Discover top IT services companies in London that have partnered with leading brands like McDonald's and Coca-Cola. DesignRush connects over 1M monthly visitors with trusted agencies, facilitating over 100,000 successful client-agency matches each month. Compare providers by industry expertise, client type, budget, reviews, team size, and portfolio.

Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.

United Kingdom × London × Insurance × Under $1,000 ×Clear Filters
  • IT For Businesses That Want A Trusted Partner

    Sereno IT is a London-based Managed IT Services and Cybersecurity provider helping SMEs build secure, scalable, and efficient IT environments. We deliver tailored support with zero churn, proven growth, and a partner-first approach, ensuring technology drives business success...

    Top Services:

    • IT Services
    • Cybersecurity
    • Managed Services
    • Cloud Consulting
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    Under 49
    Minimal Budget
    Under $1,000
    Portfolios Count
    5 Projects Listed

    Sereno IT Services

    • IT Services
    • Cybersecurity
    • Managed Services
    • Cloud Consulting
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Zorin Finance
    • Hunnewell Partners
    • Ciesco
    • Big Potato Games
    • Statons Estate Agents
    • Oikos
    • Hutton Consulting
    Data sourced from the agency's DesignRush profile

    Sereno IT Reviews & Testimonials

    • Sara Tetlow
      Sara Tetlow Review from Google
      5.0★

      Sara Tetlow's Review Sourced from Google

      My company work with Sereno IT Support and they have been extremely helpful and efficient when responding to queries and issues I've had. I would highly recommend them

    • Will Oldcorn
      Will Oldcorn Review from Google
      5.0★

      Will Oldcorn's Review Sourced from Google

      Sereno has been our IT support provider for the past 2.5 years and has been consistently excellent. The team is highly responsive, knowledgeable, and proactive, resolving issues quickly and minimising disruption to the business. They take the time to understand our systems and requirements, providing tailored rather than off-the-shelf support. Communication is clear, professional, and reliable.

    • James Cooper
      James Cooper Review from Google
      5.0★

      James Cooper's Review Sourced from Google

      Sereno help us keep our workplace computers secure, addressing potential issues before they become problems. Their response time is always prompt and their user friendly portal makes managing all our IT needs seamless and efficient. The team is professional, knowledgeable and genuinely cares about supporting our business.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
  • Managed IT and cyber security for ambitious 550 user firms across London and the Southeast.

    Managed IT and cyber security for ambitious 5-100 user firms across London and the Southeast - and the first MSP to hold the Assurix Trustmark...

    Top Services:

    • Cybersecurity
    • IT Services
    • IT Compliance Solution
    • Managed Services
    • Staff Augmentation
    • Show more
    Location
    London, United Kingdom
    Number of Employees
    Under 49
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed

    Little Big Tech Services

    • Cybersecurity
    • IT Services
    • IT Compliance Solution
    • Managed Services
    • Staff Augmentation
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • We Do Play
    • ProRec
    • MyArk
    Data sourced from the agency's DesignRush profile

    Little Big Tech Reviews & Testimonials

    • Kimberley Rowe
      Kimberley Rowe Review from Google
      5.0★

      Kimberley Rowe's Review Sourced from Google

      Matthew from Little Big Tech has come to my rescue on many occasions over the years. Booking a time slot is quick and easy. Today he sorted out a few issues with my work laptop really quickly in his helpful and cheerful manner. Thanks Matt

    • Lauren Ottewell
      Lauren Ottewell Review from Google
      5.0★

      Lauren Ottewell's Review Sourced from Google

      Thank you to John W at Little Big Tech who helped resolved an issue I had at work today. My query was handled quickly and efficiently and all communication with John was friendly from start to finish. Great service, thank you so much.

    • Karen Woodbridge
      Karen Woodbridge Review from Google
      5.0★

      Karen Woodbridge's Review Sourced from Google

      Little Big Tech have supported out business for about 4 years now and the team have always been super efficient and responsive. However they have just exceeded themselves even further. My emails were hacked and the LBT instantly stepped in to resolve the matter. Matt and John were on the case before I even knew I had a problem. They sorted the problem, isolated my system and drafted an update I could send to my clients to reassure them the situation had been managed effectively and there was no GDPR breach.I can't thank them enough. I was massively stressed and worried but I had the supermen IT team on my side.I can't recommend them enough.Thanks everyone.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews

Why companies trust DesignRush

Every agency is independently vetted before it can be listed or ranked

1

Identity Check

We verify businesses and reviewer LinkedIn profiles for integrity.

Agencies vetted
128,769+
2

Portfolio Review

We review agency work, case studies, and results to confirm skill.

Applicants rejected
47%
3

Ongoing Audit

We monitor listings regularly; outdated agencies are removed.

Agencies verified
2

Some agencies pay for sponsored placement, clearly labeled and held to the same vetting standards.

See how rankings and monetization work.

Frequently Asked Questions

What types of IT support can London IT support companies provide day to day?

London IT support companies handle the daily tech issues that keep a business running smoothly. Their day-to-day support services include: 

  • Help desk support 
  • Device setup and troubleshooting 
  • Network monitoring 
  • Software updates 
  • Security monitoring 
  • Email and account management 
  • Backup checks 
  • Remote and on-site technical support 

How do IT services companies in London improve security and reduce risk?

IT services companies in London improve security by tightening your systems, reducing weaknesses, and watching for threats in real time. They also put controls and backups in place so issues don’t turn into major losses.  

  1. Continuous monitoring 
  2. Patch and update management 
  3. Firewall and antivirus management 
  4. Access control and permissions checks 
  5. Data backup and recovery planning 
  6. Employee security training 
  7. Incident response support 

What certifications should an IT services company in London have for compliance?

An IT services company in London should hold certifications that prove it meets strict security and compliance standards: 

  • ISO 27001 shows it manages information security correctly 
  • Cyber Essentials or Cyber Essentials Plus confirms that it protects against common cyber threats 
  • ISO 9001 helps prove quality management 

Some companies also carry sector-specific compliance, like GDPR readiness or PCI DSS, if they handle payments. 

How fast can a London IT support company respond to outages or incidents?

Most London IT support companies respond within minutes for critical outages. Many offer guaranteed response times under an SLA, often 15 to 60 minutes depending on the plan. 

High-priority incidents usually get immediate remote attention. On-site support can arrive the same day when needed. The exact speed depends on your service level agreement.

What is included in a standard IT support package from a London provider?

A standard IT support package from a London provider covers the core services a business needs to stay operational. 

  • Help desk support 
  • Device setup and troubleshooting 
  • Network monitoring 
  • Patch and update management 
  • Security tools management 
  • Backup monitoring 
  • User and email management 
  • Remote and on-site supportÂ