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IT Security Audit · London

Comprehensive IT Security Audits for London SMEs

Proven. Reliable. Fast.

Real numbers that show why London SMEs trust Sereno IT to find the gaps in their security, and close them.

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  • 99 %

    Customer Satisfaction: our partners stay happy because we fix problems before they happen.

  • 82 %

    Same-Day Resolutions: most service requests solved within hours, not days.

  • 98.5 %

    Compliance Score: always audit-ready and aligned with Cyber Essentials and GDPR.

Built on the same tools we use to secure 70+ London businesses

  • Gold Microsoft Partner
  • Google Workspace Partner
  • Cyber Essentials Plus
  • SentinelOne
  • Jamf
  • Ninja RMM
  • Dell Technologies Authorized Partner
  • SonicWall
  • Bitdefender
  • KnowBe4
  • DNSFilter
  • Keeper
  • Datto
  • Veeam Cloud & Service Provider Registered
  • RoboShadow
  • Augmentt
  • Cyber Essentials
  • CloudTango

The Sereno Solution

A security audit that goes beyond a checklist

Our audits are designed for real-world business environments, not just technical tests. We assess your infrastructure, cloud and endpoints, evaluate policies, and deliver a clear roadmap to reduce risk and align with best practices.

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Our Security Audit Includes

  • Full IT risk and vulnerability assessment
  • Network and cloud security testing
  • Microsoft 365 and user access review
  • Backup and recovery verification
  • GDPR and Cyber Essentials alignment
  • Executive summary with practical recommendations

Why Sereno

Your long-term partner in security and compliance

We don't stop at identifying risks, we help you remediate and maintain long-term protection. As a certified Microsoft Partner, our security audits are built on the same principles we use to secure over 70 London businesses every day.

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Not sure where your security stands? Let's find out together..

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Managed Security, Not Just an Audit

From assessment to continuous protection

Security is never "one and done." After your audit, we can help you implement every recommendation and manage your cybersecurity on an ongoing basis, keeping systems monitored, compliant, and safe.

Our Managed IT Security Services Cover

  • Endpoint detection & response (EDR)

  • Managed firewalls & threat monitoring

  • Security awareness training

  • Device encryption & patch management

  • Policy, process, and compliance management

  • Regular risk reviews and reporting

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Trusted by 70+ London SMEs

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Our Happy Clients

Google Reviews
Sereno IT Support

70 Google reviews

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  • Dominik

    11 months ago

    We have partnered with Sereno on a range of IT projects and appointed them as our managed IT services provider and the experience has been exceptional from the…

  • Jo Joynes

    a year ago

    Sereno IT are innovative in their approach to IT support. We moved to Sereno IT in Jan 2023 and have not looked back.

  • AJ Shazad

    a year ago

    I have known Sereno (and their previous business) since 2016 as they are the IT solutions providers of our private credit fund with complex operations.

  • Tim Field

    a year ago

    Great company, very efficient with some wonderful individuals supporting

  • Scott Simmons

    a year ago

    We have used Sereno for our IT support since May 2023 and find the team to be quick, informative and clear in terms of describing any work carried out to…

  • Adam Wright

    a year ago

    We've been working with Sereno for 18 months now and have been impressed by their solution oriented approach.

  • MB

    a year ago

    Great service, rapid response time, friendly, professional technicians - couldn't be better. Very glad we switched providers.

  • Daljit Sumal

    a year ago

    Amazing service as always. Had a few queries which were dealt with swiftly and calmly.

  • Kevin Williams

    a year ago

    Sereno have always responded quickly to our requests/issues. Very polite and professional staff who keep you informed of progress of any problem solutions…

  • Richard Martin

    a year ago

    My company moved to Sereno IT over the new year and we have found the process not only to be painless but i would describe it as enjoyable.

  • Annabelle Pugh

    2 years ago

    We have been clients of Sereno IT's since summer 2023 and we have been extremely happy with the service we have received to date.

  • Dana Ozola

    2 years ago

    These guys are new in the market, but they provide outstanding service. What is important to our company, that they comprehend hierarchy of team and therefore…

  • John Holmes

    2 years ago

    We have been a customer of Sereno since Summer 2023 and the experience since has been overwhelmingly positive.

  • Alexander Moss

    2 years ago

    Great company, full of energy and very attentive to our needs. You really get a personalised service, with the technical ability of a much larger company.

  • James Goodwin

    2 years ago

    My business has recently adopted Sereno IT Support as our ITSM partner over the last quarter.

  • Madeleine Barley

    2 years ago

    Excellent, speedy, friendly and very 'human' service. Intuitive and easy to use platform.

  • Chris Needham

    3 years ago

    I've had the pleasure of working with Sereno for several months now, they are honestly absolutely fantastic.

  • shima

    8 months ago

    Sereno is the most reliable IT support team

CloudTango Reviews

  • “Sereno have been a reliable and valued partner, with a fantastic team of highly responsive and capable technicians, backed by proactive and forward-thinking leadership.”

    John Holmes

    IT Manager, Oikos Storage Ltd

    CloudTango Review

  • “After a couple of challenging years with our previous IT support company, moving to Sereno IT in 2024 has been one of the best business decisions we've made.”

    Joanna Socko

    Franklyn James

    CloudTango Review

  • “IT is no longer a burden or even a part of my work week. I know the team are looked after quickly if they have an issue, and I get all the advice and guidance…”

    Jamie Waldegrave

    COO/CFO, Urban Logistics

    CloudTango Review

  • “The advice we've had from Sereno means we can make informed decisions about what our company actually needs and we know we can implement changes easily.”

    Alice Lees

    Hutton Consulting

    CloudTango Review

  • “Sereno IT provided a solution that perfectly aligned with our needs. Not only did they help us save on costs, but they also ensured our systems are secure and…”

    Nigel Shearsby

    Statons Estate Agents

    CloudTango Review

  • “We've been working with Sereno IT for a year now and continue to be impressed by their forward-thinking approach.”

    Katie Sexton

    Archio Ltd

    CloudTango Review

  • “Sereno are an innovative IT company who make solving your IT issues quick and simple with their vast knowledge.”

    Jo Nauman

    AKT Productions Limited

    CloudTango Review

  • “We have been working with Sereno for around a year and half now, and the support they've provided has been truly invaluable to our business.”

    Fay Allen

    Greencore Homes Ltd

    CloudTango Review

  • “We've been working with SERENO IT and are very happy with their service. Communication is always smooth and efficient, and their team is extremely helpful and…”

    Aziz Selcuk Tuncer

    Ant Yapi UK Ltd

    CloudTango Review

  • “Reliable, Responsive, and Proactive — A True IT Partner. We switched to Sereno after experiencing repeated delays and poor communication from our previous IT…”

    Nisha Patel

    Strata Property Group Ltd

    CloudTango Review

  • “We have worked with Sereno for a couple of years and have been really pleased with them, they are much better than our previous IT support.”

    Justin Elvey

    Director, Big Potato Limited

    CloudTango Review

  • 5-star rated on Google and CloudTango

  • 75+

    Companies and 2,300+ people supported

  • 98%

    Client retention since inception, with zero quality-related churn

  • 100%

    Staff retention last year, so you work with the same accountable team

  • Growing

    We helped our clients grow 14% on average last year

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What's Next For You?

Guides on identifying security gaps and protecting your business.

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Let's talk

Any questions?

Question not answered yet? Whether it's about our pricing, services or processes, we're here to help. Just drop us a line below, or book your 1-1 discovery call to connect at a time that suits you.

What we'll cover on the call

  • Where your current security stands, the gaps worth closing first, and a clear, practical roadmap with recommendations you can act on
  • What a Sereno audit covers, infrastructure, cloud, endpoints and access
  • Your GDPR and Cyber Essentials alignment, and what audit-ready looks like
  • Moving from a one-off audit to ongoing managed protection

We'll get back to you within 60 minutes during business hours.

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