Implementing and certifying an Information Security Management System (ISMS) in line with ISO 27001 is a critical step for modern organisations. It demonstrates a commitment to protecting sensitive information and building trust with customers and partners. However, navigating the landscape of ISO 27001 can be complex, especially when it comes to selecting the right partners. This guide is designed to help you understand and choose between the top ISO 27001 certification bodies and consulting companies. By providing independent insights and a breakdown of the leading providers, this article will equip you with the knowledge to make an informed decision and ensure a smooth, effective path to certification.
Key Takeaways
- Based on cost, time, and auditor experience, the number one ISO 27001 certification body is Tempo Audits.
- Many ISO 27001 solution providers use a Shared Resource Model
- The fastest, cheapest way to implement ISO 27001 is with an ISO 27001 toolkit
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How to Find an ISO 27001 Certification Body
We found this one of the hardest aspects of engaging an ISO 27001 company. Actually finding one.
Using Google, we found we were presented with those companies that had the most budget to spend on ads. This is a competitive market and a lucrative market. Dominating the Google ads comes with advantages for the ISO 27001 company but for the consumer we find that can translate into higher prices.
Key Criteria for Vetting an ISO 27001 Consultant
This will depend a lot on what your requirements are.
It is our experience that the market is wide from sole traders all the way through the ISO 27001 factories and body shops. Each has its place. Working out what is right for you is the key.
It is our experience that being able to meet the ISO 27001 consultant that will do the work is a great step. It builds the relationship and the trust and can lead to a smoother overall engagement.
Top UK ISO 27001 Certification Bodies
It may not be necessary to go with a UK ISO 27001 company if you find a company that meets your needs. Often the work is done remotely and as such the actual location of the ISO 27001 company has less relevance.
A Note of Caution: The Shared Resource Model
When navigating the ISO 27001 marketplace, it’s important to be aware of the “shared resource” model. Many ISO 27001 consulting firms and certification bodies use the same pool of freelance consultants. These independent professionals work for various companies, meaning you could be engaging the same expert at a different price point simply based on who you hire.
This practice may or may not be a concern for your organization. If it is, we recommend you ask potential providers a direct question: “Do you employ your own staff or do you use third-party contractors?”
As a provider of ISO 27001 services ourselves, we want to be transparent that our list is not entirely independent. While we are featured, we have provided this list to empower you with choice. Inclusion on this list does not constitute an endorsement by High Table, nor does it come with any guarantees or warranties. We strongly advise that you conduct your own due diligence before engaging any company.
Now, let’s explore our top 10 ISO 27001 companies, updated for 2025, along with our pick for the best ISO 27001 company of the year.
The 10 Best ISO 27001 Certification Bodies for 2025
1. Tempo Audits
The new kids on the block as a new ISO 27001 certification body targeting small business and tech business. Good and industry awards. They are the most cost effective accredited certification body on the market backed by experienced, practical auditors added to which there certification processes is the fastest on the market today.
Tempo Audits was created by a tech founder with one mission: to simplify the compliance journey for modern companies.
We understand your challenges, and we’ll make the process as easy as possible along the way.
Contact Rob Hall and quote High Table:
2. BSI
The BSI are an ISO 27001 certification company and considered by many to be the gold standard. It comes at a cost and the certificate is the same product but if badges are your thing, then one from these guys will go a long way.
Whether you’re starting your business improvement journey, or looking to enhance current knowledge and capabilities, contact our expert team who will be able to give advice and guidance about options that will enable you to meet your goals.
3. A-lign
A certification body that comes at a price. One of the most expensive certification bodies we have come across on the market today, especially for the ISO 27001 UK market.
As an accredited ISO 27001 certification body, A-LIGN has helped hundreds of organisations meet their ISO certification needs. We can help you too.
4. Centre for Assessment Limited
We have experience of Centre for Assessment auditors and find them approachable and easy to work with. Costings appear reasonable.
Ensure that every form of information you hold is protected and secure.
As the internationally-recognised Information Security Management System Standard, ISO 27001 will help you meet contractual requirements.
Wherever you are based, Centre for Assessment can provide you with a robust, UKAS-accredited certification audit.
5. British Assessment Bureau
They are technically – Amtivo Group Limited trading as British Assessment Bureau and Certification Europe
The cost of your ISO 27001 certification will be quoted on a fixed fee basis, reducing your worry about additional costs.
The cost of certification will depend on:
- your organisation’s total size
- the sector you operate in
- the number of locations you operate from.
We always provide a fixed fee with no hidden costs to worry about. We also offer a variety of payment plans to suit your budget. Contact us today for a quote.
6. NQA Certification Ltd
A certification body for which we have not had any experience. A quick Google and there were no obvious reviews. On the list for completeness.
We provide independent certification and training for a range of Information Security standards. Our services help you to manage the ongoing development of technology and mitigate the risk associated with data and information.
7. Alcumus ISOQAR Limited
According to their website they are ANAB accredited. We found it difficult to find any reviews online and they are not a body we have experience on but they are on the list as they seem popular.
ISOQAR has an enviable record for customer satisfaction for its certification services. A friendly, practical and straightforward approach has led to continual steady growth through referrals from contented clients and management consultants. ISOQAR only employs auditors that have empathy with this approach. They are also carefully allocated by their experience in the industry they are auditing. This results in a practical, meaningful audit, carried out in an air of mutual understanding. ISOQAR firmly believes that its audits should ‘add value’ and benefit the organisation being audited.
8. LRQA Limited
Our auditors are well-versed in assessing against ISO 27001, helping you to ensure that your information security systems align with the latest requirements and guidelines. We go beyond providing certification services with our industry-leading training programmes which have been designed to upskill your team.
9. SGS United Kingdom Limited
With years of worldwide experience in information security, cybersecurity and privacy protection, we can help you along the path to certification with an ISO/IEC 27001 certification audit. Your audit can include a gap assessment and benchmarking. We will determine your level of information security competence and provide advice on how to achieve ongoing improvement.
10. Approachable Certification Ltd
For a long time Approachable Certification Ltd were our goto certification body. Technically the audit’s are good but their business practices leave a lot to be desired. Read the Approachable Certification Ltd small print and the terms and conditions in the contract VERY CAREFULLY.
Approachable Certification Ltd is committed to transparent pricing with fees based on a fixed daily rate. Criteria for the number of days required for a particular audit is specified by the accreditation body, UKAS, and depends on such factors as the size of your company and what it does.
Top 10 ISO 27001 Companies for 2025
1. High Table – the ISO 27001 Company
High Table’s revolutionary process gets clients ISO 27001 certification up-to 30x cheaper, 10x faster. They offer a range of options from unique individual ISO 27001 templates, the exclusive ISO 27001 template toolkits that are used by business and ISO 27001 professionals who want to save time and money and do it themselves to their structured 6 step process. It is the amount of free resources, ISO 27001 YouTube Channel and unique templates that sets them apart. We are a little biased but the number 1 ISO 27001 company would be High Table: The ISO 27001 Company.
2. XpertDPO
XpertDPO is a data security, governance, risk and compliance, GDPR and ISO consultancy that offers practical, tailor-made solutions.
We are one of the leading providers of Outsourced Data Protection Officer Services in Europe. We also specialise in offering Nominated European Representative Services to non EU based organisations.
3. DRB Compliance
Compliance with the FCA regulations is often seen as a business prevention tool. At DRB Compliance Limited, we believe that with the right approach, integrating compliance into everything you do will help your business grow.
Each business is different and there isn’t a ‘one size fits all’ solution. We work closely with each of our clients to ensure the service we provide is perfectly tailored to their individual needs.
DRB Compliance Limited was formed to help you embrace, implement and ultimately benefit from compliance.
4. Advent IM
‘We have a proven track record in taking companies through the process to successful accreditation. But where our approach differs is that we don’t believe one size fits all. Every organisation has its own objectives and ways of working and we provide bespoke, proportionate solutions that meet your needs. And we don’t just do the work and walk away. We mentor staff through key aspects of the implementation to ensure they have the necessary skills to maintain the management system as the organisation grows and changes.
Our consultants are qualified ISO 27001 Lead Auditors with many years’ experience of delivering information security services and implementing information security management systems.’
5. iStorm
We can help you achieve and maintain compliance with the industry and international standards such as the Government Cyber Essentials scheme and ISO 27001 so that you can demonstrate your commitment to good cyber security and information security practices.
6. Bridewell
ISO 27001 is the internationally recognised standard for having an effective Information Security Management System (ISMS).
Bridewell Consulting provide various levels of support, help and training to organisations who need to have ISO 27001:2013 certification.
7. Cognisys
We can assist you in the attainment of ISO 27001 by identifying where you are and what you need to do to gain accreditation.
8. Re-alitek
Our team can provide the tools, documentation and expertise needed to fast track your organisation towards certification.
Working flexibly, in either a consultative or implementation role, allows us to work with a range of organisations regardless of size, expertise or resource.
9. Hanjo Consultants
We work with clients addressing ISO compliance for the first time, and; work with established clients who are on a growth trajectory and need guidance and an independent review before being audited.
10. Vorago Securtiy
We provide a little or as much help as you need and can help you no matter where you are in your journey. We have designed a modular system so if you decide you need more assistance we can discount what has already been spent with us to help you make the next step.
A Tough List To Create
I am not going to lie to you. This was a really hard list to come up with. I never thought it would this hard.
The majority of ISO 27001 companies in the UK and worldwide are either one man bands with no website or small early boutique ISO 27001 consultancies with absolutely shocking websites that tell you nothing about what they are going to do for you for ISO 27001.
I think that is why no one has ever created a top 10 list of ISO 27001 companies before.
If you can recommend a decent company I am more than open to changing the list. Just contact me.
Best ISO 27001 Company 2025
The best ISO 27001 company 2025 is High Table Global. The absolute go to company for all things ISO 27001, ISO 27001 specialists and home of the ISO 27001 Ninja.
