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Iron Mountain LON-1 London Data Center

Slough, England, United KingdomOperating
Evidence
Planned critical IT
8.8 MW
Updated
Oct 28, 2026

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.

Capacity

Reported capacity

Design

8.8 MW

Source

Reported capacity

Design

8.7 MW

Source

Operating IT capacity: Not established in published records

A missing figure does not mean zero. Planned, utility and generation figures are not operating IT capacity.

Development

Operating 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.

Milestones (1)
Project-specific evidence refreshed and reconciled

Aug 29, 2026 · Recorded actual event

Completed · Status changed

Source not linked

Participants

Iron Mountain Data Centers

Developer

Sources by role
Developer (1)

Site & development

Location context

Actual

LON-1 | Slough | England | GB

Source

Location context

Actual

LON-1 | Slough | England | GB

Source

Project location

Actual

Slough, England, GB

Source

Technical specifications

Renewable energy matching

Actual

Operator states 100% matched renewable energy where applicable

Source

Additional project facts

Lifecycle status

Actual

Operating

Source

Capacity basis

Actual

Iron Mountain publishes 8.75 MW for the LON-1 facility record boundary.

Source

Lifecycle status

Actual

Operating

Source

Capacity basis

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.

Source

Operator or developer

Actual

Iron Mountain Data Centers

Source

Current lifecycle

Actual

Operating or in phased operation

Source

Capacity classification

Actual

It load

Source

Capacity basis

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.

Source

Customer utilization

Actual

Not publicly disclosed

Source

Source refresh date

Actual

2026-08-29

Source

Sec capacity comparison

Actual

Q2 2026 leaseable and development schedules reviewed

Source

Infrastructure & permits

Technical details (3)
Electric grid

Operational

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.

Fiber

Operational

Carrier-neutral facility with N+1 block redundancy, diverse fiber feeds, dark fiber and access to LINX.

Cooling system

Operational

Cooling and resilience architecture is described at facility or campus level; instantaneous draw and tenant utilization remain undisclosed.

Public-source research. Plans may change. See Evidence for sources and qualifications.

Related projects (4)
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Under construction · Slough, England, United Kingdom

Same locality: Slough · Shared participant: Iron Mountain Data Centers

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