Managed IT Support Services in London

Whatever your challenges, you can get streamlined and optimised IT that promotes business growth. For nearly 30 years, Intersys’ managed support has delivered just that right across the capital.

What Makes a Good London MSP?

Intersys has an exceptionally high retention rate – 94% compared to an industry average 77%. We also have years of experience working in highly regulated sectors. Read on to find out more…

A Fast Route to
High-Performance IT

Great IT promotes frictionless working and boosts performance. It really can be the edge you need over the competition. But for IT teams grappling with legacy technology, complex and costly cloud services, cyber security and AI integrations, there’s often the realisation that you’re not quite there yet.

Managed IT Support from Intersys helps organisations reap the promised rewards of streamlined, optimised technology – without the complexity or drain on resources. Based in the City of London, and serving all of the capital, we provide on-demand technical support, cyber security monitoring, network management, data backup and more. We’ll tailor our delivery exactly to your needs on a fixed monthly subscription model, with predictable costs bound by service-level agreements.

If you are a London-based highly regulated industry, we understand the pressures you are facing. We have vast experience working in the insurance and reinsurance sectors, financial services, life sciences and more.

Looking for something else? Find out about advanced cyber security services for London.

IT Support Services London: Case Studies in Your Sector

As a London managed IT support company, we serve dozens of clients in the capital in sectors as diverse as life sciences, pharmaceuticals, the media, mining and engineering, education, renewables and financial services.

Here’s some recent projects showing our MSP services in London across a variety of industries and locations.

Digital development and managed service for Borough of Redbridge Multi Academy Trust

IT Support for Mayfair-based mining and exploration firm

Managed services, including Azure Deployment for FinTech business in London Insurance Market

Microsoft 365 migration and full IT support for a construction company in EC4V

Long-term managed service provision for a family of schools in Newham

Digital transformation and consultancy for FinTech firm in the City of London

Inside the M25? Get Tailored Managed Services

Business technology rarely arrives as a neat, integrated system – instead, it's scattered pieces of infrastructure, equipment and platforms fighting to cooperate. We transform this chaos through managed IT services that unify your entire technology ecosystem. We’ll even manage your third-party vendors. Ask us about all or some of the below services and we’ll create a bespoke package for you.

Rapid Response Service Desk

Access unlimited phone and remote assistance from our ITIL-certified, customer service-focused team. We handle tickets at twice the industry standard speed.

Stable Infrastructure and Cloud Services

Your tech foundation remains dependable and budget-friendly – we handle server management and cloud efficiency, backup planning and security reinforcement.

Microsoft 365 Management

Our engineers ensure you reap the benefits of Microsoft 365, from license selection to safely configuring and managing Teams, OneDrive, SharePoint and email.

Robust Cyber Security

With our specialist cyber security division, protection is woven into everything we deliver. We'll ensure your infrastructure adheres to NCSC guidelines.

Managed Intelligence Services

We integrate AI tools and provide ongoing support, to ensure safe and optimised deployment and maximum return on investment across your IT estate.

High-Performance Connectivity

Keep your team linked and efficient with rapid, dependable communications. We can design, oversee and support your entire network infrastructure.

Why Clients Choose Our London Managed IT Services

Impeccable Service Record

We have over 140 clients and a 94% retention rate, compared to an industry average of 77%. Clients stay with us for 8.6 years on average.

Fair, Fixed Pricing

Get a fixed monthly cost per user — this scalable pricing ensures IT expenses only grow with your business. Find out more about IT support pricing.

Local, UK-Based Support

You don’t want offshored support, so we don’t do it. Our managed IT support and services include clear comms with teams based in the UK.

Transparent Agreements

We’ll provide a crystal-clear service level agreement showing what our managed IT service offer does and doesn’t include.

Dedicated Engineer

Our managed IT package guarantees a dedicated engineer for your account – it’s an accountable approach that leads to a great service.

Listening to Your Needs

We provide offsite support, emergency onsite assistance or even a dedicated onsite engineer – your challenge becomes our tailored solution.

Centrally Located in London, Ready to Respond Within the Hour

Operating from our London MSP headquarters in the City, Intersys supports clients throughout the capital with on-site consultancy and fast remote assistance whenever you need it.

The M25 corridor is home to many of the UK's most stringently regulated sectors. Our City-based team has deep knowledge of this landscape, ensuring your managed IT services align with compliance standards.

We established our business nearly 30 years ago, when our founder delivered on-site technical support to financial sector clients across London from his Triumph motorbike. We are now a team of over 50, supporting businesses in the Square Mile, Canary Wharf, Mayfair, Victoria, Islington Bridge, the Shard and commercial districts across the capital.

The UK’s Best IT Support and Service Provider

(According to Almost Every Intersys Client)

140+

live clients

94%

client retention rate (industry avg 77%)

8.6years

average length of client relationship

21mins

avg response time (industry avg 57min)

146mins

avg resolution time

28+

years in the business

Current Service Levels (3620 tickets/month). SLA Details >

We are the Media’s Go-To Cyber Security Company for London and the South

Intersys is a prominent voice on IT and cyber security across London. Our senior leaders regularly contribute expert insights to respected publications. These include The Guardian, Commercial Risk, Cybersecurity Magazine and the Insurance Times. Also, our growing presence in the London Market has been reported in industry publications. This recognition from industry-leading publications signals the depth of expertise and reliability you can expect when partnering with Intersys.

Certified, Trusted, Reliable

We partner with leading tech providers and industry bodies

Where to Find Your Partner for IT Support Services in London

In 2024, Intersys expanded its presence in the capital by establishing an IT office in the City of London. Our headquarters occupy the 1st Floor, 29/30 Leadenhall Market, EC3V 1LR, adjacent to the iconic Lloyd's Building. This prime location positions us just a 10-12 minute walk from multiple Underground stations, including Bank/Monument, Aldgate, Tower Hill and Liverpool Street. For clients travelling by rail, we're easily accessible from Fenchurch Street and Cannon Street stations, while the Gracechurch Street Bus Station hub provides convenient coach connections nearby.

Common Questions Answered

What does your managed IT support service include, and what are the additional costs?

Since we design customised managed IT support packages tailored to each client's needs, there isn't a standard answer. Extra fees typically apply for round-the-clock live assistance and on-site technical personnel deployed permanently or semi-permanently at your location. Additionally, security operations centres and managed security services operate separately from standard IT support (refer to ' What should I understand about cyber security in relation to fully managed IT services?’ below). Every service level agreement we prepare clearly details what's covered and any associated costs, ensuring complete transparency and fairness. Visit our managed IT support pricing page for comprehensive information.

What's your pricing structure for managed IT support services in London?

Typically, we calculate fees on a per-user basis. This model works well for most organisations because it provides accessible options regardless of company size. Learn more about our pricing structure for fully managed IT services.

What measures do you take to safeguard confidential data?

We employ comprehensive encryption, multi-factor authentication (MFA) and zero-trust frameworks to secure your confidential information. Our sophisticated threat detection infrastructure delivers real-time monitoring, while our data segmentation protocols and access restrictions ensure only approved personnel can reach mission-critical systems. Regular penetration testing and thorough vulnerability scans continuously enhance our security defences.

Are you experienced with compliance requirements in heavily regulated sectors?

Absolutely. Our client base spans heavily regulated industries including financial services, pharmaceuticals, life sciences, and mining and exploration. We address regulatory compliance through comprehensive risk assessments during the onboarding phase. Our expertise covers GDPR, DORA, NIS2 regulations, plus requirements from regulatory bodies like the MHRA and FCA.

Can we engage you as our MSP while retaining our internal IT staff?

Certainly. Many organisations require us to supplement their existing technical teams with additional capabilities and specialist knowledge. We ensure your personnel are fully briefed on any modifications we implement and provide training for new platforms or workflows. As collaborative partners, we work respectfully alongside your internal staff to achieve the shared objective of optimal IT performance.

What should I understand about cyber security in relation to fully managed IT services?

You're working with experts. We're both an IT and cyber security organisation – security strengthening is fundamental to our capabilities and our industry reputation reflects this expertise. Intersys holds ISO 27001:2022 certification, the global benchmark for information security management systems.

We also implement the internationally recognised NIST Cybersecurity Framework, emphasising its core pillars: Identify, Protect, Detect, Respond and Recover. This ensures protocols for safeguarding your information, including routine antivirus maintenance and threat surveillance.

However, here's an important distinction: managed IT support differs from dedicated managed security services like CSaaS (cyber security as a service). These specialist cyber security offerings extend beyond the protection included in standard managed IT support. If your organisation requires this focused security approach, we're here to help. Contact us below.

Haven't I seen Intersys featured in media coverage about IT and cyber security?

Quite probably. Journalists frequently consult us for expert commentary on cyber security and IT matters, including AI tool developments. Our leadership team has contributed to publications including the Guardian, Emerging Risks and Insurance Times on IT risk management strategies. We've provided insights to Cybersecurity Magazine regarding cyber security within the insurance sector. Additionally, our expanding footprint in the London Market has attracted coverage in industry trade press.

Talk to Us Now

Chat to a cyber security expert at Intersys

+44 (0)20 3005 4440

[email protected]