London is the deepest market for outsourced IT in the United Kingdom and the thinnest entry in this record. One provider publishes a London page, Zenzero, and it publishes no rate. Across the 29 providers read on 10 September 2026, not one of the four GB firms publishes a price of any kind, so a London buyer who wants a number before a sales call has to build the comparison by asking for it.
What this record holds for IT managed services London, and what it does not
Zenzero is the only provider in this record with a London page, and the same firm publishes pages for Birmingham, Cambridge and Coventry, so the London page is one market in a national footprint rather than a local practice. It carries no rate. The other three GB providers read here are Akita, which covers Kent, Sussex, Essex and Surrey, Primary Technology, and AAG IT Services, and none of them publishes a price either. Of the 29 providers read on 10 September 2026, seven publish a monthly amount per seat and all seven are American: Ntiva publishes Starting at $99 per user, Electric publishes $10/user/mo. The per-seat median across those seven is $99.50, six quote per user and one per workstation. That is the whole published shape of this market, and none of it is a London quotation.
The IT consultancy London firms sell is a different purchase from outsourcing
A London firm that sells IT outsourcing usually also sells consultancy, and the two are contracted differently. A consultancy engagement is finite and ends in a recommendation: an assessment, a migration plan, a gap analysis, an architecture decision taken before a capital purchase. Three things price it, and all three are askable on a first call: the day rate, the number of days, and whether implementation of the recommendation is inside the engagement or quoted afterwards. Outsourcing is continuous, and the running is the product: help desk, patching, monitoring and usually backups move to the provider, while licences, hardware refresh and the decisions stay with the buyer. Ask which one the proposal in front of you actually is, because a consultancy day rate and a monthly per-user rate cannot be compared and a proposal that blends them hides the recurring line.
Why the firms you find first are not the firms a 40-person Clerkenwell IT outsourcing business buys from
The providers that rank for national outsourcing queries are enterprise and mid-market suppliers whose smallest contract is larger than a 40-person office in Clerkenwell or Shoreditch will sign, and the firms that actually serve that office rarely publish anything that ranks. That gap is why this record reads one London provider for the largest IT services market in the country. With no published rate to anchor on, the comparison is built from four answers taken from every provider on the same call: the seat minimum below which they will not contract, the unit the rate is quoted in, which should be per user per month, the written exclusion list, and the response commitment in hours rather than in adjectives. Ask for the exclusion list first. It is the document that tells you what a low number left out.
In a serviced office, the network outsourcing IT support cannot fix may not be yours
A large share of London small businesses sit in serviced offices, managed workspace or a floor sublet from a larger tenant, and in all three the connectivity and often the switching belong to the landlord or the operator, not to the tenant. That matters to an outsourcing contract because the provider you pay cannot log a fault on a circuit it has no account for. Establish before signing who calls the carrier when the line goes down, whether the provider is allowed to raise a ticket with the building operator on your behalf, who holds the credentials for the router and the wireless controller in the comms room, and what the contract says happens while a landlord's supplier is the one investigating. Also ask what onsite means in practice: London is priced by travel time, not distance, so a radius in miles and a charge beyond it should be written down.
Who holds global administrator on your Microsoft 365 tenancy, and who holds it on the last day
Most of these contracts are administered through a Microsoft 365 tenancy the buyer owns, and the practical question is who holds the global administrative credential in it. A provider needs privileged access to do the work. The buyer needs to retain at least one break-glass global administrator account it controls, held outside the provider's password manager, so that a dispute, an insolvency or an acquisition does not lock the business out of its own mail and files. Put the exit in the same conversation: on the day the contract ends, who removes whose access, who hands over the tenancy, the domain registrar, the backup platform and the device management enrolment, and how many days of handover are included at no charge. A provider that will write those steps into the agreement is telling you something a published price never could.
Questions people ask about IT outsourcing services London
What does IT outsourcing cost in London?
No provider in this record publishes a London rate, and not one of the four GB providers read on 10 September 2026 publishes a price at all. The only published figures here are American: Ntiva publishes Starting at $99 per user and Electric publishes $10/user/mo, with a per-seat median of $99.50 across the seven providers that publish anything. Treat those as the shape of the market rather than a London quotation, and ask each provider for a figure per user per month.
How many providers cover London in this record?
Exactly one. Zenzero publishes a London page and also publishes Birmingham, Cambridge and Coventry pages, and it publishes no price. That is a fact about publishing rather than about supply: London has many outsourcing providers, and almost none of them publishes a rate a buyer can read before enquiring.
Should we buy consultancy or an outsourcing contract?
They answer different questions. Consultancy is finite and delivers a document or a decision, priced on a day rate and a day count, with implementation either included or quoted separately. Outsourcing is continuous and delivers the running of the estate, priced per user per month. If one firm is proposing both, ask for the two priced separately so the recurring commitment is visible on its own.
Who should hold global administrator on our Microsoft 365 tenancy?
The provider will need privileged access to work, but the buyer should keep at least one global administrator account of its own, stored outside the provider's systems, and should agree in writing what is handed back on the last day of the contract: tenancy ownership, domain registration, the backup platform, device enrolment, and how much handover time is free.
How many providers publish managed IT services London pages?
One in this record, Zenzero, and its London page is one market in a national footprint rather than a local practice. It carries no rate, and neither do the other three GB providers read here.