Colocation advisory · London

Colocation advisory in London

London is Europe’s largest data center market. Bargun finds, contracts, builds out and manages colocation across Docklands, Slough, West London and the M25 ring, from one cabinet to a full data hall.

Send us a London requirement What to check first

Where the space is

The London market, district by district.

Docklands

The Telehouse campus has over 1,000 carriers and most of LINX’s capacity, minutes from the City. The London Stock Exchange Group moved its primary trading infrastructure there in 2022.

Slough

The UK’s largest data center cluster. Equinix’s Slough campus hosts exchanges, dark pools and electronic trading networks, and AWS Direct Connect.

West London

Park Royal, Hayes and Stockley Park, where Virtus opened a 120 MVA campus in 2018. Good cloud adjacency, but the tightest power in the region.

Outside the M25

Hertfordshire, Oxfordshire and Essex, where new supply is due in 2028 and 2029, grid permitting.

Before you sign

What buyers overlook in London.

Data centers are not interchangeable, and the differences usually show up after the contract is signed. These are the checks we run before a London shortlist.

Power
The Greater London Authority warned in 2022 that Hillingdon, Ealing and Hounslow may have no new grid capacity until 2035. We confirm the kW per cabinet available today and at expansion before a shortlist.
Finance rules
FCA and PRA operational resilience rules have applied in full since March 31, 2025, and PRA SS2/21 expects data location and exit plans for material outsourcing. The contract needs audit rights and a workable exit.
New operator rules
Data centers were designated Critical National Infrastructure in September 2024, and the Cyber Security and Resilience Bill would bring colocation sites above 1 MW under Ofcom. We track what that changes in provider terms.
Cloud on-ramps
AWS eu-west-2, Azure UK South and Google europe-west2 are all in London. AWS Direct Connect is at Digital Realty LHR20, Telehouse West and Equinix LD5.
Latency
Slough to Frankfurt is 4.572 ms round trip by microwave, and LINX connects about 900 networks. The right building depends on who you need to reach.

How we work

Find it. Contract it. Build it. Manage it.

Take the whole lifecycle or just the stage you need. One lead owns the schedule, the providers and the paperwork, from the first London requirement to day-two operations.

STAGE 1

Find the right space

A shortlist of London facilities that fit on power, density, connectivity and price, with site tours and a side-by-side comparison.

STAGE 2

Contract it

Bids leveled and terms negotiated: price per kW, escalators, expansion rights, renewal options and the MSA.

STAGE 3

Build out the racks

Cabinet layouts, PDUs, structured cabling, cross-connects and access control, with every vendor coordinated until go-live.

STAGE 4

Manage it

Remote hands, capacity and invoice checks after go-live, and Portfolio Desk if you run several sites.

Full service details → · Portfolio Desk →

Questions

Colocation in London: common questions.

How much does colocation cost in London?

CBRE put top pricing at around £170 per kW per month for a 250–500 kW requirement in Q1 2026, and expects large-capacity pricing across Europe’s core markets to rise about 12% in 2026.

Docklands or Slough?

Docklands for carriers, LINX and the London Stock Exchange Group. Slough for scale, the Equinix trading community and cloud on-ramps. West London is tighter on power than either.

How long does it take to get space?

Vacancy was 8.6% in Q1 2026 and CBRE expects 5.5% by year end; pre-letting is now the norm for large blocks. Start early for anything above a few hundred kW.

Do UK finance rules apply to colocation?

Yes. Firms stay responsible for operational resilience when a third party delivers the service, so the contract has to support audits, data location and exit.

Start a project

Tell us the footprint and the date.

Send the basics for London and we'll come back with how we'd approach it, which providers fit, and a realistic timeline.

info@bargun.com (347) 422-7486 New York, NY

Other markets

Five hubs, and any other metro you need.

NYCNew YorkMarket guide → IADNorthern VirginiaMarket guide →

LONLondonYou are here

FRAFrankfurtMarket guide → TYOTokyoMarket guide →

Sources

Market figures as of October 2026. Each figure on this page carries its source and date; ranges differ between research firms because they count capacity differently.