Clear Responsibilities from Day One
Everything documented, so nothing gets missed.
- What we support, desktops, infrastructure and systems
- When to escalate issues to your internal IT team
- The level of admin access you're comfortable with
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Co-Managed IT · For In-House Teams
Overstretched IT team? We're the backup you can rely on.
If your in-house team needs extra hands, specialist expertise, or dependable UK-based coverage, Sereno works alongside them, reducing pressure and filling skill gaps, without adding to your payroll.
Agreed clearly from day one, you stay in control.
Is it right for you?
Sereno's structured, flexible co-managed IT services strengthen internal teams and remove the blockers that slow you down. You'll benefit from our co-managed service if you:
Have a small internal IT team that's overstretched and needs reliable, ongoing support to keep pace with demand.
Rely on global or offshore IT support but struggle with slow response times during UK working hours.
Manage a UK office or branch and need a local co-managed IT service provider for hands-on support.
Want your internal IT team focused on strategic projects, not tied up with repetitive support and admin tasks.
Need to increase IT capacity and capability without the time, cost, or complexity of hiring more full-time staff.
Want to retain control of your IT operation, including how services are managed.
What we cover
Sereno's co-managed IT services provide the expertise and resources your existing team may need to handle growing workloads and complex projects, part of our broader managed IT services.
How it helps
Internal IT teams often manage a wide range of responsibilities, from day-to-day support requests to cloud management and IT strategy. For organisations with limited internal IT resources, keeping systems secure, reliable and up to date can become increasingly challenging.
Sereno delivers comprehensive co-managed IT services, providing additional expertise, specialist tools and extra capacity when it's needed most, backed by recognised industry credentials.
Backed by recognised credentials
Microsoft Gold Partner
Certified Microsoft expertise
SME Awards Finalist
Recognised for service quality
Cyber Essentials Plus
Independently assessed security
Give your in-house team the backup it deserves. Talk to us today.
Why Sereno
Your internal IT department deserves a support partner they can count on. At Sereno, we provide UK-based co-managed support that builds trust, strengthens your IT function, and helps your team perform at its best.
We understand your internal team knows your systems and your people better than anyone. As a co-managed service provider, our role is to work alongside them, filling skill gaps, reducing the pressure, and offering additional support exactly where it's needed. Hover a card to see what's included.
Everything documented, so nothing gets missed.
Reliable local support that fits your structure.
We take the routine work off your team’s plate.
We back your team up without disruption or delays.
Extra hands when your team needs them most.
Built around collaboration and long-term relationships.
As a channel-only partner, we unlock more for your team.
Case studies
How we've strengthened in-house teams and IT operations for businesses like yours.
Case study · Hutton Consulting
Modernised cloud and identity setup to support hybrid working, with security and strategy from a partner they could finally trust.
Read the case study
Case study · Statons Estate Agents
Took ownership of devices, onboarding and security so the operations team could focus on customers, not IT.
Read the case study
Case study · Urban Logistics REIT
Built an IT roadmap aligned to growth, with predictable monthly investment, dependable support and clearer reporting.
Read the case studyHow it works
Designed to support your internal team without disrupting existing processes. Hover a step to see what's involved.
Review
We begin by reviewing your current infrastructure and processes.
Align
Together with your team, we define which areas Sereno will support and which remain the responsibility of your internal IT department.
Integrate
Our monitoring and support tools are integrated with your existing systems.
Support
Sereno works alongside your internal team to help manage workloads, resolve technical issues, and assist with infrastructure and projects.
Optimise
Ongoing monitoring, reporting and recommendations keep your IT secure and efficient, and support flexes as your business grows.
Partnered with the best · Certified by Microsoft, Google & Cyber Essentials
Sound familiar?
Many growing businesses reach a point where internal IT needs extra support. Here's where Sereno's co-managed IT service steps in:
You have 1–3 IT staff managing day-to-day operations, but struggle with capacity during holidays, sick leave or busy periods.
Your skilled IT staff are bogged down with repetitive tasks, device builds, user setup, licences, leaving little time for strategic work.
Your business has outgrown a solo IT manager, but you're not ready to build a full IT department.
Your core IT is managed from a global HQ or offshore team, but your UK office needs responsive, on-the-ground support.
Dominik
9 months ago
Jo Joynes
a year ago
AJ Shazad
a year ago
Tim Field
a year ago
Scott Simmons
a year ago
Adam Wright
a year ago
MB
a year ago
Daljit Sumal
a year ago
Kevin Williams
a year ago
Richard Martin
a year ago
Annabelle Pugh
2 years ago
Dana Ozola
2 years ago
John Holmes
2 years ago
Alexander Moss
2 years ago
James Goodwin
2 years ago
Madeleine Barley
2 years ago
Chris Needham
3 years ago
shima
6 months ago
“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
Common queries on the co-managed model, whether it's right for you, and what to expect when partnering with Sereno.
Co-managed support refers to partnering with an experienced IT team that works as an extension of your in-house team without adding to your payroll. The key difference is that co-managed IT is about collaboration, while fully managed support is about replacement.
Unlike fully managed services, where everything is outsourced, our co-managed approach keeps you in control while we provide external expertise to handle the areas you need help with. Whether it's day-to-day support, escalations or project delivery, we integrate seamlessly with your existing IT setup to strengthen your core operations. This gives your team the confidence to take holidays, manage unexpected absences, and maintain service levels without disruption.
You may need co-managed support if your internal staff is under pressure or struggling to keep up. Common signs include an overstretched in-house IT team, an IT manager tied up with daily support tasks, or skill gaps that limit your ability to manage projects and systems effectively. You might be facing frequent delays in IT initiatives, rising cyber security risks, or downtime that's starting to impact productivity.
Not sure where to start? Let's talk. Book a quick IT consultation and find out if co-managed support is the right fit to strengthen your in-house expertise. No sales pitch, just clear, honest advice.
Yes, Sereno's co-managed IT support is specifically designed to reduce the workload on in-house IT teams. We work alongside your in-house specialists to handle routine tasks such as user support, device setup, system monitoring and maintenance. This allows your IT staff to focus on strategic projects, planning and, ultimately, achieving your business goals. If your team is stretched thin or spending too much time on day-to-day support, co-managed support can provide the extra capacity you need without increasing headcount.
In a co-managed IT setup, you can outsource a wide range of tasks to complement your internal team. Common areas include user support, device builds and configuration, onboarding and offboarding, patch management, remote monitoring, licence and permissions management, and day-to-day troubleshooting. At Sereno, we also assist with project delivery, procurement and cyber security tasks. You choose which responsibilities to keep in-house and which to delegate, giving you full flexibility and control.
If you're unsure where to start, feel free to request an audit from us. We'll help you evaluate where your internal specialists are spending the most time and work with you to define clear responsibilities that make the best use of your resources.
Yes, co-managed IT support is often more cost-effective than hiring additional full-time IT staff. With Sereno, you gain access to a team of experienced engineers, advanced support tools, and specialist skills without the overhead costs of recruitment, training, salaries and employee benefits. You only pay for the services you need, which makes it easier to scale support up or down based on demand.
Sereno's co-managed IT support can be implemented quickly, with most setups completed within a few weeks depending on the size and complexity of your IT systems. Our onboarding process is structured and efficient, ensuring a smooth handover and clear alignment with your internal IT team. We focus on quick integration, minimal disruption, and immediate operational support where it's needed most.
Yes, co-managed IT support is secure when implemented correctly, and at Sereno, protecting your company data is a top priority. We work with your internal team to define clear access levels, follow strict security protocols, and ensure compliance with industry standards. You stay in control of what we can access, and all activity is fully documented and auditable. Our approach is built around transparency, accountability and safeguarding your sensitive information.
Accountability in a co-managed IT setup is handled through clear role definitions and structured communication. We work closely with your internal team to document responsibilities, escalation paths and access levels from the outset, so there's no confusion over who handles what. Regular check-ins, shared visibility on support activity, and transparent reporting all help maintain alignment. You stay in control, while our co-managed IT services team remains fully accountable for the areas you've trusted us to manage.
When choosing a co-managed IT support provider, look for a partner that prioritises transparency, flexibility and seamless collaboration with your existing IT team. Key things to consider include clear role definition, UK-based support availability, proven experience working with internal IT teams, access to enterprise-grade tools, and a structured onboarding process. At Sereno, we focus on building long-term partnerships by aligning with your goals, respecting your existing setup, and ensuring reliable service delivery where it's needed most.
Keep reading
Guides and reads on choosing an IT support model and getting more from your team.
Five distinct IT support models exist, from break-fix to fully managed services, and the right choice depends on your business size, IT complexity, and appetite for cost predictability.
Outsourcing IT support is a significant decision, the right partner can transform how your business operates, while the wrong one creates more problems than it solves. Here's what to evaluate before you sign.
Microsoft 365 prices rise from 1 July 2026, but the bigger risk is renewing a setup that is already paying for waste. Here is what to fix before your renewal locks in higher costs for another term.
Strengthen your in-house IT team with a partner you can count on.
Let's talk
Tell us where your team is stretched and we'll show you exactly how co-managed IT support could help, with no sales pitch, just clear, honest advice. Drop us a line or book a 1-1 call.
What we'll cover on the call
We'll get back to you within 60 minutes during business hours.
We'll be in touch within 60 minutes during business hours. If it's urgent, call 0203 089 01 41.
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