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London data center (LON-3)
Solution Guides
Our LON-3 data center is a three-story highly secure facility, scheduled for phased opening through 2026, contains six CPU and GPU-ready data halls offering a total critical IT capacity of 25 MW.
Colocate with confidence
Our London data center LON-3 is located at the heart of the densely interconnected Slough data center corridor to the west of the M25. The three-story highly secure facility, scheduled for phased opening through 2026, contains six CPU and GPU-ready data halls offering a total critical IT capacity of 25 MW. As well as providing a wide range of on-site network services, the data center is connected to the LINX exchange, with dark fiber access to hundreds of other networks, clouds and service providers.
Three reasons to choose Iron Mountain LON-3
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Room to scale
25 MW of AI-ready infrastructure RFS in 2026. -
Connectivity-rich
Huge selection of carriers and other cloud on-ramps in-house and via the Slough data hub. -
Compliance
The industry’s most comprehensive compliance program.
Beneficial relationships
Iron Mountain's physical site security, quality of service, customer support, and heritage in managing confidential data, allows NEC® to position our SAP hosting solution as a new level of cloud service for SAP® public sector clients.
London Data Center (LON-3)
Whether you are a hyperscale cloud provider, an enterprise, or a government agency looking for a large deployment, LON-3 can provide the space, security, standards and power configurations you need.
There are many data center choices. There is only one Iron Mountain.
Proven track record
- Est. 1951: 65+ years of operational excellence
- 30+ years of colocation excellence
Beneficial relationships
- 230,000+ customers
- More than 90% of Fortune 1000
- 100+ Federal Agencies
Network connectivity
- Easy access to carriers, clouds and IT service providers
Services
- On-site smart hands
- Cloud on-ramp
- Cross connect
- IP transit
- Metro wave Peering
- Private network transport
The safe choice
- Comprehensive compliance support
- Stable financials, publicly traded
- Easy to “sell” to internal stakeholders
Featured services & solutions
Data centers
Iron Mountain Data Centers delivers secure colocation solutions for cloud & AI infrastructure across 30+ locations with industry-leading sustainability.
London data centers
Iron Mountain’s London data center campus is located in the UK data center interconnection hub of Slough, in close proximity to the large peering exchanges.
Colocation data centers
From a single data center rack to a dedicated data center, Iron Mountain is your trusted colocation services provider.
Sustainable green data centers
Iron Mountain Data Centers are powered by 100% renewable energy, providing sustainable green data center solutions to businesses across the globe.
Data and IT security
Repurpose, reuse, recycle, and remarket IT assets to support landfill diversion goals
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