IT support and cyber security for businesses and education

Real people who know your organisation.

We look after your IT, security and communications, with a UK-based team and directors who stay involved. Get everyday support, practical advice and help planning what comes next.

Award-winning managed IT support

WINNER · 2026
IT Services Company of the Year
Norfolk Business Awards

WINNER · 2025
IT Services Company of the Year
Cambridgeshire Business Awards

Google
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5.0
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Support 6am to 10pm, seven days a week

UK based team

Enhanced DBS checked engineers

Cyber Essentials certified

IT support for business

Reliable technology, clear costs and practical advice as your business grows. We can manage your IT or work alongside the people who already do.

IT support for education

Support for schools, colleges, trusts and alternative provision, informed by hands on experience of education IT. We understand the demands of teaching, safeguarding and the school calendar.

Industries

Support shaped around the way you work

We support businesses and education providers, from small teams to organisations working across several sites. We take time to understand your systems, working hours and priorities before recommending a solution.

Trusted by businesses, schools and colleges

ExcellentGoogle Star 1Google Star 2Google Star 3Google Star 4Google Star 55.04 reviews
5.0Google Star 1Google Star 2Google Star 3Google Star 4Google Star 5
Excellent4 reviews
Posted on Google Google
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School of Coding
6 October 2026
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We’ve been really pleased with the support from CSLN Group. The team are approachable, responsive and explain things clearly. From day-to-day IT support to larger infrastructure projects, they’ve taken the time to understand our needs and keep things running smoothly. Highly recommended.
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Lucinda Knight
8 May 2025
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CSLN Group Ltd recently installed new security cameras and a detection doorbell to my home. They have been extremely friendly and helpful throughout, making sure I was involved with the positioning of the camera locations and demonstrating the mobile phone app to me. I can highly recommend them to anyone who is looking for extra home security.
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J Knight Design Ltd
29 April 2025
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We have had CSLN as our IT support for over a year now and we couldn’t be happier with the professional, quick and responsive service they offer. CSLN provide a collaborative, friendly and professional approach to their work and clients. Their depth of knowledge has enabled them to consistently meet our requirements and keep us up to date with the latest security and software’s. We look forward to continuing this collaborative journey with CSLN as our IT partners. We would highly recommend.
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Claire Cook
9 March 2025
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I had a fantastic experience with CSLN Group Ltd! Their team is professional, responsive, and truly dedicated to delivering high-quality work. They went above and beyond to meet my needs, and their customer service was excellent. Highly recommend them for anyone looking for reliable, top-notch service!
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New Homepage | Csln Group

Over the past three years, CSLN Group has been a key strategic partner in shaping and delivering our IT strategy. Their guidance and technical expertise have supported major projects including cloud transitions, infrastructure upgrades, and improved cybersecurity.

Their collaborative approach and deep understanding of our needs have enabled us to build a more resilient and future-ready IT environment. CSLN’s support has allowed our internal team to focus on service development with confidence in the stability and performance of our core systems.

We highly value our partnership with CSLN Group and would recommend them without hesitation.

Head of Information Technology, Hills Road Sixth Form College
Red Hall Primary School

We have had a very positive experience with CSLN Group at Redhall Primary School. The team has been professional, reliable and supportive throughout, and their commitment to providing a high-quality service has been greatly appreciated.

Communication has been excellent, and the staff have always been approachable and helpful. We would happily recommend CSLN Group to other schools and organisations looking for a dependable and professional service.

Red Hall Primary School

What we do

One team for your IT, security and communications

From helping a colleague sign in to upgrading a whole site, we bring support, technical expertise and project delivery together.

Csln Engineer Display Bracket Installation Close Up

Managed & Co-Managed IT Support

Keep your people working and your IT moving forward

Everyday support, proactive maintenance and practical IT advice. We can become your outsourced IT team or work alongside your existing staff, with remote and onsite support built around your organisation.

Cyber Security

Protect your people, systems and reputation

Strengthen your defences with endpoint protection, threat detection, security reviews and staff guidance. We help identify weaknesses, prioritise improvements and prepare your organisation to respond to cyber threats.

Microsoft 365 & Google Workspace

Give your team the tools to work securely, anywhere

Get more from your email, collaboration and cloud platforms. We manage accounts, permissions and licences, alongside device management through Intune and Jamf, helping staff and learners access what they need securely.

Backup & Disaster Recovery

Keep your data protected and your recovery planned

Protect essential data with managed backups, recovery planning and agreed restore testing. We help you prepare for accidental deletion, system failure and cyber incidents, with recovery arrangements built around your priorities.

Networks & Wi-Fi

Reliable connections, wherever work and learning happen

Reliable wired and wireless networks designed around your buildings, devices and users. We plan, install and support Wi-Fi, switching and structured cabling, from individual premises to organisations spanning several sites.

Phone Systems & Connectivity

Keep every conversation and connection flowing

Phone systems and internet connections built around how your organisation communicates. We provide VoIP, broadband, leased lines and backup connectivity to keep staff connected across sites and when working remotely.

Servers & Cloud

Build the right foundation for your organisation

Support for onsite servers, cloud services and hybrid environments. We help you plan upgrades, manage migrations and choose an approach that suits your needs and budget.

CCTV Systems

Help protect your people, premises and assets

CCTV designed around your buildings, grounds and security priorities. We plan, install and support camera systems with appropriate coverage, recording and secure access for authorised users.

How we work

The right support, with people who take responsibility

Every organisation needs a different level of help. We agree what is included, who is responsible and how support will work, with directors involved in the relationship and the decisions that matter.

Your outsourced IT team

Ongoing support, maintenance and planning for organisations that want us to take care of their IT.

Extra capacity for your existing team

Specialist knowledge, additional engineering time and cover to help your own IT staff manage demand and move improvements forward.

Expertise for a particular project

Infrastructure upgrades, migrations, deployments and other projects, with scope, costs and delivery agreed before work begins.

Clear expectations from the start

  • Support hours and response targets set out in your agreement, with optional 24/7 cover available
  • Monitoring and maintenance to help identify issues early
  • Agreed responsibility for updates, security patches and account administration
  • Practical advice on priorities, budgets and future improvements
  • A clear monthly price for included services, with additional work agreed in advance

Built on experience in education

Laptop On School Desk
  • Enhanced DBS checked
  • KCSIE aware
  • Filtering and monitoring
  • Planned around term dates

IT support that understands the school day

Education IT has to support teaching, administration and safeguarding within real budget and staffing constraints. Our team brings hands-on experience of working in education, alongside Enhanced DBS checks and awareness of Keeping Children Safe in Education guidance.

We help schools, colleges and trusts with Microsoft 365 and Google Workspace, device management, filtering and monitoring, cybersecurity and reliable infrastructure. We plan work around lessons, exams and term dates, and can support an internal team or manage IT on your behalf.

Getting Started

A clear next step, wherever you are now

01

Tell us what you need

Start with a short call about your organisation, your current IT and what you would like to improve.

02

Receive your IT health report

We offer a free initial IT health check to assess your current IT infrastructure. We then create a summary of the areas reviewed, using red, amber and green priorities to explain what needs attention.

RED

AMBER

GREEN

03

Agree a plan

We set out the recommended work, support arrangements and costs so you can decide how to proceed. There is no obligation to take up our recommendations.

Already have an IT provider?

We coordinate the handover with you and your existing provider, review the systems and access we will need, and agree a timetable around your organisation. Your team will know who to contact and what is changing before the new support starts.

Credentials and partnerships

Technical expertise behind the personal service

Cyber Essentials Logo

Cyber Essentials certified

CSLN holds Cyber Essentials certification, demonstrating that we have met the scheme’s requirements for essential technical controls against common cyber threats.

Technology partnerships

We work with established technology providers including Microsoft, Smoothwall, Ubiquiti and 3CX to deliver and support the systems our clients rely on.

Let’s make IT one less thing to worry about

Tell us what is working, what is causing problems and where you want to go next. We’ll help you decide what to do first.

Based in King’s Lynn. Supporting organisations across the UK.

15 Riverside Business Centre, Crossbank Road, King’s Lynn PE30 2HD

Supporting organisations across East Anglia, London, the Midlands and nationwide. see the AREAS WE COVER