Not all code is made equal, and honestly, not every code review catches the stuff that really matters. Whether you’re growing fast or keeping a mission-critical system running, secure code reviews are your first line of defense against bugs, hacks, and those last-minute shocks nobody wants. The right team isn’t just ticking boxes – they’re the ones who help you actually relax, knowing your software’s solid.
In this guide, we’ve rounded up some of the UK’s best secure code review companies. These folks don’t just skim the surface – they dig in, ask the tough questions, and make sure your code ends up tighter, cleaner, and locked down.
1. A-Listware
We don’t treat secure code reviews like just another box to tick at the end of a project. For us, it’s a key part of building software that actually works – and keeps working. When we dive into your code, we’re looking for those tricky logic errors, risky dependencies, and shaky implementation choices early on, so you can fix them before they become a headache. Our process is a mix of hands-on detective work and smart automated tools. But we don’t just rely on scanners to do all the heavy lifting – we bring real engineering know-how to see how the code actually behaves, not just how it looks on paper.
Since we work with all sorts of setups – whether it’s on-premise systems, cloud apps, embedded devices, or anything else – you can count on us to tailor our approach so it fits your needs. Whether we’re stepping in to support your team or running the whole show ourselves, we keep things clear, open, and genuinely useful. We don’t just point out problems; we explain why they matter and what they could mean for your whole stack. At the end of the day, it’s about making your software rock-solid without slowing you down.
Key Highlights:
- Emphasis on early and integrated secure code reviews
- Security expertise across embedded, enterprise, and cloud applications
- Manual and automated analysis combined for more accurate results
- Practical recommendations based on system context
- Long-standing relationships with enterprise and mid-size partners
Services:
- Secure code review
- Software development and engineering support
- Application security consulting
- Legacy system modernization
- Infrastructure and cloud management
- Full-cycle software development
- Dedicated development teams
- QA and test automation
- Cybersecurity services including threat modeling and risk mitigation
Contact Information:
- Website: a-listware.com
- Email: info@a-listware.com
- Facebook: www.facebook.com/alistware
- LinkedIn: www.linkedin.com/company/a-listware
- Address: St. Leonards-On-Sea, TN37 7TA, UK
- Phone Number: +44 (0)142 439 01 40
2. DataArt
When it comes to secure code reviews, DataArt doesn’t just rely on automated tools – they mix those with some serious hands-on manual digging. They start by really getting to know your system’s architecture and the kinds of threats it might face before diving into the code itself. This way, they catch not just the obvious stuff but also those sneaky, complex vulnerabilities that machines alone might miss. They kick things off with static analysis tools to do a quick scan, but the real magic happens when their experts manually review the code to double-check and spot issues that only context can reveal. Plus, they follow the OWASP guidelines to make sure everything aligns with the best security standards out there.
What’s cool is that DataArt doesn’t treat secure code review like a one-off chore. They can plug into your development cycle for ongoing reviews, so your team stays in the loop on security without it feeling like a disruption. Their work covers everything from threat modeling to tracking data flows and transactions, giving a full picture of how your app behaves under the hood. They’re all about understanding the logic and design choices in your code, not just fixing surface-level stuff like formatting errors. By combining smart tools with real-world insight, they give clear, actionable advice that developers can actually use – no vague warnings or confusing jargon.
Key Highlights:
- Uses both static analysis tools and manual reviews
- Follows OWASP Code Review and Application Security Verification standards
- Tailored code review plans based on system architecture and risk profile
- Identifies deeper flaws in logic and design that automated tools often miss
- Option to embed security experts into development teams for ongoing reviews
Services:
- Secure code review (automated and manual)
- Application threat modeling
- Dynamic and static data flow analysis
- Security control assessment
- Custom software development with security integration
- Legacy system modernization with code security checks
- Security consulting across a range of industries
Contact Information:
- Website: www.dataart.com
- E-mail: hr-uk@dataart.com
- Facebook: www.facebook.com/DataArt.Dev
- Twitter: x.com/DataArt
- LinkedIn: en.linkedin.com/company/dataart
- Address: 55 King William Street, 3rd floor, London, EC4R 9AD
- Phone: +44 (0) 20 7099 9464
3. TopCertifier
TopCertifier knows that secure code review isn’t just a checkbox at the end of the project – it’s something you want to catch early on to avoid nasty surprises down the road. They get that developers often focus on making things work first, and security can slip down the list. So, their approach is all about weaving code reviews right into the development process, not just after the fact. That might mean developers doing self-reviews, using automated tools built into popular IDEs like Eclipse or Visual Studio, or bringing in security analysts for a deeper look. The goal? Spot those weak spots ASAP, so insecure code doesn’t sneak into production and cause headaches later.
But TopCertifier doesn’t stop at just code reviews. They also help businesses with certifications – think training, audits, paperwork, and ongoing support to make sure you’re ticking all the compliance boxes. They work all over the UK, covering major cities and regions, and pride themselves on offering practical advice that fits right into your security and quality workflows.
Key Highlights:
- Integrates secure code review into the development phase
- Supports self-review, automated tools, and analyst reviews
- Focus on early detection to reduce impact of vulnerabilities
- Offers certification services alongside secure code review
- Operates across major UK regions and cities
Services:
- Secure code review within SDLC
- Automated tool integration with IDEs (e.g., Eclipse, MS Visual Studio)
- Security analyst code inspections
- ISO and security certification consulting
- Training and documentation for compliance
- Pre-assessment and final audit support
Contact Information:
- Website: www.iso-certification-uk.com
- E-mail: info@topcertifier.com
- Facebook: www.facebook.com/TopCertifier987
- Twitter: x.com/TOPCertifier
- LinkedIn: www.linkedin.com/company/topcertifier
- Address: Muktha Ltd, 82 Crocus Way, Chelmsford, England, CM1 6XJ
- Phone: +44 7496 840758
4. Brightstrike
Brightstrike gets that secure code review is a big deal – it’s not just a box to tick but a core part of keeping your whole security game strong. They dig deep into your source code, hunting for weak spots that might slip past regular security scans. Their secret sauce? A mix of good old-fashioned manual checking combined with automated tools to catch those tricky coding mistakes and vulnerabilities that hackers love to exploit.
Their team? Seasoned security pros who know the tech inside out but also get the real-world challenges companies face. They don’t just point out what’s wrong – they walk you through how to write safer code and keep your sensitive info locked down. Plus, they offer penetration testing too, which is like giving your whole system a thorough once-over to find holes that a code review might miss. It’s all about covering your bases and avoiding expensive security headaches later on.
Key Highlights:
- Combines manual and automated code review techniques
- Focus on identifying insecure coding practices
- Provides guidance on secure coding for prevention
- Experienced security professionals on staff
- Offers penetration testing as a related service
Services:
- Secure code review for various applications
- Manual code inspection and automated scanning
- Recommendations for improving coding security
- Penetration testing to assess system vulnerabilities
- Security consultation and strategy advice
Contact Information:
- Website: brightstrike.co.uk
- LinkedIn: www.linkedin.com/company/brightstrike
- Address: 14A Clarendon Avenue, Leamington Spa, Warwickshire, CV32 5PZ, UK
5. NCC Group
NCC Group takes secure code review seriously – they’re all about finding vulnerabilities right in your source code throughout the entire development process. They know some risks can slip past other checks, like interactive testing, so they dig deeper, including into recently updated software and even third-party licensed code. Basically, they help you spot where the real trouble might be before it causes headaches down the line. Plus, they keep an eye on all those tricky compliance and regulatory rules, making sure your code ticks the right boxes for industry standards and data privacy.
Their reviews aren’t just about pointing out problems – they go after the tricky, hidden flaws that can mess with your software’s security and stability. And when they find something, they don’t leave you guessing: they give clear risk ratings so you know what needs urgent attention. On top of that, they help train your developers to build stronger security habits, so your team gets better at preventing issues over time. Overall, NCC Group’s goal is to cut down your long-term risk by tackling problems at the source and getting you ready to handle any security issues that come your way.
Key Highlights:
- Detailed source code review covering the full development lifecycle
- Identifies risks that other security tests may miss
- Includes review of third-party and licensed code
- Focus on compliance with data privacy and industry regulations
- Provides risk ratings and actionable recommendations
Services:
- Manual and automated secure code review
- Risk assessment with severity ratings
- Third-party code review and escrow support
- Developer training and upskilling
- Regulatory compliance consultation
Contact Information:
- Website: www.nccgroup.com
- LinkedIn: www.linkedin.com/company/ncc-group
- Address: XYZ Building 2 Hardman Boulevard Spinningfields Manchester M3 3AQ
- Phone: +44 161 209 5200
6. Kentro
Kentro takes secure code review pretty seriously – they mix manual checks with automated tools to dig deep into your source code. They’re all about finding those hidden problems like backdoors, injection flaws, or weak encryption that could leave your apps open to attack. What they really push is catching these issues early on during development, which not only cuts down risks but also helps keep your software running smoothly.
Their approach is pretty straightforward: start with threat assessments, run automated scans, then do manual reviews to double-check everything. After that, they don’t just hand over a report – they give you practical advice on how to fix the issues and make your code more secure and easier to maintain. Plus, Kentro points out that a thorough code review doesn’t just boost security – it can save you money down the line by reducing maintenance headaches and helping your team write better code overall.
Key Highlights:
- Combination of manual and automated code review
- Focus on detecting a wide range of vulnerabilities
- Compliance with major IT security testing standards
- Structured review process with threat assessment and reporting
- Applicable to various industries with regulatory needs
Services:
- Secure code review using industry tools
- Threat and risk assessment
- Manual code inspection and validation
- Detailed reporting with proof of concept
- Recommendations for remediation and improvement
Contact Information:
- Website: kentro.uk
- E-mail: hello@kentro.uk
- Address: The Minster Building, Great Tower St, London EC3R 7AG, United Kingdom
7. FirstNet Systems
FirstNet Systems takes secure code review seriously – they’re all about catching security risks, performance glitches, and coding mistakes early on in the development process. Their team digs into your source code with a sharp eye, checking it against important standards like ISO 27001, NIST, and Cyber Essentials. It’s not just about making sure your software works, but making sure it’s safe and compliant with the latest privacy and security rules.
But they don’t stop at code reviews. FirstNet also offers security testing, penetration testing, and quality assurance to give you a fuller picture of your software’s health. Their goal is to help keep your systems secure and running smoothly, while staying up-to-date with all the changing regulations and best practices out there.
Key Highlights:
- Detailed source code examination
- Compliance checks with ISO 27001, NIST, Cyber Essentials
- Early identification of vulnerabilities and inefficiencies
- Focus on reducing risk and long-term costs
- Integration with broader security testing and QA services
Services:
- Secure code review aligned with industry standards
- Security testing and vulnerability assessments
- Penetration testing using established frameworks
- Functional and quality assurance testing
- Compliance audits for data privacy and security
Contact Information:
- Website: firstnetsystems.co.uk
- E-mail: info@firstnetsystems.co.uk
- Address: 69 Great North Road, New Barnet, London, United Kingdom, EN5 1AY
- Phone: +44 800-689-1012
8. Agile Information Security
Agile Information Security takes a really hands-on approach to secure code review. They don’t just rely on the usual penetration tests – you know, those black box tests that sometimes miss the deeper stuff. Instead, they dig into the actual source code using a mix of automated tools and good old manual inspection. This way, they catch vulnerabilities that others might overlook and give you a much clearer picture of how secure your app really is.
They’re also super careful about keeping your data safe. Everything they review – your source code, sensitive info – is encrypted using top-notch methods and wiped clean once the job’s done. They totally get how important confidentiality is in this kind of work and make sure your info stays protected throughout.
Key Highlights:
- Combines penetration testing with white box code review
- Uses automated and manual techniques for thorough analysis
- Focus on uncovering hidden vulnerabilities beyond surface-level tests
- Maintains strict data protection and confidentiality practices
- Data encrypted and securely wiped after engagement
Services:
- Security code review with manual and automated checks
- White box application testing
- Penetration testing support
- Vulnerability identification across proprietary and commercial apps
- Confidentiality and data handling safeguards
Contact Information:
- Website: www.agileinfosec.co.uk
- E-mail: pedrib@agileinfosec.co.uk
- Phone: +44 745 0181 274
9. Team Secure
Team Secure really knows their stuff when it comes to security code reviews. They use a mix of automated tools and good old manual checks to dig out any weak spots lurking in your app’s source code. What’s cool is that they don’t just find issues – they actually prioritize them based on how likely those problems are to be exploited and how much damage they could do to your business. That way, developers get clear guidance on what to fix first, focusing on things like input validation, safe memory handling, and data encryption.
They’re all about working hand-in-hand with your dev teams to boost your app’s security overall. Plus, they’re super quick at sending consultants wherever they’re needed in the UK, whether that’s remotely or in person. Their folks are on call 24/7, always keeping an eye on new threats so you’re never caught off guard. Beyond code reviews, Team Secure offers a bunch of other cybersecurity services, including staffing and training – basically helping your organization stay secure without losing focus on what you do best.
Key Highlights:
- Combines manual and automated code review methods
- Prioritizes vulnerabilities by attack likelihood and business impact
- Collaborates closely with application developers
- Offers rapid mobilization of consultants UK-wide
- Provides 24/7 availability and ongoing threat analysis
Services:
- Security code review analysis
- Penetration testing
- Cybersecurity consultancy
- Security staffing and recruitment
- Compliance and advisory services
- Training and awareness programs
- Managed security services
Contact Information:
- Website: teamsecure.co.uk
- Facebook: www.facebook.com/teamsecure.io
- Twitter: x.com/teamsecureio
- LinkedIn: www.linkedin.com/company/team-secure
- Instagram: www.instagram.com/teamsecure.io
- Address: Rue Liotard 6 1202 Geneva Switzerland
- Phone: +41 22 539 18 45
10. Cyberintelsys
Cyberintelsys is all about digging deep into your source code to find any security holes and make sure you’re ticking all the right boxes when it comes to regulations like GDPR, PCI DSS, and ISO 27001. They don’t just run automated scans and call it a day – their security experts roll up their sleeves and do manual checks too. That way, they catch not only the usual coding slip-ups but also those tricky business logic issues that automated tools might miss. Plus, they’re big on practical advice, helping your dev teams understand how to fix things properly. Oh, and they work with a bunch of different languages, frameworks, and platforms, so they’ve got you covered no matter what stack you’re on.
They’ve got clients across all sorts of industries in the UK – finance, healthcare, government, education – you name it. Cyberintelsys really gets how important secure coding is, especially when companies are going through digital transformations. They’re all about delivering reports that are ready for audits and blending in best practices like OWASP Top 10 and DevSecOps to keep security solid from start to finish.
Key Highlights:
- Combines automated SAST tools with manual code review
- Focus on business logic vulnerabilities alongside technical flaws
- Covers a wide range of programming languages and frameworks
- Supports compliance with GDPR, PCI DSS, NCSC, ISO 27001, and others
- Provides audit-ready documentation and tailored remediation guidance
Services:
- Source code security audits
- Static Application Security Testing (SAST)
- Manual code inspection
- Compliance and risk reporting
- Secure coding best practice consulting
- DevSecOps and SDLC integration
- Vulnerability identification and remediation guidance
Contact Information:
- Website: cyberintelsys.com
- E-mail: info@cyberintelsys.com
- Facebook: www.facebook.com/cyberintelsys
- LinkedIn: www.in.linkedin.com/company/cyberintelsys
- Address: First Floor, 686, 16th Main, 4th T Block East, Pattabhirama Nagar, Jayanagar, Bengaluru, Karnataka 560061
11. Periculo Limited
Periculo Limited takes a hands-on approach to secure application code reviews by blending manual checks with automated tools. They know that automated scans don’t catch everything, so their security engineers dig into your source code carefully to spot hidden vulnerabilities. After the review, they provide a clear, detailed report that not only highlights the issues but also prioritizes what needs fixing first. Their goal is to help make your apps more secure and reliable with practical, no-nonsense advice.
They’re flexible and tailor their work to fit each client’s specific needs. Support is mostly available during business hours, and you can reach them through email, phone, or web chat. Plus, Periculo is certified with ISO/IEC 27001 and Cyber Essentials Plus, showing they take security seriously. Beyond tech, they’re also involved in social good efforts – like supporting climate change initiatives, Covid-19 recovery, and promoting equal opportunities within their team.
Key Highlights:
- Blends manual and automated code review techniques
- Detailed technical reporting with prioritized remediation
- Security engineers highlight vulnerabilities beyond automated tools
- Certified to ISO/IEC 27001 and Cyber Essentials Plus
- Client-focused planning and tailored solutions
Services:
- Secure application code review
- Vulnerability identification in source code
- Technical reporting and remediation recommendations
- Cyber security consultancy
- Security risk management
- Support via email, phone, and web chat during UK business hours
Contact Information:
- Website: www.periculo.co.uk
- E-mail: info@periculo.co.uk
- LinkedIn: www.linkedin.com/company/periculo-limited
- Address: A2, Avonside, Melksham, Wiltshire, SN128BT
12. Cognisys
Cognisys approaches secure code review as an important part of the software development cycle. They focus on understanding the codebase and planning the review carefully, including setting clear objectives and identifying critical areas that need attention. Their process blends manual inspection with automated tools, paying close attention to both known vulnerabilities and business logic issues that can be easy to overlook. Cognisys also gathers relevant documentation and prepares an environment that closely mirrors production to get the most accurate insights during the review.
One feature that stands out is their SmartView portal, which helps clients keep track of identified issues, assign remediation tasks, and monitor progress. This platform supports ongoing collaboration, helping teams manage vulnerabilities efficiently. Their team leans into a white box testing approach, digging deep into the code to spot security gaps, logic flaws, and compliance concerns, then offering practical advice and code fixes to strengthen the software’s defenses.
Key Highlights:
- Detailed scoping and planning before review
- Combination of manual and automated code analysis
- Focus on core functionality and compliance requirements
- SmartView portal for tracking vulnerabilities and remediation
- White box testing uncovering hidden flaws
Services:
- Source code review
- Vulnerability identification and mitigation
- Compliance-focused assessments (OWASP, PCI DSS)
- Penetration testing integration
- Project tracking and reporting via SmartView portal
Contact Information:
- Website: cognisys.co.uk
- E-mail: info@cognisys.co.uk
- LinkedIn: www.linkedin.com/company/cognisysgroup
- Address: 131 Finsbury Pavement London EC2A 1NT
- Phone: 0113 531 1700
Conclusion
When it comes to keeping your software secure, code review isn’t just some box to tick – it’s about really digging into what’s going on beneath the surface. The companies we’ve talked about all have their own ways of getting into the nitty-gritty of code, catching the kinds of issues that automatic scans often miss. Some mix good old manual know-how with fancy tools, others have handy platforms to help track problems and make sure nothing slips through the cracks. Either way, they’re all about helping developers build safer, tougher software.
In the end, picking the right code review partner is really about finding the right fit – someone whose process clicks with what you need, who talks your language, and who’ll stick with you on the security journey. No code’s perfect, of course, but having the right folks keeping an eye on it means you catch problems early and fix them before they turn into headaches. It’s a smart move to protect your digital stuff and keep things running smoothly, especially when cyber threats just keep getting trickier.
