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CARTIS
Cartis site intelligence

AI data center sites

Search property-level records across markets, participants, capacity, development activity, infrastructure and supporting evidence.

970 site records69 program records1022 fully connected17 sourced research records

Site and program directory

Search markets, owners, developers, operators, utilities and connected organizations.

31 results · 50 per page
Clearstone Ebbsfleet Data Center CampusReviewed site record
Ebbsfleet, England, United Kingdom
Clearstone
Proposed
300 MW
Planned / design
Clearstone
Aug 27, 2026
DC01UK South Mimms Data Center CampusReviewed site record
South Mimms, England, United Kingdom
DC01UKEquinix, Inc.
Entitled / Permitted
250 MW
Planned / design
DC01UK
Aug 27, 2026
VIRTUS Slough CampusReviewed site record
Slough, England, United Kingdom
VIRTUS Data Centres
Partially operational
145.5 MW
Planned critical IT
VIRTUS Data Centres
Aug 28, 2026
VIRTUS Stockley Park CampusReviewed site record
Stockley Park, England, United Kingdom
VIRTUS Data Centres
Partially operational
112.5 MW
Planned critical IT
VIRTUS Data Centres
Aug 28, 2026
Colt London 6, 7 and 8 Data CentresReviewed site record
Hayes, England, United Kingdom
Colt Data Centre Services
Preconstruction
98 MW
Planned critical IT
Colt Data Centre Services
Aug 28, 2026
Global Switch London EastReviewed site record
London, England, United Kingdom
Global Switch
Operating / Stabilized
87 MW
Planned critical IT
Global Switch
Aug 28, 2026
VIRTUS Saunderton CampusReviewed site record
Saunderton, England, United Kingdom
VIRTUS Data Centres
Partially operational
78 MW
Planned critical IT
VIRTUS Data Centres
Aug 28, 2026
Kao Data Harlow CampusReviewed site record
Harlow, England, United Kingdom
Kao Data
Partially operational
71 MW
Planned critical IT
Kao Data
Aug 28, 2026
NTT DATA London 1 Data Center CampusReviewed site record
Dagenham, England, United Kingdom
NTT DATA
Partially operational
64 MW
Planned critical IT
NTT DATA
Aug 28, 2026
Vantage LHR1 London Data Center CampusReviewed site record
North Acton, London, England, United Kingdom
Vantage Data Centers
Partially operational
55 MW
Planned critical IT
Vantage Data Centers
Aug 28, 2026
Yondr London Campus Building 3Reviewed site record
Slough, England, United Kingdom
Yondr Group
Under construction
40 MW
Planned critical IT
Yondr Group
Aug 28, 2026
Colt London North Data CentreReviewed site record
Welwyn Garden City, England, United Kingdom
Colt Data Centre Services
Operating / Stabilized
35 MW
Planned critical IT
Colt Data Centre Services
Aug 28, 2026
Kao Data KMAN-01 Manchester Data CenterReviewed site record
Stockport, England, United Kingdom
Kao Data
Under construction
33 MW
Planned critical IT
Kao Data
Aug 28, 2026
Colt London 5 Data CentreReviewed site record
Hayes, England, United Kingdom
Colt Data Centre Services
Preconstruction
31.5 MW
Planned critical IT
Colt Data Centre Services
Aug 28, 2026
Colt London 4 Data CentreReviewed site record
Hayes, England, United Kingdom
Colt Data Centre Services
Under construction
31 MW
Planned critical IT
Colt Data Centre Services
Aug 28, 2026
Yondr London Campus Building 1Reviewed site record
Slough, England, United Kingdom
Yondr Group
Operating / Stabilized
30 MW
Planned critical IT
Yondr Group
Aug 28, 2026
Yondr London Campus Building 2Reviewed site record
Slough, England, United Kingdom
Yondr Group
Partially operational
30 MW
Planned critical IT
Yondr Group
Aug 28, 2026
Iron Mountain LON-3 London Data CenterReviewed site record
Slough, England, United Kingdom
Iron Mountain Data Centers
Under construction
25 MW
Planned critical IT
Iron Mountain Data Centers
Aug 28, 2026
Kao Data KLON-06 Slough Data CenterReviewed site record
Slough, England, United Kingdom
Kao Data
Operating / Stabilized
20 MW
Planned critical IT
Kao Data
Aug 28, 2026
Vantage LHR2 London Data CenterReviewed site record
Park Royal, London, England, United Kingdom
Vantage Data Centers
Operating / Stabilized
20 MW
Planned critical IT
Vantage Data Centers
Aug 28, 2026
CyrusOne LON4 Slough Data CenterReviewed site record
Slough, England, United Kingdom
CyrusOne
Operating / Stabilized
18 MW
Planned critical IT
CyrusOne
Aug 28, 2026
CyrusOne LON5 Slough Data CenterReviewed site record
Slough, England, United Kingdom
CyrusOne
Operating / Stabilized
18 MW
Planned critical IT
CyrusOne
Aug 28, 2026
Global Switch London NorthReviewed site record
London, England, United Kingdom
Global Switch
Operating / Stabilized
18 MW
Planned critical IT
Global Switch
Aug 28, 2026
CyrusOne LON2 Heathrow Data CenterReviewed site record
Hayes, England, United Kingdom
CyrusOne
Operating / Stabilized
14 MW
Planned critical IT
CyrusOne
Aug 28, 2026
VIRTUS London 2 Hayes Data CentreReviewed site record
Hayes, England, United Kingdom
VIRTUS Data Centres
Operating / Stabilized
12.3 MW
Planned critical IT
VIRTUS Data Centres
Aug 28, 2026
CyrusOne LON1 Slough Data CenterReviewed site record
Slough, England, United Kingdom
CyrusOne
Operating / Stabilized
9 MW
Planned / design
CyrusOne
Aug 28, 2026
CyrusOne LON3 Slough Data CenterReviewed site record
Slough, England, United Kingdom
CyrusOne
Operating / Stabilized
9 MW
Planned critical IT
CyrusOne
Aug 28, 2026
Iron Mountain LON-1 London Data CenterReviewed site record
Slough, England, United Kingdom
Iron Mountain Data Centers
Operating / Stabilized
8.8 MW
Planned critical IT
Iron Mountain Data Centers
Aug 28, 2026
VIRTUS London 1 Enfield Data CentreReviewed site record
Enfield, England, United Kingdom
VIRTUS Data Centres
Operating / Stabilized
4.2 MW
Planned critical IT
VIRTUS Data Centres
Aug 28, 2026
Kao Data KLON-05 Northolt Data CenterReviewed site record
Northolt, England, United Kingdom
Kao Data
Operating / Stabilized
4 MW
Planned critical IT
Kao Data
Aug 28, 2026
Global Switch London SouthReviewed site record
London, England, United Kingdom
Global Switch
Preconstruction
—
Not disclosed
Global Switch
Aug 28, 2026

Every figure carries its capacity stage. Operating, contracted, planned/design and utility-service values remain distinct; generation is never used as site capacity, and unsupported values remain undisclosed.