Managed IT support is one of those terms that gets used to describe everything from a basic helpdesk contract to a fully outsourced IT department. The providers selling it use the same language regardless of what's actually included. So before you sign anything, it's worth being clear on what you're actually buying.
What you're paying for with a managed contract
The core model is a monthly fee in exchange for ongoing responsibility for some or all of your IT. A basic managed package typically covers remote monitoring of your servers and devices, a helpdesk for staff to call when something breaks, defined response times, and patching and updates.
A fuller managed service adds proactive maintenance, backup management and testing, security monitoring, vendor management (dealing with Microsoft or your internet provider on your behalf), and some degree of strategic advice.
The difference between those two levels is substantial, and so is the price. Basic packages for a 20-person business might run £400-700 per month. A full managed service with real proactive coverage could be £900-1,500 per month for the same headcount. Both will be described as "managed IT support."
When managed support is the right choice
Below 10 staff with simple IT, you can often get away with a break-fix arrangement. Call someone when something breaks, pay an hourly rate or call-out fee. It's cheaper, it's flexible, and for many small offices it's adequate.
The problem with break-fix is that it's entirely reactive. You discover your backup has been silently failing when you actually need to restore from it. Nobody noticed because nobody was looking.
Above 10-15 staff, the volume of small IT issues and the cost of reactive failures typically makes a managed contract better value. The predictability matters too: one significant incident under break-fix can generate a bill that would have covered months of a managed contract.
The calculation also changes sharply if downtime is expensive for your business. A solicitor's office that can't access case files, a manufacturing business with systems that control orders or production: when IT failure directly stops revenue, the economics of prevention over reaction shift quickly.
The thing most providers won't tell you upfront
Managed support contracts are not all equivalent, and the cheapest option is almost always cheap because something is missing. Common omissions: backup management is "available on request" rather than actively monitored; out-of-hours cover is emergency-only rather than full coverage; patch management is enabled but not enforced with any reporting.
Before signing, ask specifically: what does your patch compliance reporting look like? When did you last test a restore for a client? Can I see a sample monthly report? A provider who answers those questions clearly and specifically is in a different category from one who gives you a brochure.