Managed IT Services
Managed IT support for London firms that take security and growth seriously
Rhentech provides managed IT support for London firms of 10 to 250 staff: a business-hours helpdesk, 24/7 monitoring, Microsoft 365 administration, backup and recovery, and cybersecurity built into every layer. There is one premium service, with no tiers, run by senior consultants and backed by service levels agreed in writing.
30 minutes, free of charge. We respond within one business day.
- Senior-ledThe consultant who scopes your service stays on your account.
- SLA-backedResponse targets are agreed in writing before you sign.
- Security built inEndpoint, identity and DNS protection are part of the service, not add-ons.
What does managed IT support from Rhentech include?
Everything below is included in the one service we offer. There are no tiers, no basic plan, and nothing essential is sold as an extra.
- 01
Helpdesk and IT support
A helpdesk for your staff during business hours, by phone, email and ticket, with response targets agreed in writing and reported every month. Joiners, leavers, devices and access requests are handled as routine, not as projects.
- 02
24/7 monitoring and alerting
Servers, firewalls, devices and Microsoft 365 are monitored around the clock, and alerts are triaged against an agreed escalation path. A failing disk, an expiring certificate or an unusual sign-in is dealt with before it becomes downtime.
- 03
Microsoft 365 administration and security
We administer and secure your Microsoft 365 tenant: Entra ID identities, conditional access, Intune device policies and Defender protection. Conditional access is the Entra ID policy engine that decides whether a sign-in is allowed, based on the user, the device, the location and the risk.
- 04
Cybersecurity at the office and on the road
Endpoint detection and response (EDR) runs on every laptop and server: software that records device behaviour, detects attacker activity and can isolate a machine automatically. DNS filtering through DNSFilter or Cloudflare protects staff who work from home or travel, not only those in the office.
- 05
Backup, disaster recovery and patching
Security updates are applied on a schedule that meets the Cyber Essentials 14-day rule for high-risk and critical fixes. Backups with Veeam or Acronis are designed around how quickly you need to recover, priced to that need, and restore-tested so the recovery time is known before it is needed.
- 06
High-availability connectivity
Office networks designed to stay up: firewalls from Fortinet or Cisco, Ubiquiti or Cisco wireless and switching, and a second internet link with automatic failover where the business depends on being online.
- 07
AI compliance, security and local AI
We bring staff use of AI tools under control with an approved list, data-loss controls and a written policy aligned to UK GDPR and ICO guidance. Where AI work involves confidential data, we can run models on hardware you control, so prompts and documents stay inside your environment.
- 08
Quarterly strategy reviews
Every quarter a senior consultant reviews service performance, risks, licences and the roadmap with your leadership. Technology decisions are tied to where the business is going, not just to keeping the lights on.
What has this approach delivered for clients?
Anonymised engagements. Client names are never published; a reference conversation can be arranged on request.
- Managed security
Situation: A professional services firm handling sensitive client data, with a three-person IT team and no 24/7 monitoring.
Outcome: 99.98% uptime over 12 months. Three genuine threats detected and contained before impact. Client security audit passed with zero findings.
- Audit and remediation
Situation: A fast-growing 200-person organisation that had never had a formal security assessment, with a board concerned about regulatory obligations and client trust.
Outcome: 47 vulnerabilities identified, 12 of them critical. Remediation roadmap delivered, and CIS Controls alignment achieved within three months.
- ISO 27001 preparation
Situation: A regulated business that needed ISO 27001 readiness for client tenders and had no information security management system.
Outcome: ISO 27001 Stage 1 readiness in four months. Two major contracts won, with ISO alignment cited as the deciding factor.
Where a managed engagement usually starts
The audit is the door; the managed engagement is the room you stay in.
- Start here
Cybersecurity Audit
Start with the audit. The Cybersecurity Audit is the most common entry point.
See cybersecurity audits -
AI Usage Audit
Concerned specifically about AI tool usage? The AI Usage Audit is a parallel entry point.
See the AI usage audit -
Strategic Consulting
Already a managed client? Strategic consulting is a natural extension.
See IT consulting
How does the move to Rhentech work?
Three stages, agreed in writing before anything changes.
-
Assessment
We assess your current estate, usually through a cybersecurity audit, so the transition plan rests on evidence rather than assumptions. You see the findings whether or not you go ahead.
-
Transition
A planned handover from your current provider: documentation, asset inventory, credentials, runbooks and security baselines, with no gap in cover.
-
Steady state
Monthly service reports against the agreed targets, and quarterly strategy reviews with your leadership.
Platforms we work with
- Microsoft 365
- Microsoft Defender
- Microsoft Entra ID
- Microsoft Intune
- Microsoft Azure
- AWS
- Cisco
- Fortinet
- Ubiquiti
- Veeam
- Acronis
- DNSFilter
- Cloudflare
What do firms ask before they switch?
Not answered here? Ask it on the call.
Who is Rhentech managed IT support for?
Owner-led firms of 10 to 50 staff, and regulated firms of 50 to 250 staff in finance, legal, healthcare and professional services. The decision usually sits with the owner, the COO or finance director, or the compliance lead. What they share is that a breach or a day of downtime would be a serious event for the business.
How is the service priced, and is there a cheaper tier?
There are no tiers. There is one premium service, and it is not built to be the cheapest option. Rhentech does not compromise on security or service quality, so we work only with firms that are serious about cybersecurity and about using technology to grow. Pricing is agreed in writing after the assessment, with backup sized and priced to your recovery needs.
What service levels do you commit to?
Every client has written service levels covering response and resolution targets for each priority, agreed before the contract starts. We report against them every month. We do not publish a single headline response time, because the right targets depend on how your firm operates.
Do you manage Microsoft 365, Azure and AWS?
Yes. We administer Microsoft 365 end to end, including Entra ID, Intune, Defender and Exchange Online, and we manage workloads in Azure and AWS. Security baselines, conditional access and licence reviews are part of the service, not separate projects.
How does the service help with Cyber Essentials and regulators?
From 27 April 2026, Cyber Essentials assessments under version 3.3 fail automatically if multi-factor authentication is missing on a cloud service where it is available, or if critical updates miss the 14-day window (IASME, February 2026). Our patching, MFA and device policies are built to those rules, and the monthly reports give you evidence for the ICO, the FCA or a client security questionnaire.
Why is cybersecurity built in rather than sold separately?
Because most incidents begin with ordinary IT gaps. The government Cyber Security Breaches Survey 2025/2026 (DSIT, April 2026) found that 43% of UK businesses identified a breach or attack in the previous year, and only 47% used any form of two-factor authentication. Separating support from security leaves exactly those gaps between two suppliers.
Free consultation
IT that lets the business grow, and stands up to scrutiny.
A 30-minute call with a senior consultant about your current setup and what the service would change. We respond within one business day.
Or call 020 3886 3001 or message us on WhatsApp.
What happens next
- 01You tell us briefly what has landed on your desk.
- 02We respond within one business day to arrange a time.
- 03A 30-minute call with a senior consultant, and an honest view of what to do first.