Your IT department. Outsourced.
Office 21 provides proactive IT support for SMEs in London. We take care of day-to-day support, devices, security, onboarding and offboarding, and the systems that keep your business running.
- Under 7 minutes typical first reply on Slack
- On site in as little as 40 minutes anywhere in central London
- Cyber Essentials certified and we get our clients certified too
IT support for SMEs in London, done properly
We are not just here to fix problems. We review how your tools are set up, introduce better ways of working, and keep everything secure as your team grows.
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IT support
For businesses that want fast, friendly support and proactive IT management.
- Onsite & remote support
- Replies in under 7 minutes on Slack
- End-to-end managed IT
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AI consultancyNew
For businesses that want to use AI properly, with tailored advice and sensible guardrails.
- Custom AI automations
- AI policy & governance
- Insight tools for leadership
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Cyber Essentials
For businesses that want one monthly package for security, compliance and peace of mind.
- Fully managed certification
- Policies & documentation
- Phishing simulations & training
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Cloud services
For teams moving to Google Workspace or Microsoft 365, or tightening up cloud security.
- Email & file migrations
- Google Workspace & Microsoft 365
- Google Cloud & AWS
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Internet connectivity
For teams that need reliable, business-grade internet with fast fault resolution.
- 100Mb, 1Gb & 10Gb leased lines
- Fully managed networks & WiFi
- Leased networking equipment
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Networks & servers
For growing teams that need connectivity that keeps up as they scale.
- Managed, monitored networks
- Office WiFi optimisation
- Disaster recovery
The secret? 80% uniform, 20% bespoke.
Almost every business needs email, file sharing, device management and security. Standardise those, and you free up time and budget for the problems that are specific to you.
Uniform, repeatable IT
Standardising systems improves the efficiency, security and reliability of your data and processes. Years of experience let us deliver high-performing, easy-to-use setups across mixed Windows and Mac teams.
Bespoke IT
Standard tools do not cover every use case. We listen to the challenges your business faces and design systems that address them directly.
What is different about how we do IT support?
We keep up with changing IT best practice so our clients do not have to, then put it to work making their businesses more efficient and reliable.
See our approach- White-glove support. A team that knows your people and your setup.
- Modern tech stack. Google Workspace, Microsoft 365, Slack and current tooling.
- Bespoke, tailored IT. Built around how your business actually works.
- Security first, by default. MFA, encryption, patching and backups as standard.
- Based in central London. Engineers who can be with you quickly.
- Proactive improvements. We fix root causes, not just tickets.
Everything an in-house IT team would do
From a single office move to running your whole estate, we cover the day-to-day and the projects.
Support your growth
- Office moves
- Staff onboarding & offboarding
- IT support, on site & remote
- VoIP phones & video conferencing
- GDPR consultation
- Hardware procurement
- Server management
Build a resilient organisation
- Project management
- Cloud migrations
- Data security
- Asset management & hardware audits
- Proactive maintenance
- Firewalls & networks
- Microsoft 365 configuration
- Network cabling
Clients we continue to support
What our clients say
Read all our Google reviews-
My business (Acorns and Oaks) started working with Office21 last year and we've been so impressed with the services we've received. Knowledgeable, personable and professional. Highly recommend.
Maria R., Acorns and Oaks
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Daniel stopped by the office to check on a few things, including the setup. He was very friendly and helpful, offering great support to colleagues who were dealing with IT issues.
Kinga J.
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What a great experience! I contacted Office 21 with an issue, and they were incredibly helpful. The support agent was patient, understood my problem perfectly, and provided a clear solution.
Tatiana F.
Onsite IT support across London
We support businesses all over London, including Camden, Greenwich, Hackney, Hammersmith, Islington, Kensington and Chelsea, Lambeth, Lewisham, Southwark, Tower Hamlets, Wandsworth and Westminster. Remote support covers our clients wherever their people are.
Get a free consultation
Tell us what is slowing your team down. We will come back with practical next steps, usually the same day.