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Published: Aug 26, 2026

15 Best AI Software Development Companies for Fintech in UK (2026)

August 26, 2026
Read 19 min

AI has become much more practical in fintech over the last few years. It is no longer just about adding a chatbot to an app. Financial companies are using AI for fraud detection, credit scoring, document processing, risk modelling, predictive analytics, customer support, and plenty of behind-the-scenes work that customers never see.

Building those features is one thing. Making them work reliably inside an actual financial product is another. Fintech software often has to connect with payment infrastructure, banking APIs, KYC and AML services, legacy systems, and tightly controlled data. Security, auditability, explainability, and regulatory requirements all come into the picture pretty quickly.

The companies below approach that challenge in different ways. Some have a strong background in financial platforms and integrations, while others lean more heavily into AI, machine learning, data engineering, or product development. Here is a closer look at what each one actually does.

1. Itexus

At Itexus, we work on fintech products where AI can be built directly into the software rather than added later as a separate feature. Our financial experience covers banking, payments, lending, investment management, trading, insurance, and related areas. On the AI side, we work with RAG systems, AI copilots, predictive analytics, fraud and anomaly detection, document processing, credit scoring, recommendations, and workflow automation. Depending on the problem, we can combine generative AI with more traditional machine learning.

A fair amount of our work also happens behind the scenes. We deal with banking and payment APIs, KYC and AML services, brokers, market data feeds, and older financial systems that still need to remain part of the product. For AI projects, that means looking at the architecture and data first, then considering security, testing, explainability, and compliance. We also use AI-assisted tools during development for coding, testing, refactoring, and documentation, while keeping technical review in human hands. For financial companies in the UK, we apply this approach to the specific requirements and challenges of the UK fintech market.

Key Highlights:

  • AI development for financial products and operations
  • Experience across banking, trading, lending, payments, wealth management, and insurance
  • Generative AI and traditional machine learning
  • AI-ready architecture and data planning
  • Focus on security, auditability, and regulated workflows
  • Integration with financial APIs, data providers, and legacy systems

Services:

  • AI software development for fintech 
  • AI consulting and implementation
  • RAG and LLM development
  • AI copilots and conversational systems
  • Fraud and anomaly detection
  • Credit scoring and risk modelling
  • Predictive analytics and forecasting
  • Document intelligence
  • AI workflow automation
  • Custom fintech software development
  • Fintech API and system integration
  • Legacy system modernisation
  • QA, DevOps, and post-launch support

Contact Information:

2. A-listware

A-listware takes a somewhat broader engineering approach. Instead of concentrating only on standalone AI products, they provide development teams and technical specialists who can join an existing project or help build one from the ground up. Their industry coverage includes fintech, banking, payments, lending, insurance, and investment, while their technology work covers machine learning, data analytics, RPA, big data, cloud technologies, and intelligent platforms.

That setup may be useful for a fintech company that already knows what it wants to build but has gaps in its internal team. Rather than hiring only for an AI component, a project can involve ML engineers, data specialists, software developers, QA engineers, infrastructure specialists, or other roles as needed. Their published work also includes an AI-powered platform that uses voice assistant technology.

Key Highlights:

  • Machine learning and AI among their technical areas
  • Experience in fintech, banking, payments, lending, investment, and insurance
  • Flexible engineering team model
  • Data analytics and intelligent automation
  • Cloud and on-premises environments
  • QA and security services alongside development

Services:

  • Software development
  • Machine learning and AI
  • Data analytics
  • Intelligent platforms and RPA
  • Dedicated development teams
  • Application development
  • Cloud solutions
  • Testing and QA
  • Test automation
  • Cybersecurity
  • Infrastructure services
  • IT consulting

Contact Information:

  • Website: a-listware.com  
  • E-mail: [email protected] 
  • Facebook: www.facebook.com/alistware
  • LinkedIn: www.linkedin.com/company/a-listware
  • Address: St. Leonards-On-Sea, TN37 7TA, UK 
  • Phone: +44 (0)142 439 01 40 

3. Andersen

Andersen’s fintech work stretches across digital banking, payments, personal finance, lending, digital wallets, cryptocurrency, and open banking. They work on new financial products as well as existing systems that need new functionality or technical changes. API integrations, cloud infrastructure, data protection, and security are also part of the picture, which matters when AI tools need access to transaction data or banking services.

Their AI-related financial work includes fraud prevention, intelligent applications, and process automation. They also work with robotic process automation and software used in regulated financial workflows. So the job does not necessarily stop once an AI model has been created. They can also handle the application around it, the integrations it depends on, and the processes needed to make the feature useful in day-to-day financial operations.

Key Highlights:

  • Fintech development across several financial product categories
  • API integration and open banking
  • Cloud-based financial systems
  • Financial security and data protection
  • AI applications for fraud prevention and automation
  • Experience with compliance-sensitive software

Services:

  • Custom fintech software development
  • Personal finance software
  • Lending software
  • Payment solutions
  • Digital wallet development
  • Cloud fintech development
  • Open banking development
  • Finance process automation
  • Cryptocurrency software
  • Compliance solutions
  • Banking software
  • Financial system integration

Contact Information:

  • Website: andersenlab.co.uk
  • E-mail: [email protected]
  • Facebook: www.facebook.com/AndersenSoftwareDev
  • Twitter: x.com/AndersenLabs
  • LinkedIn: www.linkedin.com/company/andersen-lab
  • Instagram: www.instagram.com/andersen.global
  • Address: 1 St Katharine’s Way, 6th floor, London E1W 1YL, UK 
  • Phone: +44 207 048 6755 

4. Itransition

Itransition develops software for banking, insurance, wealth management, and other parts of the financial sector. Their work is not limited to customer apps. They also build the internal systems financial organisations use to manage everyday operations, including core banking platforms, financial management software, banking portals, CRM systems, and mobile applications.

Automation is another noticeable part of their financial offering. In insurance, for example, they work with claim management, policy administration, intelligent quoting, underwriting automation, billing, and business process management. That background can matter when AI is supposed to become part of a larger workflow rather than exist as a separate tool that employees have to use alongside everything else.

Key Highlights:

  • Financial software across several fintech areas
  • Banking and financial management systems
  • Customer-facing and internal platforms
  • Workflow and process automation
  • Insurance software with automated decision processes
  • Integration of new functionality into broader financial operations

Services:

  • Fintech software development
  • Core banking platforms
  • Mobile banking applications
  • Banking portals
  • Financial management software
  • Banking CRM
  • Claim management software
  • Policy administration systems
  • Intelligent quoting software
  • Underwriting automation
  • Business process management software
  • Insurance portals

Contact Information:

  • Website: www.itransition.com
  • E-mail: [email protected] 
  • Facebook: www.facebook.com/Itransition
  • Twitter: x.com/itransition
  • LinkedIn: www.linkedin.com/company/itransition
  • Address: Office 3-01, 3rd Floor, 3 Shortlands, London, W6 8DA
  • Phone: +44 7949 997 881

5. GoodCore

GoodCore builds custom software for organisations in banking, insurance, investment, trading, lending, and consumer finance. Their fintech projects range from completely new products to the modernisation of systems that have been running for years. Product development, API integration, cloud migration, legacy updates, and ongoing support all sit within their wider engineering offering.

AI is part of that work too. One useful angle is their ability to introduce AI into existing critical software rather than requiring a company to replace the whole platform first. For an established financial business, that can be a much more realistic route. The surrounding engineering work, including integration, testing, deployment, maintenance, and changes to existing systems, can be handled alongside the AI component.

Key Highlights:

  • Custom software for financial organisations
  • AI integration with existing critical systems
  • Legacy software modernisation
  • API and third-party integrations
  • Cloud migration
  • Security and compliance considered during development

Services:

  • AI consulting and advisory
  • AI integration into existing software
  • Bespoke fintech software development
  • Fintech product development
  • Platform development
  • Legacy system modernisation
  • Cloud migration
  • API and system integration
  • Digital transformation
  • SaaS development
  • Software project takeover
  • Maintenance and support

Contact Information:

  • Website: www.goodcore.co.uk 
  • E-mail: [email protected]
  • Facebook: www.facebook.com/goodcoresoftware
  • LinkedIn: www.linkedin.com/company/goodcore-software
  • Address: Airport House, Purley Way, Croydon CR0 0XZ, 
  • Phone: 020 8781 6903 

6. Chetu

Chetu works on financial software for accounting, trading, insurance, tax, investment management, and related operations. Their AI capabilities are tied to those systems and include predictive modelling, robo-advisory applications, conversational interfaces, financial reporting, investment analysis, and decision-support tools.

They also cover the less glamorous but essential technical work around those features. APIs, existing business platforms, financial data processing, and system integrations all need to function properly before an AI tool becomes genuinely useful. Their broader financial development work includes trading platforms with real-time analytics, portfolio management systems, insurance applications, accounting software, and tax solutions.

Key Highlights:

  • AI integrated into financial workflows
  • Accounting, trading, insurance, tax, and investment software
  • Predictive modelling and financial analytics
  • Conversational AI
  • Automated reporting and decision support
  • Existing finance platform and API integration
  • Support for financial compliance requirements

Services:

  • AI-powered financial automation
  • Robo-advisor development
  • Predictive analytics
  • Conversational AI and chatbots
  • Financial data analysis
  • AI-driven investment software
  • Financial decision support systems
  • Automated financial reporting
  • Trading software development
  • Portfolio management software
  • Accounting software development
  • Insurance software development
  • Tax software development
  • Support and maintenance

Contact Information:

  • Website: www.chetu.com
  • E-mail: [email protected] 
  • Facebook: www.facebook.com/ChetuInc
  • Twitter: x.com/ChetuInc
  • LinkedIn: www.linkedin.com/company/chetu-inc-
  • Address: Cobalt Square 83 Hagley Road, Part 1 First Floor Birmingham, B168QG United Kingdom
  • Phone: +44 137 243 2466 

7. Software Planet Group

Software Planet Group develops software for asset management, fund management, payments, accounting, trading, investment, insurance, and regulatory technology. AI and machine learning are part of their technology stack, alongside work involving KYC, reporting, digital wallets, smart contracts, cryptocurrency platforms, financial integrations, and automated data exchange.

There is a strong data angle to their financial work as well. They develop data warehouses, reporting systems, investment tracking applications, financial modelling tools, and software for handling different projections and financial scenarios. Compliance automation is another part of the offering, including KYC, customer due diligence, tax reporting, and regulatory monitoring. In practice, that gives AI and ML functions a wider financial system to plug into.

Key Highlights:

  • AI and machine learning within their technology stack
  • Financial software for investment, accounting, payments, and insurance
  • Financial data processing and reporting
  • KYC and compliance automation
  • Open banking and payment integrations
  • Blockchain and digital asset development
  • Full-stack financial software engineering

Services:

  • Artificial intelligence development
  • Machine learning development
  • Asset management software
  • Fund management software
  • Financial data warehousing
  • Payment processing solutions
  • Trading and investment platforms
  • Accounting software development
  • Financial reporting systems
  • Regulatory compliance software
  • KYC and customer due diligence tools
  • Blockchain development
  • Digital wallet development
  • Cryptocurrency exchange development
  • Third-party financial integrations

Contact Information:

  • Website: softwareplanetgroup.co.uk 
  • E-mail: [email protected] 
  • Facebook: www.facebook.com/softwareplanetgroup
  • Linkedin: www.linkedin.com/company/software-planet-group
  • Address: Austen House, 1 Station View, Guildford, Surrey, GU1 4AR 
  • Phone: +44 1483 802423

8. TechMagic

TechMagic works on fintech products ranging from consumer banking apps to more complex trading and order management platforms. Their financial portfolio covers digital banking, wallets, trading, cryptocurrency exchanges, blockchain, wealth management, payments, insurance, and asset management. Projects can start at the discovery stage and continue through design, engineering, testing, and deployment.

For AI-heavy products, the wider engineering capabilities are worth considering because intelligent features rarely operate on their own. TechMagic also works with real-time transaction monitoring, financial insights, secure financial applications, cloud architecture, backend and frontend development, QA, business analysis, and product design. That gives the AI component somewhere practical to live instead of leaving it as a disconnected proof of concept.

Key Highlights:

  • Banking, trading, payment, and investment software
  • Support for early-stage concepts and larger fintech systems
  • Real-time financial and transaction processing
  • Secure financial applications
  • Cloud, backend, frontend, and QA capabilities
  • Digital asset and blockchain development
  • Full product development lifecycle

Services:

  • Fintech software development
  • Digital banking platforms
  • Mobile banking applications
  • Trading platform development
  • Digital wallet development
  • Wealth management software
  • Payment processing applications
  • Asset management software
  • Cryptocurrency exchange development
  • Blockchain applications
  • Insurance software
  • Financial product discovery
  • Cloud engineering
  • Testing and QA

Contact Information:

  • Website: www.techmagic.co
  • E-mail: [email protected]
  • Facebook: www.facebook.com/TechMagic.co
  • LinkedIn: www.linkedin.com/company/techmagic
  • Instagram: www.instagram.com/techmagic
  • Address: 41 Devonshire Street W1G 7AJ, London, UK 

9. STX Next

STX Next combines software engineering with AI, machine learning, data engineering, and cloud development. Fintech is one of the industries they work with, and their approach to AI is fairly practical: use it where it can automate work, make better use of data, or solve a specific business problem.

That combination makes sense for financial products where the quality and availability of data matter just as much as the model itself. STX Next can also work on the rest of the application, including web and mobile development, cloud infrastructure, DevOps, QA, and product design. Companies that already have an engineering department can use their team extension model to bring in extra AI, data, or development specialists.

Key Highlights:

  • Artificial intelligence and machine learning
  • Data engineering
  • Fintech industry experience
  • Cloud and DevOps support
  • End-to-end software development
  • Team extension for existing engineering departments
  • QA within the development process

Services:

  • Artificial intelligence development
  • Machine learning
  • Data engineering
  • Fintech software development
  • AI consulting
  • End-to-end product development
  • Web development
  • Mobile development
  • Cloud services
  • DevOps
  • Testing and QA
  • Product design
  • Team extension
  • Technical due diligence

Contact Information:

  • Website: www.stxnext.com
  • E-mail: [email protected] 
  • Facebook: www.facebook.com/StxNext
  • LinkedIn: www.linkedin.com/company/stx-next-ai-solutions
  • Instagram: www.instagram.com/stx_next
  • Address: 10 York Rd London SE1 7ND United Kingdom 

10. Intellectsoft

Intellectsoft develops software for banking and financial services, and AI and machine learning are included directly in their finance offering. Their work covers predictive systems, recommendation engines, natural language processing, computer vision, data mining, and analytics. They also apply AI in trading and securities, where automation can sit alongside brokerage software and market-facing applications.

Beyond AI, their fintech services include online banking, digital wallets, lending, payments, data platforms, blockchain, and robotic process automation. That broader coverage matters because a financial AI feature still needs data, integrations, transaction systems, security, and a usable interface around it. Their RPA work also covers repetitive processes such as account reconciliation, reviews, and regulatory reporting.

Key Highlights:

  • AI and machine learning for financial software
  • Predictive and recommendation systems
  • Natural language processing and computer vision
  • Data mining and financial analytics
  • AI-assisted trading and automation
  • Banking, wallet, lending, and payment development
  • RPA for financial operations

Services:

  • AI and machine learning development
  • Predictive systems
  • Recommendation systems
  • Natural language processing
  • Computer vision
  • Data mining and analytics
  • AI-assisted trading automation
  • Robotic process automation
  • Online banking development
  • Digital wallet development
  • Lending software
  • Payment software
  • Data platform development
  • Blockchain and smart contract development

Contact Information:

  • Website: www.intellectsoft.net
  • E-mail: [email protected] 
  • Facebook: www.facebook.com/Intellectsoft
  • Twitter: x.com/Intellectsoft
  • LinkedIn: www.linkedin.com/company/intellectsoft
  • Address: 1 Poultry, London, EC2R 8EJ, UK 
  • Phone: +44 20 3887 0078 

11. DataArt

DataArt works on projects where financial software, data, cloud infrastructure, and AI tend to overlap. For financial organisations, that can mean developing a new product from scratch or modernising a system that is already deeply embedded in day-to-day operations. Their capabilities include custom software engineering, AI, analytics, data work, and cloud transformation.

Their financial technology experience reaches into areas such as asset management, insurance, regulated trading, enterprise data architecture, and AI-assisted development. That breadth is particularly relevant for projects with a lot of existing infrastructure or large volumes of financial data. Instead of looking at AI as the whole project, they can work on the systems and integrations around it too.

Key Highlights:

  • Custom software engineering for complex systems
  • Finance, insurance, and regulated technology experience
  • Data and analytics
  • AI and machine learning development
  • Cloud migration and infrastructure optimisation
  • Legacy system modernisation
  • Partnerships with AWS, Google Cloud, Microsoft, and Salesforce

Services:

  • Custom software development
  • Financial software development
  • AI and machine learning
  • Data engineering and analytics
  • Cloud transformation
  • Application modernisation
  • Systems integration
  • Software support and product evolution

Contact Information:

  • Website: www.dataart.com
  • E-mail: [email protected]
  • Facebook: www.facebook.com/DataArt
  • Twitter: x.com/DataArt
  • LinkedIn: www.linkedin.com/company/dataart
  • Address: 55 King William Street, 3rd floor, London, EC4R 9AD 
  • Phone: +44 (0) 20 7099 9464 

12. Bytes Technolab

Bytes Technolab provides fintech development for banks, startups, and other financial organisations in the UK. Their work ranges from MVPs built to test an idea to larger platforms that can grow as the product develops. Digital wallets, lending solutions, payment applications, financial management systems, and custom finance platforms are all part of their fintech offering.

Their technology coverage also includes AI, machine learning, blockchain, cloud computing, RPA, and conversational tools. They handle consulting, UX design, development, integration, maintenance, and AI model fine-tuning, so there is room to work on more than just the intelligent feature itself. Security, compliance, and financial data handling are also included in their approach.

Key Highlights:

  • Fintech development for the UK market
  • MVP and full-scale product development
  • Digital wallet and payment software
  • AI-based risk and fraud detection
  • Financial data security and compliance
  • Cloud, blockchain, and automation technologies
  • Maintenance after launch

Services:

  • Fintech software consulting
  • Finance MVP development
  • Custom fintech platform development
  • Mobile and web app development
  • Digital wallet development
  • Financial management systems
  • Software integration
  • AI model development and fine-tuning
  • Maintenance and support

Contact Information:

  • Website: www.bytestechnolab.com
  • E-mail: [email protected]
  • Facebook: www.facebook.com/bytestechnolabofficial
  • Twitter: x.com/btechnolab
  • LinkedIn: www.linkedin.com/company/bytes-technolab
  • Instagram: www.instagram.com/bytestechnolabofficial
  • Address: DOCK, 75 Exploration Drive, LEICESTER, LE4 5NU 
  • Phone: + 44 792 0047249 

13. Foundry 5

Foundry 5 is a development studio covering AI, web, mobile, and custom software. A noticeable part of their approach is working with clearly scoped products and MVPs. That can suit a fintech startup that wants to find out whether an idea works before investing in a much larger platform. It can also work for established teams that simply need a focused custom application.

They have direct fintech experience in their portfolio. One example is Gather, a multi-currency retail investment platform developed for an FCA-regulated environment. Beyond fintech, their capabilities include AI systems, full-stack web development, mobile apps, UX/UI, and bespoke software. Documentation, testing, security reviews, and architecture planning are also part of the process, which becomes more important once an MVP starts turning into a long-term product.

Key Highlights:

  • Fintech product development experience
  • Work on an FCA-regulated investment platform
  • Web and mobile development
  • AI development
  • MVP-focused delivery
  • UX/UI design
  • Testing, security, and scalable architecture

Services:

  • Fintech software development
  • MVP development
  • AI development
  • Web application development
  • Mobile app development
  • UX/UI design
  • Custom software development
  • Product testing and performance optimisation

Contact Information:

  • Website: foundry-5.com
  • E-mail: [email protected] 
  • LinkedIn: www.linkedin.com/company/foundry-5
  • Instagram: www.instagram.com/foundry.5
  • Address: 5 St. John’s Lane, London, EC1M 4BH 
  • Phone: 02031938835

14. Atomise

Atomise focuses on software engineering for fintech, SaaS, custom applications, and regulated organisations. They work with startups, SMEs, and enterprise teams, so the scope can range from getting an early product off the ground to keeping an established platform running while it is being modernised. Their fintech background includes wealth technology, payments, transaction systems, and software used in regulated environments.

They are not limited to new builds either. Architecture modernisation, cloud infrastructure, system integrations, project recovery, and AI solutions are also part of their work. One example is their support for SS&C Hubwise in a live regulated environment. That combination may be useful when an organisation cannot simply switch off an older platform and start again, which is a pretty common reality in financial software.

Key Highlights:

  • Fintech software experience
  • Work with regulated financial organisations
  • Wealth platform experience
  • Payment and transaction systems
  • Architecture modernisation
  • AWS cloud and infrastructure work
  • AI development using business data
  • Support for existing live platforms

Services:

  • Fintech software development
  • Custom software development
  • Web application development
  • Mobile app development
  • AI solutions
  • Cloud and DevOps
  • Systems integration
  • Architecture modernisation
  • SaaS development
  • Platform support and scaling

Contact Information:

  • Website: atomise.com
  • E-mail: [email protected] 
  • Facebook: www.facebook.com/atomiseHQ
  • Twitter: x.com/atomiseHQ
  • LinkedIn: www.linkedin.com/company/atomise-limited
  • Instagram: www.instagram.com/atomisehq
  • Address: 18 Blake Street, York, YO1 8QG 
  • Phone: +44 7760 178880 

15. Tech Dot

Tech Dot focuses specifically on software for financial services, working with banks, lenders, fintech companies, and other organisations that handle financial operations. Their work covers custom software, cloud-native platforms, banking systems, lending products, and trading platforms. AI is also built into their financial offering rather than treated as a separate technology area. They develop AI solutions for tasks such as document classification, report processing, anomaly detection, and operational automation.

Their work also covers the systems around those AI features. Tech Dot develops banking and lending software, integrates with core banking platforms, and works with APIs, workflow engines, decision systems, and cloud infrastructure. Their AI-powered CoreLink platform, for example, allows banking teams to interact with core banking systems through AI assistants while keeping human approval in the loop. They also build automated workflows for loan origination, credit decisioning, KYC, customer onboarding, and other financial processes. This makes their offering particularly relevant for fintech projects where AI needs to become part of an existing financial workflow rather than operate as a standalone tool.

Key Highlights:

  • AI and intelligent automation for financial services
  • Software development for banks, lenders, and fintech companies
  • AI-powered banking and operational platforms
  • Loan origination and credit decisioning
  • KYC and customer onboarding automation
  • Core banking integrations and cloud-native systems
  • Workflow and decision automation
  • Experience with trading and financial platforms

Services:

  • AI software development
  • AI and intelligent automation
  • Fintech software development
  • Custom software development
  • Banking software development
  • Loan origination software
  • Credit decisioning systems
  • KYC and onboarding automation
  • Workflow automation
  • Decision automation
  • Core banking integration
  • Cloud migration and infrastructure
  • DevOps and platform engineering
  • Digital transformation
  • Financial data and reporting solutions

Contact Information:

  • Website: www.tdot.uk
  • Twitter: x.com/techdotuk
  • LinkedIn: www.linkedin.com/company/techdot
  • Address: 124 City Road, London, EC1V 2NX

Conclusion

There is no single type of AI development company that works for every fintech project. A startup testing an AI-driven financial product has very different needs from a bank trying to introduce automation into an old platform without disrupting existing operations. The same goes for fraud detection, document processing, predictive analytics, lending, payments, and investment software. Each comes with its own mix of data, integrations, security concerns, and regulatory requirements.

So it is worth looking beyond the AI label when comparing companies. The clever model or chatbot is only one piece of the product. It still needs clean data, dependable infrastructure, secure integrations, sensible testing, and software people can actually use every day. In fintech especially, that less exciting groundwork tends to matter just as much as the AI itself.

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