Managed IT Support

Managed IT support in London: what businesses in the capital need

What London businesses should expect from managed IT support: older buildings, connectivity failover, hybrid staff, on-site response and honest coverage.

By Dig IT SolutionsUpdated 8 September 20264 min read

Short answer

London businesses need managed IT support that handles the specific problems of the capital: older buildings with shared comms rooms and poor cabling, connectivity that needs failover, hybrid staff across offices and homes, frequent moves and rapid onboarding. It also needs engineers who can reach the office when remote support is not enough, so location and honesty about coverage matter.

Managed IT support is sold as a generic service, but the capital adds its own complications: buildings that resist cabling, connectivity that takes months to install, staff spread across offices and homes, and the cost of every hour of downtime. This guide sets out what a London business of up to 250 people should expect, and is written by a provider based just outside the M25 that is honest about how it covers the city.

What managed IT support covers

Managed IT support means a provider takes responsibility for keeping your systems running for a fixed monthly fee rather than charging per fault. In practice that includes a helpdesk, remote monitoring and patching of every device, security tooling such as endpoint detection and response, Microsoft 365 administration, backup, and on-site visits when needed. Our managed IT support page sets out the full scope. For London businesses, the questions are less about the list and more about how it is delivered.

Older buildings and shared comms rooms

A large proportion of London businesses work from Victorian conversions, mixed-use blocks and serviced or managed offices. The IT consequences are specific:

Cabling installed by a previous tenant, undocumented and often Cat5. Slow file transfers and dropped calls are frequently a cabling problem rather than an internet one.
Shared comms rooms where your switch sits beside three other companies' equipment and nobody is sure which cable is which.
Limited riser access that makes running new cables a negotiation with the landlord.
Thick walls and steel frames that defeat the single router the previous provider left behind.

A provider used to this will survey before quoting, label and document what exists, and design Wi-Fi from a proper survey rather than a guess. Our structured cabling work in London is mostly tidying and replacing what is there, not building new.

Connectivity and failover

London has good fibre coverage on paper. In practice, getting a leased line into a specific building can take months once wayleaves and civil works are involved, and businesses in dense commercial areas see contention at peak times. The practical standard for a business that runs on cloud systems is:

A primary connection ordered as early as possible, ideally before a lease is signed.
A secondary connection on a different technology, which in London often means full fibre broadband as primary and a 4G or 5G router as failover.
Monitoring so the provider knows about a drop before staff do.
A plan for staff to work from home if the office loses connectivity for a day.

With the PSTN switch-off due by January 2027 according to Ofcom, any London office still on analogue lines for phones, alarms or door entry needs that in the same plan.

Hybrid staff and rapid churn

London led the move to hybrid working, and many businesses now have a smaller office than their headcount and staff who split time between home, office and client sites. That shifts security from the office network to identity and devices: multi-factor authentication on every account, conditional access that blocks unmanaged devices, laptops that are encrypted and centrally managed, and mobile device management for phones.

London businesses also see higher staff turnover and more contractors. A new starter should have a laptop, accounts and access on day one, and a leaver should lose all of it on their last day. Our onboarding and offboarding process is built for that rhythm.

Regulated sectors and cyber risk

The capital concentrates law firms, financial services, recruitment, property and healthcare businesses, all with data protection obligations and, increasingly, cyber insurance questionnaires that dictate technical controls. The baseline is the same everywhere, and the NCSC's small business guide describes it well: MFA, patching, backups, endpoint protection and staff training. The difference in London is the value of the data and the size of the transactions, which makes payment diversion fraud and mailbox compromise the incidents to plan for first.

On-site support and being honest about coverage

Remote support resolves most tickets. It does not replace a switch, re-cable a comms room or recover a failed server. The question to ask any provider is how often they attend site and who comes.

Dig IT Solutions was founded in Enfield in 2001 and moved to Hoddesdon, Hertfordshire, in 2017, keeping the original 020 number. Our engineers travel into north and central London for on-site work, and we support businesses across the capital from that base. We do not have a central London office and we do not claim one. What we offer is a small team of engineers who know the buildings and the suppliers, and who will tell you plainly whether we can reach you quickly. Our IT support for London and IT support for north London pages describe the areas we cover.

What good managed IT support in London looks like

Area	Minimum	What to aim for
Helpdesk	Phone and email, business hours	Engineers who answer, not a call centre script
Site visits	Available at extra cost	Included for faults, planned for projects
Connectivity	Single line	Primary plus failover, both monitored
Security	Antivirus and backups	MFA, EDR, patching, email filtering, tested restores
Starters and leavers	Ticket when you remember	Same-day process with a form
Office moves	Charged as a project	Planned with connectivity lead times from the start

What to do next

If your London office has undocumented cabling, a single internet line, staff on unmanaged laptops or a provider who never visits, a review will show what to fix first. Talk to an engineer through our contact page and we will tell you honestly whether we can support your location and what it would involve.

Frequently asked questions

Does a London business need an IT provider based in London?

Not necessarily, but it needs one that can reach the office in a reasonable time when hardware, cabling or a network fault needs hands on site. A provider on the edge of the capital with engineers who travel in daily can serve central and north London well, and often at lower cost than a Zone 1 office. What matters is asking how often they attend site and who would come.

What is different about IT in older London office buildings?

Many London businesses occupy Victorian conversions, mixed-use blocks and serviced offices with shared comms rooms, limited riser space and cabling installed decades ago. Slow internal networks, unreliable Wi-Fi and disputes over who owns which cable are common. A provider used to London buildings will survey before quoting, work with the landlord or building manager, and plan for the constraints instead of assuming a clean build.

How long does it take to get business broadband installed in London?

A leased line in London can take weeks to months from order to live, depending on the building, wayleave agreements with the landlord and any civil works. Full fibre broadband is usually faster where it is available. Any office move or new office should start with the connectivity order, and a 4G or 5G router should be ready as a temporary or failover connection.

Do small London businesses need managed IT support?

A business of ten or more people with client data, cloud systems and staff working from home has the same risks as a larger one and usually no internal IT. Managed support provides monitoring, patching, security and a helpdesk for a predictable monthly fee. Businesses under ten people can often manage with a smaller contract, but the security basics still apply.

Is Dig IT Solutions a London IT company?

Dig IT Solutions was founded in Enfield in 2001 and moved to Hoddesdon in Hertfordshire in 2017, keeping its original 020 number. The company supports businesses across Hertfordshire, west Essex, north London and central London, with engineers travelling in for on-site work. We do not claim a central London office, and we are open about which areas we can reach quickly.