If you’ve ever struggled with software that just doesn’t play nicely with other systems, you know how crucial integration testing is. The right testing partner can catch issues before they turn into headaches, making sure your apps, APIs, and services all work together seamlessly. In the UK, there are some great companies that combine technical know-how with hands-on experience to make integration testing feel less like a chore and more like a smooth, manageable process. Here are some of the ones worth checking out.
1. A-Listware
We work closely with UK companies to provide software development and integration testing support, ensuring that different systems and applications work together smoothly. Our focus is on managing both local and remote teams so that integration testing fits naturally into project timelines. We prioritize clear communication and structured workflows to make sure our testing process runs efficiently and aligns with our clients’ needs.
We also handle infrastructure and application management, covering both cloud-based and on-premises systems. By assigning local supervisors to guide our outsourced teams, we maintain consistency and keep everyone on the same page. This approach allows us to support UK businesses in tackling integration challenges while keeping testing processes coordinated and reliable.
נקודות עיקריות:
- Dedicated teams for software development and testing
- Management of cloud-based and on-premises systems
- Local supervisors for outsourced teams
- Structured workflows for integration testing
שירותים:
- בדיקות אינטגרציה
- מיקור חוץ של פיתוח תוכנה
- הגדלת צוות
- שירותי אבטחת איכות ובדיקות
- ייעוץ IT
- ניהול תשתיות
- Cybersecurity and support services
פרטי קשר:
- אֲתַר אִינטֶרנֶט: a-listware.com
- אֶלֶקטרוֹנִי: info@a-listware.com
- פייסבוק: www.facebook.com/alistware
- לינקדאין: www.linkedin.com/company/a-listware
- כתובת: סנט ליאונרדס-און-סי, TN37 7TA, בריטניה
- מספר טלפון: 44 (0)142 439 01 40+
2. QATestLab
QATestLab helps ensure complex software systems actually work together. They test individual modules and how they interact, catching conflicts before they reach production. Whether it’s a smaller system that can be tested all at once or a large project requiring incremental integration, they adapt to fit the need.
Their approach supports continuous integration and keeps timelines manageable. It’s a practical, flexible way to make sure everything behaves as expected, with a focus on spotting issues early and keeping systems running smoothly.
נקודות עיקריות:
- Testing of individual modules and their combinations
- Adaptable approaches: Big Bang or incremental integration
- Early detection of integration issues
- Support for both manual testing and automated scripts
שירותים:
- בדיקות אינטגרציה
- Manual and automated testing
- Top down and bottom up testing
- Support for continuous integration projects
- Verification of system modules and workflows
פרטי קשר:
- Website: qatestlab.com
- דואר אלקטרוני: contact@qa-testlab.com
- פייסבוק: www.facebook.com/qatestlab
- טוויטר: x.com/QATestLab
- לינקדאין: www.linkedin.com/company/qatestlab
- כתובת: רחוב פלירו 34, קומה 1, משרד 115 2066 סטרובולוס, ניקוסיה, קפריסין
- טלפון: 357 22 27-04-66+
3. TestFort
TestFort mixes manual and automated testing to make sure all parts of a system work together as they should. They examine modules both individually and in combination, catching problems before they grow. Every testing plan is tailored to the project’s size and pace, which keeps things efficient.
They also bring AI-powered tools into the mix to complement traditional QA, helping maintain consistent performance across platforms. With experience across many industries, they’re flexible and ready to support continuous integration setups.
נקודות עיקריות:
- Combination of manual and automated integration testing
- Tailored test plans for different project complexities
- Early bug detection to prevent downstream issues
- Use of AI-enhanced testing tools for efficiency and accuracy
שירותים:
- Full-cycle software testing
- בדיקה ידנית
- Automated testing
- QA outsourcing
- Dedicated QA teams
- Consulting on software testing processes
פרטי קשר:
- אתר אינטרנט: testfort.com
- דוא"ל: contacts@testfort.com
- טוויטר: x.com/Testfort_inc
- לינקדאין: www.linkedin.com/company/testfortqa
- אינסטגרם: www.instagram.com/testfort_ua
- Address: 30 N Gould St, Ste R, Sheridan, WY 82801
- טלפון: 1 310 388 9334+
4. M4 Testing
M4 Testing takes a hands-on, practical approach. They start by understanding the software architecture, defining integration needs, and creating detailed test plans. Then they run tests and work closely with development teams to resolve issues as they come up.
Their goal is to make sure the software runs reliably once everything is integrated. Detailed reporting helps track issues and confirm that fixes work, keeping the system consistent and supporting collaboration between testers and developers.
נקודות עיקריות:
- Structured integration testing process from analysis to closure
- Close collaboration with development teams
- Detailed reporting on integration quality
- Focus on reliability and software performance
שירותים:
- בדיקות אינטגרציה
- בדיקה ידנית
- בדיקות פונקציונליות
- Test automation
- UI and UX testing
- בדיקות ביצועים ואבטחה
- בדיקות נגישות
- Test consulting and outsourcing
פרטי קשר:
- Website: m4testing.co.uk
- E-mail: info@m4testing.co.uk
- Facebook: www.facebook.com/people/M4-testing_ltd/100095175191596
- Twitter: x.com/m4testing_ltd
- Instagram: www.instagram.com/m4testing_ltd
- Address: 320 Firecrest Court Centre Park, Warrington, Cheshire, United Kingdom, WA1 1RG
- Phone: 0203 289 2896
5. CelticQA
CelticQA focuses on how software components and systems talk to each other. They test module interactions, APIs, authentication flows, and data transfer between systems. Depending on the project, they use approaches like top-down, bottom-up, hybrid, or Big Bang testing.
The team works closely with development and DevOps groups to resolve issues quickly. Detailed reporting ensures that fixes work, post-release issues are minimized, and workflows stay consistent, leading to more reliable software delivery.
נקודות עיקריות:
- Multiple integration testing approaches tailored to system architecture
- Verification of module interactions, APIs, and authentication flows
- Close collaboration with development and DevOps teams
- Focus on reducing post-release issues and improving workflow
שירותים:
- בדיקות אינטגרציה
- בדיקה ידנית
- בדיקות פונקציונליות
- Test automation
- בדיקות רגרסיה
- בדיקות ביצועים ואבטחה
- Data migration and API testing
- E-commerce and POS testing
פרטי קשר:
- Website: celticqa.com
- E-mail: info@CelticQA.com
- LinkedIn: www.linkedin.com/company/celticqasolutionsus
- Address: Dundalk, Ireland Regional Development Centre DkIT Dublin Rd Dundalk Co Louth
6. a1qa
a1qa focuses on making sure that software components work smoothly together across web, mobile, and desktop applications. Their integration testing process covers functional and data integration, checking that all modules communicate correctly and that workflows are consistent. They apply methods like big bang, top-down, bottom-up, and hybrid testing depending on the project’s size and complexity. The goal is to confirm that software behaves as intended when all pieces are combined and that new changes don’t disrupt existing functionality.
The team also emphasizes automation to speed up testing and reduce errors, using frameworks and tools like Selenium, Appium, and Robot Framework. By combining automated tests with a clear integration strategy, they help maintain reliable system performance and provide detailed reporting for any issues found. This approach supports smoother deployments and makes it easier for development teams to address integration challenges efficiently.
נקודות עיקריות:
- Multiple integration testing approaches for different system architectures
- Functional and data integration testing
- Automated regression testing to catch potential issues
- Focus on uninterrupted system performance and reliable data flow
שירותים:
- System integration testing
- Functional integration testing
- Data integration testing
- Automated regression testing
- Mobile, web, and desktop testing
- API testing
- Test automation and continuous integration
פרטי קשר:
- אתר אינטרנט: www.a1qa.com
- פייסבוק: www.facebook.com/a1qa.software.testing
- טוויטר: x.com/a1qa_testing
- לינקדאין: www.linkedin.com/company/a1qa
- Address: 3d Floor, 5-8 Dysart Street, Moorgate House, London, EC2A 2BX
- Phone: +44 204 525 7620
7. Concetto Labs
At Concetto Labs, the main goal is simple: make sure all the different parts of your software actually work together. Whether it’s web, mobile, or desktop, they dive into how data and functionality move between modules, spotting interface mismatches, API hiccups, or any other communication breakdowns. They mix manual and automated testing, so updates don’t break existing features and everything behaves as expected.
Their QA process is structured but flexible. They start with analyzing requirements, plan tests, create cases, execute them, and track defects. Plus, they keep an eye on emerging trends like AI-powered testing, shift-left approaches, and codeless automation to make testing faster and smarter. The goal? Keep software stable, usable, and performing well, release after release.
נקודות עיקריות:
- Early detection of integration issues to reduce rework
- Structured QA process from planning to execution
- Mix of manual and automated testing for flexible coverage
- Focus on maintaining software stability and performance
שירותים:
- בדיקות אינטגרציה
- Unit and system testing
- בדיקות רגרסיה
- בדיקות ביצועים ואבטחה
- בדיקות שמישות ותאימות
- Test automation with tools like Selenium, Jenkins, Cypress, and Appium
- Continuous testing and quality engineering
פרטי קשר:
- אתר אינטרנט: www.concettolabs.com
- E-mail: info@concettolabs.com
- Address: 6 Hastings Avenue, Ilford, IG6 1DZ, UK
- טלפון: 1 (903) 200 8801+
8. TOTSCo
TOTSCo specializes in integration testing for the telecom world, especially for end-to-end switching in fixed voice and broadband services. Their teams work hand-in-hand with other companies to run connected test scenarios, making sure data flows correctly and everything works together. Planning is key – they coordinate on test plans, data sets, and schedules so nothing falls through the cracks.
The testing environment is available 24/7, although support is provided during UK business hours. Their hands-on, collaborative approach makes it easier to catch issues before they affect the wider system, helping telecom networks stay reliable even when changes are made.
נקודות עיקריות:
- End-to-end testing for switching processes
- Collaboration between multiple companies during tests
- 24/7 access to the testing environment
- Structured approach to test planning and execution
שירותים:
- Integration testing for telecom systems
- Coordination and scheduling of test slots
- Test scenario planning with partner companies
- Connectivity verification between systems
- Technical support during testing hours
פרטי קשר:
- Website: totsco.org.uk
- E-mail: service_desk@TOTSCo.org.uk
- Address: Gresham House 5-7 St Pauls Street Leeds LS1 2JG
- Phone: +44 (0)800 026 0403
9. ZappleTech
ZappleTech is all about making sure software modules play nicely together. They focus on how different parts interact and share data, using automated testing to catch interface issues early. Often, they start testing during development so problems can be fixed before the system is even complete. Depending on the project, they’ll use incremental checks, top-down, bottom-up, or full integration approaches.
Collaboration is central – they work closely with QA, development, and business teams, and provide detailed reports after each test cycle. By embedding testing into Agile or CI/CD workflows, they help teams continuously verify software throughout its lifecycle, simulating real-world conditions to reduce risks before launch.
נקודות עיקריות:
- Automated integration testing for various software modules
- Early testing to identify interface issues
- Support for multiple testing strategies (incremental, top-down, bottom-up)
- Continuous testing in Agile and CI/CD environments
- Detailed reporting and analytics on test outcomes
שירותים:
- One-time integration testing
- Continuous integration testing throughout development cycles
- Automated test script creation and execution
- Test environment setup and simulation
- Collaboration with development and business teams for test planning and analysis
פרטי קשר:
- Website: zapple.tech
- LinkedIn: www.linkedin.com/company/zappletech
- Address: Hollybrook manor, hollybrook park, Clontarf, Dublin 3, Ireland
- Phone: +48-731-76-02-56
10. Testing Frameworks
Testing Frameworks takes a broad approach to integration testing, covering both custom apps and enterprise systems like SAP or Microsoft Dynamics. They focus on making sure different components communicate correctly, running functional checks, data migration testing, and automated test execution. Testing happens alongside development cycles, so issues are caught early and continuous validation is possible.
They also offer enterprise software support and staff augmentation, which makes it easier to scale teams and bring in specialized skills when needed. Their integration testing covers multiple environments and technologies, and they coordinate closely with business and development teams. Regular reporting keeps everyone on the same page and helps track progress.
נקודות עיקריות:
- Integration testing for custom applications and enterprise systems
- Functional and data migration testing
- Automated and manual testing approaches
- Coordination with business and development teams
- Reporting and analytics for ongoing verification
שירותים:
- SAP and Dynamics integration testing
- Automation and manual testing
- Regression and end-to-end testing
- Staff augmentation for QA and development teams
- Test planning, execution, and reporting
פרטי קשר:
- Website: testingframeworks.co.uk
- E-mail: vikas.aggarwal@testingframeworks.co.uk
11. TestWorx LTD
TestWorx focuses on integration testing that ensures all parts of a system work together as intended. They check connections between modules and validate data flows to prevent issues that may not appear during unit testing. Their work spans desktop, mobile, and web applications, helping teams spot potential reliability or performance problems before deployment. TestWorx adapts its testing methods to the complexity and structure of the software, selecting approaches that match timelines and project requirements.
They also provide QA consulting and continuous testing services to support ongoing software development. By integrating testing throughout the development lifecycle, TestWorx helps teams identify issues early and maintain consistent performance across different components. Their approach emphasizes smooth data transfer, functional integrity, and reliable user experience.
נקודות עיקריות:
- Focus on system and component integration
- Testing for desktop, mobile, and web applications
- Identification of reliability and performance issues
- QA consulting and continuous testing support
- Flexible testing approaches based on project needs
שירותים:
- System integration testing
- בדיקות פונקציונליות ורגרסיה
- QA consulting and strategy
- Continuous testing for software updates
- Web and application testing
פרטי קשר:
- Website: testworx.co.uk
- E-mail: info@testworx.co.uk
- LinkedIn: www.linkedin.com/company/testworx-ltd
- Address: Green Park, 200 Brook Dr, Reading RG2 6UB, United Kingdom
- Phone: +44 1189496222
12. מומחי בדיקה
TestingXperts is all about making sure your software actually works together the way it’s supposed to. Whether it’s mobile apps, web platforms, or big enterprise systems, they dive in to spot bugs, check data flows, and make sure updates don’t mess up anything that’s already working. They mix AI-driven automation with hands-on testing expertise, so things get caught early and nothing slips through the cracks.
They also go beyond just basic testing. Think AI-powered quality checks, data validation, and security testing all rolled into one. By combining predictive models with real-time testing insights, they help teams deliver software that’s not just functional, but reliable – and that aligns with business goals. Their testing isn’t a one-off – it’s built into development and operational workflows, keeping systems running smoothly from start to finish.
נקודות עיקריות:
- Integration testing across web, mobile, and enterprise apps
- AI-driven test automation and predictive quality engineering
- Data validation and consistency checks
- Security and vulnerability testing
- Continuous monitoring and testing throughout development
שירותים:
- בדיקות פונקציונליות ורגרסיה
- Integration and system testing
- AI-powered quality engineering
- בדיקות ביצועים ועומס
- Security and accessibility testing
- Mobile and web testing
- Data testing and validation
פרטי קשר:
- אתר אינטרנט: www.testingxperts.com
- דואר אלקטרוני: info@testingxperts.com
- פייסבוק: www.facebook.com/testingxperts
- טוויטר: x.com/TestingXperts
- לינקדאין: www.linkedin.com/company/testingxperts
- Address: 3rd Floor, Belmont, Belmont Road, Uxbridge, UB8 1HE
- Phone: +44 203 743 3008
מַסְקָנָה
Wrapping up, integration testing in the UK has become a key part of ensuring software works smoothly across different systems and platforms. The companies we looked at bring different approaches and strengths, from hands-on system checks to AI-driven automation, but all focus on catching issues before they cause problems for users or teams. It’s a reminder that testing isn’t just a step in the process – it’s a bridge connecting development, operations, and the end-user experience.
Choosing a partner for integration testing often comes down to the kind of software you’re building and how you want to balance speed, reliability, and insight. Whether it’s a complex enterprise system or a mobile application, thorough integration testing helps avoid surprises, smooth out workflows, and give teams confidence in what they release. At the end of the day, it’s about making software that works well, not just looks good on paper.
