If you’ve ever tried to navigate the maze of data security compliance, you know ISO 27001 isn’t just another checkbox - it’s the gold standard for proving your business takes information security seriously. But with so many certification bodies out there, how do you know which ones actually walk the talk?

In this guide, we’re cutting through the noise and spotlighting the top ISO 27001 certification companies worth your attention in 2025. These are the organizations that combine deep technical expertise, credibility, and a modern approach to helping businesses build real trust through compliance - not just paperwork.

 

1. Oski Solutions

We help companies modernize how they work by designing and building software that fits their needs and scales with their growth. What began as a small, dedicated team has evolved into a full-service development organization working with clients across North America, Europe, and Israel. Our focus has always been on practical, well-engineered solutions that make a measurable difference in how businesses operate. With deep experience in web development, cloud systems, and AI-driven tools, we approach each project with flexibility and technical precision. We are also an ISO 27001 certified company.

We typically work with mid-sized companies and growing startups that rely on technology as a core part of their business. Our team combines technical skill with a straightforward, collaborative workstyle-staying agile, remote-friendly, and transparent throughout every stage of development. From custom applications and integrations to full-scale system overhauls, we aim to simplify complex IT challenges so our clients can focus on scaling their operations and achieving long-term results.

Key Highlights:

• Expertise in web applications, cloud computing, AI, and Microsoft technologies
• Focus on scalable, dependable, and customized solutions
• Supports both established companies and startups

Services:

• Custom software development
• Web and cloud application development
• Team augmentation and outstaffing
• IT outsourcing and full-cycle development

Contact Information:

• Website: oski.site
• E-mail: contact@oski.site
• Linkedin: www.linkedin.com/company/oski-solutions
• Address: Estonia, Tallinn, Kaupmehe tn 7-120, 10114
• Phone: +4 857 128 2759

 

2. Schellman

Schellman operates under two entities, Schellman & Company, LLC and Schellman Compliance, LLC, providing professional services focused on IT compliance and cybersecurity. They structure their services under an alternative practice arrangement, where the CPA firm handles attest services while the compliance arm offers nonattest cybersecurity and compliance services. Their approach separates the two entities legally and operationally, allowing them to provide a range of services without overlap in liability.

Their operations emphasize continuity and adherence to professional standards. Schellman is registered with the Public Company Accounting Oversight Board and maintains compliance with applicable laws and regulations. Their services cater to a variety of organizations seeking structured, regulated assessment of IT compliance and cybersecurity frameworks.

Key Highlights:

• Alternative practice structure separating attest and nonattest services
• Focus on IT compliance and cybersecurity assessments
• Registered CPA firm for attest services
• Services operate under independent ownership

Services:

• IT compliance audits
• Cybersecurity assessments
• FedRAMP assessments
• Attest services

Contact Information:

• Website: www.schellman.com
• E-mail: rfp@schellman.com
• Facebook: www.facebook.com/schellman
• Twitter: x.com/schellman
• LinkedIn: www.linkedin.com/company/schellman
• Instagram: www.instagram.com/schellman
• Phone: 1 866 254 0000
• Address: 4010 W Boy Scout Boulevard Suite 600 Tampa, FL 33607

 

3. World Certification Services (WCS)

World Certification Services Ltd. provides assessment and certification services across multiple management system standards. Established in 1994, WCS aims to deliver impartial, accessible services for businesses of all sizes. They maintain accreditations with UKAS and ANAB and continually review their accreditation scopes to ensure they meet client needs.

WCS handles both accredited and nonaccredited certifications depending on client requirements and scheme feasibility. Their processes are designed to be straightforward, guiding organizations from enquiry to certification with practical support. They serve a broad range of industries and business sectors, relying on experienced auditors to maintain impartiality and consistency throughout their services.

Key Highlights:

• Accredited by UKAS and ANAB
• Offers both accredited and nonaccredited certifications
• Applies impartiality through review and oversight committees
• Services designed for organizations of all sizes

Services:

• ISO/IEC 27001 certification
• ISO 9001, ISO 14001, ISO 45001 certifications
• AS 9100 certification
• Gap analysis, preaudit, and training

Contact Information:

• Website: www.world-cert.co.uk
• E-mail: info@world-cert.co.uk
• Twitter: x.com/wcsltd
• Address: Station Court, 4 Station Cottage, Ormskirk Road, Aintree, Liverpool, L9 5AA
• Phone: +44 (0) 151 924 7474

 

4. Benchmark Certificate

Benchmark Certificate provides testing, inspection, and certification services with a focus on impartiality and compliance. Operating globally in over 40 countries, they work under the principle of impartiality, ensuring that decisions and certifications are free from conflicts of interest. They avoid offering consultancy and certification for the same management system to maintain independence.

They are part of Element, a larger testing, inspection, and certification network, and provide services across multiple regions including Asia, Europe, North America, and Australasia. Their operations cover a wide variety of industries, and they manage thousands of certificates worldwide while maintaining consistency and impartiality in their evaluations.

Key Highlights:

• Global operations in over 40 countries
• Part of Element network of testing, inspection, and certification
• Strict impartiality in certification and consultancy
• Accredited certification services

Services:

• ISO/IEC 27001 certification
• Testing and inspection services
• Management system certification
• Compliance assessments

Contact Information:

• Website: www.benchmarkcertificate.com
• E-mail: info@benchmarkcertificate.com
• Address: 22 Church Street, Rushden, Northamptonshire NN11 6YT, UK
• Phone: +44 1933 418353

 

5. IQCS Certifications Pvt Ltd

IQCS Certifications Pvt Ltd operates as an internationally recognized certification body with experience in providing certification services in India and globally. They focus on helping organizations implement national and international standards, whether as standalone or integrated certifications. Their team consists of experienced professionals who manage the certification process with attention to impartiality and risk-based evaluation.

The organization maintains a structured approach to certification, ensuring objectivity and consistent assessment practices. They also provide support for product certifications, including CE marking, and emphasize aligning operational processes with business goals to support risk management and stakeholder trust.

Key Highlights:

• Accredited by multiple international accreditation boards
• Offers standalone and integrated national and international standards certifications
• Focus on impartiality and risk-based certification
• Provides support for product testing and CE marking

Services:

• ISO/IEC 27001 certification
• Product and process certification
• Risk-based management system audits
• CE marking support and testing coordination

Contact Information:

• Website: iqcsindia.com
• E-mail: iqcs.global@gmail.com
• Facebook: www.facebook.com/iqcs_official
• LinkedIn: www.linkedin.com/company/iqcs-certifications-pvt-ltd
• Instagram: www.instagram.com/iqcs_official
• Address: A - 9, Ground Floor, Akshar Dhara - A, Shanti Park, Upnagar, Nashik - 422006, Maharashtra, INDIA
• Phone: 0253 - 2410430

 

6. BM TRADA

BM TRADA is a global testing, inspection, and certification company with a long history dating back to 1934. They operate across multiple industries, focusing on ensuring that materials, products, and processes are compliant, safe, and fit for purpose. Over the years, the company has merged various testing and certification services into a unified structure and is now part of Element Materials Technology.

Their services are designed to support organizations in product development, compliance, and quality assurance. They provide a range of testing and certification options for sectors where reliability and safety are critical, helping clients navigate regulatory requirements and manage risks effectively.

Key Highlights:

• Part of Element Materials Technology
• Global operations across multiple industries
• Focus on safety, compliance, and fit-for-purpose evaluation

Services:

• ISO/IEC 27001 certification
• Product qualification testing
• Materials testing and inspection
• Management system certification

Contact Information:

• Website: www.bmtrada.com
• Twitter: x.com/BM_TRADA
• LinkedIn: www.linkedin.com/company/bm-trada-certification-services-and-timber-inspections
• Address: Chiltern House Stocking Lane Hughenden Valley High Wycombe HP14 4ND United Kingdom
• Phone: + 44 (0) 1494 569 745

 

7. ACS Registrars

ACS Registrars provides ISO certification services under the UKAS and JAS-ANZ networks. Their approach emphasizes professional principles, transparency, and measurable results. They focus on helping organizations implement management systems efficiently while enhancing performance and reducing risk. They emphasize systematic solutions to support sustainable growth and the internal capabilities of their clients.

Key Highlights:

• ISO certification under UKAS and JAS-ANZ
• Focus on measurable results and risk reduction
• Supports long-term organizational growth and system development

Services:

• ISO/IEC 27001 certification
• Management system assessments
• Risk and performance evaluations
• Sustainable growth and internal process support

Contact Information:

• Website: www.acsregistrars.co.th
• E-mail: dr.yongyuth@acsregistrars.co.th
• Address: Phatthanakan 58, Suan Luang Subdistrict, Suan Luang District, Bangkok, 10250 Thailand
• Phone: 02 322-2272

 

8. Sancert

Sancert provides ISO certification services designed to help organizations strengthen their management systems and improve operational efficiency. They take a structured, practical approach to certification, guiding clients through every step - from initial consultation to post-certification support. Their team of auditors focuses on clear communication and thorough assessment, helping companies align with international standards while identifying opportunities for ongoing improvement.

With accreditation from UKAS and SANAS, Sancert works with businesses across different industries and regions. Their process is built around transparency and collaboration, making certification more accessible and manageable for organizations of all sizes. By focusing on consistent quality and reliable compliance, they aim to support clients in achieving recognition that reflects their commitment to solid management practices and continuous growth.

Key Highlights:

• Internationally accredited by UKAS and SANAS
• Step-by-step guidance from consultation to certification
• Focus on long-term compliance and continuous improvement
• Works with organizations across various industries and regions

Services:

• ISO 27001 (Information Security Management)
• Certification audits and ongoing compliance support
• Pre-certification consultation and preparation guidance

Contact Information:

• Website: sancert.global
• E-mail: info@sancert.global
• Instagram: www.instagram.com/sancert_global
• LinkedIn: www.linkedin.com/company/sancertglobal
• Phone: +27 21 035 1438

 

9. Amtivo

Amtivo, operating under the British Assessment Bureau, is a UKAS-accredited certification body providing ISO certification services recognized internationally. They focus on supporting organizations throughout the certification process, with auditors offering guidance at each step. Their operations include flexible payment options and structured support to accommodate organizational needs.

Their services emphasize maintaining compliance and assurance through government-recognized accreditation. They work closely with clients to ensure certification processes are manageable, accessible, and aligned with both regulatory expectations and operational capabilities.

Key Highlights:

• UKAS-accredited certification body
• Government-endorsed ISO certification with Crown & Tick mark
• Flexible payment and service options

Services:

• ISO/IEC 27001 certification
• Management system assessments
• Process audits and compliance checks
• Certification guidance and support

Contact Information:

• Website: amtivo.com
• E-mail: info.uk@amtivo.com
• Facebook: www.facebook.com/BritishAssessmentBureau
• LinkedIn: www.linkedin.com/company/britishassessmentbureau
• Address: 30 Tower View, Kings Hill, West Malling, Kent, ME19 4UY
• Phone: 0800 404 7007

 

10. NQA

NQA is part of Kiwa, a global organization providing testing, inspection, and certification services. They offer accredited certification and training across multiple management systems, including quality, environment, energy, health and safety, and information security. NQA works with clients of all sizes and often partners with consultants to implement and maintain management systems.

Their approach emphasizes continual improvement and operational performance. By combining global expertise with practical, client-focused support, they help organizations develop and maintain compliant, safe, and efficient management systems. Their work extends across sectors including automotive, aerospace, and manufacturing.

Key Highlights:

• Part of Kiwa global assurance, testing, and certification network
• Provides accredited certification across multiple management systems
• Supports continual improvement and operational performance
• Works with consultants to implement and maintain systems

Services:

• ISO/IEC 27001 certification
• Quality, environmental, and energy management certification
• Health and safety management system certification
• Training and support services

Contact Information:

• Website: www.nqa.com
• E-mail: sales@nqa.com
• LinkedIn: www.linkedin.com/company/nqa-global
• Address: Warwick House Houghton Hall Park Dunstable Bedfordshire LU5 5ZX
• Phone: +44 8000 522 424

 

11. ValidX & ICDQ Partners

ValidX & ICDQ Partners provides inspection, certification, and technical advisory services across multiple industries. They focus on helping organizations meet compliance and operational standards while supporting strategic initiatives like digital transformation and risk management. Their work emphasizes thorough assessment and structured guidance tailored to each client’s operational needs.

They approach certification and advisory with an emphasis on integrity, collaboration, and practical solutions. Their services cover areas such as cybersecurity, operational performance, and ESG reporting, ensuring that organizations can maintain compliance while adapting to evolving industry requirements.

Key Highlights:

• Offers inspection, certification, and technical advisory services
• Focus on operational performance and compliance
• Supports digital transformation and risk management
• Emphasis on integrity and collaborative approach

Services:

• ISO/IEC 27001 certification
• Technical advisory and compliance support
• Risk management assessment
• ESG reporting and operational evaluation

Contact Information:

• Website: www.validx.it
• E-mail: info@validx.it
• LinkedIn: www.linkedin.com/company/validxgr
• Address: Vimodrone, Via dell’Artigianato 18, Milano, Lombardia
• Phone: +39 3891570871

 

12. AENOR

AENOR provides global conformity assessment services, including certification, inspection, testing, training, and information services. They support organizations in managing quality, cybersecurity, artificial intelligence, and ESG-related issues such as corporate governance, equality, and sustainable construction. Their work is aimed at building confidence and trust between organizations and their stakeholders.

Their services combine technical expertise with practical guidance to ensure compliance across multiple standards and industries. AENOR also offers training and information services to help organizations implement and maintain effective management systems and meet evolving regulatory requirements.

Key Highlights:

• Offers certification, inspection, testing, and training services
• Supports quality management, AI, cybersecurity, and ESG initiatives
• Builds trust between organizations and stakeholders
• Provides practical guidance for regulatory compliance

Services:

• ISO/IEC 27001 certification
• Conformity assessment and inspection
• Training and information services
• ESG and governance support

Contact Information:

• Website: www.en.aenor.com
• E-mail: info@aenor.com
• Facebook: www.facebook.com/AENORConfia
• Twitter: x.com/AENOR
• LinkedIn: www.linkedin.com/company/aenor
• Instagram: www.instagram.com/aenorconfia
• Address: C/ Génova, 6. 28004 Madrid
• Phone: 91 432 60 00

 

13. SGS

SGS operates a global network of laboratories and business facilities, providing testing, inspection, and certification services across a wide range of industries. They focus on quality, compliance, and sustainability while delivering structured support for operational processes and regulatory requirements. Their expertise extends across both product and management system certifications.

Their services emphasize precision and reliability, backed by over a century of experience. SGS also integrates specialized brands and services to support industry-specific needs, offering practical solutions that help organizations maintain compliance and improve performance on a global scale.

Key Highlights:

• Global network of laboratories and business facilities
• Provides testing, inspection, and certification services
• Supports quality, compliance, and sustainability initiatives

Services:

• ISO/IEC 27001 certification
• Testing and inspection services
• Product and management system certification
• Specialized industry support services

Contact Information:

• Website: www.sgs.com
• Facebook: www.facebook.com/sgs
• Twitter: x.com/SGS_SA
• LinkedIn: www.linkedin.com/company/sgs
• Instagram: www.instagram.com/sgsglobal
• Address: Heidenkampsweg 99, 20097, Hamburg, Germany
• Phone: +49 40 30101 0

 

14. BSI Group

BSI Group provides a range of services including certification, training, standards development, and assessment across multiple industries. Their approach emphasizes helping organizations improve performance, meet industry standards, and address operational challenges. They work with businesses, governments, and NGOs to provide guidance and frameworks that support compliance, safety, and operational effectiveness.

Their operations are structured around impartiality and collaboration, reinvesting profits to advance their mission rather than serving shareholders. This allows them to maintain a focus on long-term impact, working closely with partners to support sustainable practices and continuous improvement across organizations of all sizes.

Key Highlights:

• Offers certification, training, and standards development services
• Works across multiple industries and sectors
• Emphasizes impartiality and collaboration
• Reinforces sustainable practices and continuous improvement

Services:

• ISO/IEC 27001 certification
• Management system assessments
• Training and capacity building
• Standards development and advisory

Contact Information:

• Website: www.bsigroup.com
• E-mail: cservices@bsigroup.com
• Facebook: www.facebook.com/BritishStandardsInstitution
• Twitter: x.com/BSI_UK
• LinkedIn: www.linkedin.com/company/bsi
• Address: Seventh and Eighth Floors, The Acre, 90 Long Acre, London, WC2E 9RA
• Phone: 0345 086 9001

 

15. A-LIGN

A-LIGN operates as a multi-service compliance provider, offering ISO certification, SOC audits, HITRUST assessments, and FedRAMP services. They provide a single-provider approach, combining auditing, certification, and advisory under one framework. Their services are used by organizations ranging from small businesses to global enterprises, with a focus on practical support throughout the compliance process.

They also provide a proprietary compliance management platform, A-SCEND, to streamline assessment and certification activities. Their model emphasizes integration, helping clients manage multiple compliance requirements efficiently while maintaining structured and consistent processes across standards.

Key Highlights:

• Provides ISO certification, SOC audits, and HITRUST/FedRAMP assessments
• Single-provider approach combining certification and advisory
• Serves small to large organizations
• Offers a proprietary compliance management platform

Services:

• ISO/IEC 27001, ISO 27701, ISO 22301 certification
• SOC 1 and SOC 2 audits
• HITRUST CSF assessment
• FedRAMP 3PAO and CMMC C3PAO
• PCI Qualified Security Assessor services

Contact Information:

• Website: www.a-lign.com
• E-mail: info@a-lign.com
• Facebook: www.facebook.com/aligncompliance
• Twitter: x.com/AlignCompliance
• LinkedIn: www.linkedin.com/company/a-lign
• Address: 400 N Ashley Drive, Suite 1325 Tampa, FL 33602
• Phone: +1 888 702 5446

Conclusion

Choosing an ISO 27001 certification partner is more than just ticking a box-it’s about finding a company that understands your organization, your data, and the risks you face. Each of the companies we’ve looked at approaches certification a little differently, but they all provide structured support to help organizations implement and maintain effective information security management systems.

At the end of the day, the right partner is one that fits with your operational style, communicates clearly, and helps you navigate the complexities of compliance without adding unnecessary friction. Whether you’re a small startup or a global enterprise, having guidance through ISO 27001 processes can make a significant difference in how secure, resilient, and prepared your organization is for the challenges of today’s digital landscape.