address: 95 Queen Victoria Street, London, EC4V 4HN
- LinkedIn: www.linkedin.com/company/capgemini
- Instagram: www.instagram.com/capgemini_uk
- Facebook: www.facebook.com/CapgeminiUK
11. EPAM
EPAM combines blockchain capabilities with large-scale software engineering, cloud, consulting, and digital transformation. Its blockchain practice has worked on distributed ledger technology, prototypes, and enterprise use cases, while its UK organization provides software engineering and consulting services from offices including London and Newcastle. EPAM’s UK operation supports financial services, healthcare, insurance, retail, software, travel, and other sectors. This combination makes it relevant to organizations where blockchain forms part of a wider modernization or enterprise engineering program.
Key Facts
- Best for: Large-scale software engineering and blockchain transformation
- Core services: Blockchain engineering, software development, cloud, consulting
- Specialization: Enterprise technology and digital transformation
- Industries: Financial services, healthcare, insurance, retail, software
- Location: London and Newcastle, UK
Contact Information
- Website: www.epam.com
- Address: 9 Devonshire Square, EC2M 4YF, London, UK
- Phone: +44-203-514-0027
- LinkedIn: www.linkedin.com/company/epam-systems
- Instagram: www.instagram.com/epamsystems
- Facebook: www.facebook.com/EPAM.Global
11. Thoughtworks
Thoughtworks is a technology consultancy with UK offices in London, Manchester, and Newcastle. Its UK client portfolio includes blockchain work, including the VAKT platform, while the company combines software engineering, architecture, data, and digital transformation capabilities. Thoughtworks is a particularly relevant option when blockchain is one component of a larger engineering challenge involving distributed systems, enterprise modernization, or complex technology strategy.
Key Facts
- Best for: Blockchain projects embedded in broader enterprise engineering
- Core services: Software engineering, technology consulting, blockchain
- Specialization: Complex digital systems and transformation
- Industries: Financial services, energy, manufacturing, retail, public sector
- Location: London, Manchester, and Newcastle, UK
Contact Information
- Website: www.thoughtworks.com
- Email: [email protected]
- Address: Endeavour House, 3rd Floor 179-199 Shaftesbury Avenue London, England, WC2H 8JR
- LinkedIn: www.linkedin.com/company/thoughtworks
- Instagram: www.instagram.com/thoughtworks
- Facebook: www.facebook.com/Thoughtworks
- Twitter: x.com/thoughtworks
12. Systango
Systango is a software engineering company with a London presence and a substantial blockchain development offering. Its blockchain services include NFT development, smart contract implementation, DeFi development, decentralized exchange integration, token launches, and multi-chain solutions. Published information identifies experience with Ethereum, Polygon, Binance Smart Chain, Solana, Tron, Flow, and Hyperledger. The company’s broader software development background makes it relevant for blockchain products that also require conventional web, mobile, backend, or platform engineering.
Key Facts
- Best for: Multi-chain Web3 products and blockchain-enabled applications
- Core services: Blockchain development, NFTs, smart contracts, DeFi, DEX integration
- Specialization: Web3 and custom software engineering
- Industries: Financial services, gaming, hospitality, technology
- Location: London, UK, with international delivery
Contact Information
- Website: www.systango.com
- Email: [email protected]
- LinkedIn: www.linkedin.com/company/systango
13. Pixelette Technologies
Pixelette Technologies is a London-based software development company with blockchain among its core technology services. Its published capabilities include blockchain development alongside AI, web, mobile, software, and mixed-reality development. The company’s blockchain work covers enterprise applications and projects across industries such as fintech, healthcare, automotive, education, media, and entertainment. It can therefore suit companies that need blockchain functionality combined with conventional application engineering and product development.
Key Facts
- Best for: Blockchain products combined with wider application development
- Core services: Blockchain, software, web and mobile development
- Specialization: Custom digital products
- Industries: Fintech, healthcare, automotive, education, media
- Location: London, UK
Contact Information
- Website: pixelettetech.com
- Email: [email protected]
- Phone: +44 2045188226
- Address: 77 Fulham Palace Road London, W6 8JA
- LinkedIn: www.linkedin.com/company/pixelettetechnologies
- Instagram: www.instagram.com/pixelettetechnologies
- Facebook: www.facebook.com/pixelette.technologies
- Twitter: x.com/Pixelette__Tech
14. Apriorit
Apriorit provides blockchain-based software design and development alongside cybersecurity and penetration testing. Its published blockchain expertise includes smart contracts, blockchain API applications, private networks, Web3, NFTs, DeFi, blockchain infrastructure, and consulting. The company lists support for platforms such as Ethereum, Hyperledger Fabric, Solana, Polkadot, Cardano, Tezos, and Starknet, as well as programming technologies including Solidity, Rust, Go, C++, and others.
Key Facts
- Best for: Security-sensitive blockchain and Web3 applications
- Core services: Blockchain development, smart contracts, Web3, DeFi, security testing
- Specialization: Cybersecurity and blockchain engineering
- Technologies: Ethereum, Hyperledger, Solana, Polkadot, Cardano, Tezos, Starknet
- Location: International delivery with UK market coverage
Contact Information
- Website: www.apriorit.com
- Email: [email protected]
- Phone: +1 714 584 0295
- Address: 20 Central Ave, Unit 505 Lynn, MA 01901, USA
- LinkedIn: www.linkedin.com/company/apriorit
- Facebook: www.facebook.com/apriorit
- Twitter: x.com/apriorit
Conclusion
The UK blockchain development market includes both specialist Web3 companies and established software engineering firms, giving businesses several options depending on project complexity and goals. When comparing providers, consider their experience with the specific blockchain platform you need, smart contract and security capabilities, relevant industry expertise, and ability to support the product beyond initial development. Itexus and A-listware are among the options for companies seeking custom blockchain development alongside broader software engineering capabilities, while larger consultancies may be better suited to enterprise transformation programs. The right partner ultimately depends on your technical requirements, regulatory environment, project scope, and long-term support needs.