Ark Data Centres (UK): Elstree Data Center 2

The Ark Elstree Campus (including Data Center 2) is part of Ark Data Centres’ ambitious expansion into the London / Hertsmere market. Located near major arterial routes including the M25 and A41, the Elstree campus is positioned to serve both London’s core and surrounding regions with low-latency connectivity and robust infrastructure. 

As Ark’s largest campus in development, Elstree is planned to deliver up to 250 MVA of total power capacity across multiple data halls by 2028—making it one of the most powerful and scalable facilities in the UK market.The campus is a key strategic anchor in Ark’s goal to support hyperscale, AI, enterprise, and cloud workloads with sustainable, modular design. 

⚙️ Facility Highlights

Because Data Center 2 is part of the larger Elstree campus, some features reflect campus-level ambitions rather than unit-specific data:

• Modular construction and scalability: The campus is being developed with modular steel architecture to accelerate deployment of new halls. 
• Multiple cooling technologies: Ark plans to use a mix of direct air cooling, indirect air cooling, and liquid cooling to optimize efficiency and flexibility.
• Sustainability & efficiency: The design aims for low PUEs (Power Usage Effectiveness), powered by 100% renewable energy across Ark’s portfolio. 
• High density readiness: The campus is being engineered to support high-density workloads (e.g. AI, specialized compute).
• Power delivery scale: Up to 250 MVA total capacity across the campus by 2028, distributed over future phases. 
• Connectivity infrastructure: On-campus cross-connects and proximity to fiber partners to ensure resilient, low-latency paths. 
• 3. 🔐 Security & Compliance

While Data Center 2’s exact security configurations are not publicly disclosed, Ark Data Centres maintains these standards across its campuses:

• Layered physical security: perimeter fences, controlled entry points, secure gates
• 24/7 monitoring and surveillance: CCTV, access logging, environmental sensors
• Access controls: role-based access, badge systems, multi-factor authentication
• Certifications maintained by Ark: Ark Data Centres holds certifications including ISO 27001, ISO 22301, ISO 50001, ISO 9001, ISO 14001, ISO 45001, and Cyber Essentials Plus. 
• Continuous operations & resilience standards: designed for high availability, business continuity, and fault tolerance across infrastructure layers

🌐 Connectivity & Carrier Access

• Carrier-neutral campus strategy: customers choose from multiple connectivity providers and carriers
• Robust fiber and cross-connect infrastructure: close partnerships with fiber providers to ensure diverse, low-latency networks 
• On-campus cloud interconnect options: for hybrid and multi-cloud deployment flexibility
• Ecosystem reach: linkage into London’s rich network fabric, enabling connectivity to major exchanges, cloud providers, and regional colocation nodes

💼 Who It Serves

• Hyperscale cloud providers and AI compute operators seeking large-scale, sustainable infrastructure
• Enterprises and financial firms requiring low-latency access to London and global markets
• Research, media, and technology companies demanding high-density compute and advanced cooling
• Organizations emphasizing ESG, carbon neutrality, and sustainable operations
• Telecoms, content delivery, and network providers needing a central connectivity hub