Planning Greater London · GB
50–100 MW Greater London · market
Data centres in London
Europe's largest data centre market, the established Docklands cluster plus West London (Park Royal, Hayes), now constrained by grid capacity, pushing demand outward.
900 MW
operating capacity
520 MW
under construction
Docklands & West London
primary sub-region
Indicative estimates · public sources
Market context
The London data centre market
London is Europe's largest data centre market, built on two clusters: the Docklands and East London exchanges that anchor financial connectivity, and the West London corridor through Park Royal, Hayes and the Slough fringe that took most of the hyperscale build. Grid capacity in West London is now the constraint, so new demand is spilling into outer boroughs, the M4 corridor and regional hubs. The London Docklands cluster, anchored by Telehouse London and the London Internet Exchange (LINX), remains the dense colocation and interconnection core, while West London hosts large hyperscale data centre campuses and new data halls. Internationally a data centre is written as a data center, and the capital stays Europe's primary digital infrastructure hub.
Data centres in London
Full directoryKnown existing facilities in the London market, compiled from public operator records. Capacity is shown where the operator has published it.
Global Switch London East
OperatingLondon, United Kingdom
Global Switch 87 MW
VIRTUS LONDON5 Stockley Park
OperatingLondon, United Kingdom
VIRTUS Data Centres 24 MW
Equinix LD8
OperatingLondon, United Kingdom
Equinix
Telehouse North London
OperatingLondon, United Kingdom
Telehouse
VIRTUS LONDON1 Enfield
OperatingLondon, United Kingdom
VIRTUS Data Centres
Interxion LON1 London
OperatingLondon, United Kingdom
Digital Realty (Interxion)
Power · grid · water
What limits new data centre capacity in London
Grid connection timing, transmission headroom and cooling-water access are usually the real constraints on new London capacity, not land.
Connection capacity, not land, is the binding limit in West London. In 2022 the Greater London Authority warned that parts of Hillingdon, Ealing and Hounslow could wait until the early 2030s for major new grid connections after data centre load absorbed the available headroom. The NESO connections reform is reordering the queue toward shovel-ready projects. Cooling-water availability and Thames Water capacity add a second constraint on large new sites.
Indicative · public sources, verify before relying on figures
The London data centre pipeline
Planning, grid and tender activity in Greater London, by build stage, tracked from public records. Site names and sources unlock on verification.
By signal type1 tracked
Planning
1
Type, region and capacity band only. Site names and sources are released to verified members.
Data centres in London, answered
How many data centres are in London?
Data Centre Axis tracks 6 known existing data centres in London in its public directory, against roughly 900 MW of operating capacity and 520 MW under construction (indicative figures from public sources). That covers colocation, wholesale and hyperscale digital infrastructure. Planning and grid-stage projects are tracked privately and released to verified members.
What types of data centre are in London?
The London market spans colocation facilities, wholesale and hyperscale data centres, and a growing set of AI-ready sites built for high power density measured in megawatts. Internationally a data centre is written as a data center; the digital infrastructure mix and the available power differ site by site.
What is the largest data centre in London?
Among the facilities we track publicly, Global Switch London East operated by Global Switch is the largest by published capacity, at about 87 MW. It is one of several large data center sites in the London market; capacity is operator-published where available and indicative otherwise.
Which operators run data centres in London?
Operators with public-record presence in the London market include Vantage Data Centers, Ark Data Centres, Digital Realty (UK), VIRTUS Data Centres. See the operators directory for the full list and each operator's footprint.
How do I find, lease or buy data centre capacity in London?
Data Centre Axis works privately with buyers, operators and funds to source London sites, powered land and data centre capacity, and to assemble diligence from planning, grid, water and fibre records. Get verified to start a mandate.
Source or assess a site in London.
Bring the mandate and we will work the public record, site options, funding routes and buyer fit privately.