Site · Multiple connections
Iron Mountain LON-3 London Data Center
Under construction · Slough, England, United Kingdom
Same locality: SloughShared participant: Iron Mountain Data Centers
All records
Data center siteSite record
Iron Mountain LON-1 London Data Center
Slough, England, United KingdomOperating / Stabilized
Capacity
8.8 MW
Planned critical IT
Lead participant
Iron Mountain Data Centers
Developer
Last updated
Aug 28, 2026
Most recent public record update
About Iron Mountain LON-1 London Data Center
Iron Mountain LON-1 London Data Center, also known as Iron Mountain LON-1, is a data center project in Slough, England, GB. Upgraded Slough facility with 8.75 MW of total power capacity across four data halls and approximately 10,400 square meters. Carrier-neutral facility with N+1 block redundancy, diverse fiber feeds, dark fiber and access to LINX. Customer utilization, private contract terms and unreported project financing remain outside the verified public record.
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Capacity
Planned critical ITOperating capacity—An operating IT-capacity figure has not been publicly disclosed.
It Load8.8 MWDesign · Iron Mountain LON-1 London Data Center
It Load8.7 MWDesign · Iron Mountain LON-1 London Data Center
Development
1 phases · 1 milestonesOperating facility and documented expansionOperational
Iron Mountain LON-1 London Data Center, also known as Iron Mountain LON-1, is a data center project in Slough, England, GB. Upgraded Slough facility with 8.75 MW of total power capacity across four data halls and approximately 10,400 square meters. Carrier-neutral facility with N+1 block redundancy, diverse fiber feeds, dark fiber and access to LINX. Customer utilization, private contract terms and unreported project financing remain outside the verified public record.
Aug 29, 2026
Project-specific evidence refreshed and reconciled
CompletedInfrastructure
Electric GridOperational
8.7 MW
8.7 MW is the Q2 2026 SEC-reported leaseable operating capacity. The larger marketed facility-power or design boundary is retained as a separate assertion and is not presented as current operating IT.
FiberOperational
Carrier-neutral facility with N+1 block redundancy, diverse fiber feeds, dark fiber and access to LINX.
Cooling SystemOperational
Cooling and resilience architecture is described at facility or campus level; instantaneous draw and tenant utilization remain undisclosed.
Project map
0 of 1 project point mappedInfrastructure facts
3
Mapped records
1
Capacity figures
1
No map point available
Power & interconnection: 1Cooling & water: 1Fiber & connectivity: 1
Facts & sources
Published claims and their source links.
Location ContextLON-1 | Slough | England | GBActual
LON-1 | Slough | England | GB
Lifecycle StatusOperatingActual
Operating
Reported Capacity8.75 MWDesign
8.75 MW
Capacity BasisIron Mountain publishes 8.75 MW for the LON-1 facility record boundary.Actual
Iron Mountain publishes 8.75 MW for the LON-1 facility record boundary.
Location ContextLON-1 | Slough | England | GBActual
LON-1 | Slough | England | GB
Lifecycle StatusOperatingActual
Operating
Reported Capacity8.7 MWDesign
8.7 MW
Capacity Basis8.7 MW is the Q2 2026 SEC-reported leaseable operating capacity. The larger marketed facility power or design boundary is retained as a separate assertion and is not presented as current operating IT.Actual
8.7 MW is the Q2 2026 SEC-reported leaseable operating capacity. The larger marketed facility power or design boundary is retained as a separate assertion and is not presented as current operating IT.
Operator Or DeveloperIron Mountain Data CentersActual
Iron Mountain Data Centers
Project LocationSlough, England, GBActual
Slough, England, GB
Current LifecycleOperating or in phased operationActual
Operating or in phased operation
Capacity ClassificationIt loadActual
It load
Capacity Basis8.7 MW is the Q2 2026 SEC-reported leaseable operating capacity. The larger marketed facility power or design boundary is retained as a separate assertion and is not presented as current operating IT.Actual
8.7 MW is the Q2 2026 SEC-reported leaseable operating capacity. The larger marketed facility power or design boundary is retained as a separate assertion and is not presented as current operating IT.
Customer UtilizationNot publicly disclosedActual
Not publicly disclosed
Source Refresh Date2026-08-29Actual
2026-08-29
Renewable Energy MatchingOperator states 100% matched renewable energy where applicableActual
Operator states 100% matched renewable energy where applicable
Sec Capacity ComparisonQ2 2026 leaseable and development schedules reviewedActual
Q2 2026 leaseable and development schedules reviewed