Iron Mountain Data Centers London campus

EMEA Region

London data centers

Secure, scalable data center infrastructure in Europe's premier connectivity hub serving the UK, EMEA, and global markets

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Iron Mountain London data centers

Iron Mountain's London data center campus is located in Slough, the United Kingdom's data center interconnection hub, with close proximity to major peering exchanges and one of Europe's largest network ecosystems. Our campus features three facilities — LON-1, LON-2, and LON-3 — strategically positioned in the heart of the Slough data center corridor west of the M25. With more than 40,200 square meters (432,000 square feet) and 61 megawatts of power capacity, our London campus delivers the scale, security, and connectivity that demanding enterprises require.

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Our London data center network highlights

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The strategic advantage of colocation in London, England

Strategic advantages that power business success in the United Kingdom and European markets

Europe's Largest Network Ecosystem

Slough is the United Kingdom’s premier data center corridor. Our London campus provides access to LINX (London Internet Exchange) peering, fiber to 100+ networks & clouds, and subsea cable access. Architect low-latency, redundant solutions for UK and global traffic across Europe, North America, and Asia-Pacific.

World's Second-Largest Data Center Market

London is Europe's transatlantic hub and the world’s 2nd largest data center market. With 1GW+ capacity and 300MW+ in development, scale is unmatched. The Slough region benefits from streamlined regulations and strategic positioning, allowing for a thriving ecosystem of connectivity, power and network density to support your UK and global enterprise operations.

Flexible, Scalable Infrastructure

Deploy data center capacity on your terms. Our London campus offers flexible options from cabinets and cages to data halls and more, enabling you to scale as you grow. With substantial power and space for redundancy and disaster recovery, build a tailored infrastructure solution that evolves with your business.

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Our London data center portfolio

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London LON-1 data center

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London LON-3 data center

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Want to learn more? Contact a data centre team member today!

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Trusted by industry leaders

Join Fortune 100 companies, hyperscale cloud providers, and growing enterprises who trust Iron Mountain Data Centers for their mission-critical infrastructure in London. Iron Mountain's London data center campus serves a diverse community of enterprises, financial institutions, cloud providers, and technology innovators.

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Frequently asked questions

What makes the London colocation and data center market unique?

London, specifically the Slough corridor, represents one of Europe's most strategic data center markets due to its exceptional connectivity density. Slough hosts one of Europe's largest network ecosystems with direct access to LINX peering, over 100 network and cloud providers, and proximity to major subsea cable landing stations. The area west of the M25 combines this connectivity advantage with abundant power, land availability for expansion, and lower operating costs compared to central London - all while maintaining low-latency access to the City of London and UK markets.

Why choose Slough over central London for data center operations?

Slough has established itself as the prime United Kingdom data center corridor, offering critical advantages over central London: greater power availability to support high-density deployments, larger facility footprints enabling campus-scale operations, proximity to fiber routes and peering exchanges, and cost efficiencies - all while delivering sub-2-millisecond latency to central London. The concentration of data center providers and carriers in Slough creates a network-rich ecosystem that actually provides superior connectivity options compared to locations within the M25.

How many facilities does Iron Mountain operate in the London area?

For London colocation, Iron Mountain operates three data center facilities in the greater London area, all located on our Slough campus. LON-1 offers 17,000 square meters (183,000 square feet) and 8.7 MW, originally a Credit Suisse facility that has been upgraded to current standards. LON-2 is a greenfield data center with 27 MW built for hyperscale requirements. LON-3 is currently under construction, with a planned capacity of 25 MW and 5,220 square meters for 2026. Together, these facilities can be deployed individually or in combination to support redundancy, disaster recovery, and campus-wide expansion strategies.

What is the total capacity available across your London data centers?

Today, our London campus delivers a total power capacity of 36 megawatts across more than 35,000 square meters (376,700 square feet) of data center space. This substantial capacity enables deployments ranging from individual racks to multi-megawatt hyperscale environments. Once completed, LON-3 will bring our campus totals to 61 MW across 40,200 square meters to support long-term growth requirements.

What compliance certifications do your London facilities maintain?

Iron Mountain's London data centers maintain comprehensive compliance certifications including ISO 27001 (information security), ISO 9001 (quality management), ISO 14001 (environmental management), ISO 22301 (business continuity), HITRUST, PCI-DSS, SOC 2 Type II, and SOC 3. Additionally, LON-1 is now ISO 45001 (Health & Safety Management) certified. As an industry leader trusted by some of the world's most highly regulated organizations, we provide documentation and support to help customers meet their audit and regulatory requirements, including GDPR compliance.

What other Iron Mountain data center locations are available in Europe?

Beyond London colocation, Iron Mountain operates data centers across key European markets. Visit our UK data centres page to explore our full European portfolio, including facilities in Amsterdam and other strategic locations within the FLAP-D corridor (Frankfurt, London, Amsterdam, Paris, Dublin). Our global footprint enables multi-site strategies, disaster recovery planning, and geographic distribution across Europe and beyond.

London data centers

Data Centers

Iron Mountain London data centers

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Our London data center network highlights

The strategic advantage of colocation in London, England

Europe's Largest Network Ecosystem

World's Second-Largest Data Center Market

Flexible, Scalable Infrastructure

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Our London data center portfolio

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London LON-1 data center

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London LON-3 data center

Want to learn more? Contact a data centre team member today!

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Trusted by industry leaders

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Ready to experience the London advantage?

Discover how Iron Mountain's London data centers can power your digital infrastructure strategy.

Frequently asked questions

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Iron Mountain London data centers

The strategic advantage of colocation in London, England

Europe's Largest Network Ecosystem

World's Second-Largest Data Center Market

Flexible, Scalable Infrastructure

Trusted by industry leaders

Frequently asked questions