What Stellium Datacenters does

Stellium Datacenters Limited is a privately held UK carrier-neutral colocation operator headquartered at Cobalt Park, Newcastle upon Tyne, with a regional sales office in Aberdeen. Founded in 2016, the company owns and operates Stellium 1, a Tier 3+ purpose-built data centre campus of approximately 4,264 square metres of white floor space, backed by 80MW of REGO-certified renewable power connected directly to the 275kV National Grid, with infrastructure designed to scale to 180MW. Stellium occupies a structurally unique position as the UK's only facility hosting secure cable landing stations for international subsea cables — Aqua Comms (transatlantic to the USA) and Altibox/NO-UK (to the Nordics and Mainland Europe) — and operates NCL-IX, the North of England's primary carrier-neutral internet exchange.

The company's core technology proposition centres on OCP Ready certification and the largest OCP immersion cooling deployment in Europe, supporting rack densities from 10kW to over 100kW (with bespoke designs up to 200kW per rack) for HPC, AI, and ML workloads. This is complemented by direct cloud on-ramps to AWS, Azure, Google Cloud, IBM Cloud and Oracle Cloud, a 40km metropolitan fibre network, and a curated partner ecosystem including Submer, Circle B, Zayo, Colt, ITPS, Aqua Comms, Schneider Electric and Forfusion. The platform is differentiated by the convergence of subsea cable access, renewable power density, immersion cooling, and a comprehensive certification stack (ISO 27001, 14001, 9001, 20000, 22301, BREEAM Excellent, Cyber Essentials+, PSN).

Stellium operates a subscription-based wholesale and enterprise colocation revenue model, charging metered power (energy represents roughly 70% of colocation cost) under multi-year contracts, with revenue streams spanning rack colocation, interconnection/cross-connects, cloud on-ramp services, powered-shell hyperscale builds, and remote-hands. Go-to-market is direct enterprise field sales targeting seven primary verticals — fintech and high-frequency trading, HPC/AI/ML, energy services, technology/internet/media, healthcare/pharma, public sector, and cloud providers — supplemented by event-driven demand generation (Submarine Networks EMEA, OCP open days, sector webinars). The company raised approximately $38.8M of growth equity in October 2019 from Eram Capital Advisors and Tiger Infrastructure Partners, and in 2025 was designated by the UK Government as a dedicated AI Growth Zone.

Name

Stellium Datacenters

Legal name

Stellium Datacenters Limited

Website

https://stelliumdc.com

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

11–50 employees

Short description

Stellium Datacenters operates a Tier 3+ carrier-neutral colocation campus in Newcastle, UK, uniquely hosting subsea cable landing stations and the NCL-IX internet exchange, serving enterprise, fintech, HPC/AI, energy and public sector tenants with OCP-ready, immersion-cooled, renewable-powered infrastructure.

Ownership category

akta.pro rank

Product category

Data Center Colocation

NAICS

Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (518210), Computer Facilities Management Services (541513)

SIC

Services-Computer Rental & Leasing (7377)

akta.pro primary industry

Retail Colocation (Multi-Tenant Data Centers) (HDABACAA)

Keywords

• Carrier-neutral colocation
• Subsea cable landing station
• Data center services
• High performance computing infrastructure
• Internet exchange services

Headquarters

HQ city

Wear

HQ country

United Kingdom

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Infrastructure, Technology or R&D, Personnel, Operations, Marketing or Sales

Revenue model

1. Colocation Services: Rental of rack space for customer servers and computing hardware in carrier-neutral facility. Services include Less Than 20 Racks and Greater Than 20 Racks options. Power contracts with metered billing for transparency. Mobilisation time for contracts up to 1.3MW in 4 weeks.
2. Interconnection Services: Cross-connect services, connectivity provider access, public cloud on-ramps, and internet exchange peering. Technical remote hands services.
3. Powered-Shell Data Centres: Custom build-to-suit data centre solutions for enterprise and hyperscale customers requiring dedicated infrastructure.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels7 records

Core offering

Stellium Datacenters owns and operates one of the UK's largest purpose-built Tier III+ carrier-neutral colocation data centres in Newcastle, providing rack space rental, subsea cable landing station services for transatlantic and Nordic connectivity, NCL-IX Internet Exchange peering, multi-cloud on-ramps (AWS, Azure, GCP, IBM, Oracle), and OCP Ready-certified high-density infrastructure for HPC, AI, and ML workloads.

Product overview

Stellium Datacenters operates a single, large-scale campus-based colocation platform (Stellium 1) in Newcastle, UK, which serves as both a Tier 3+ data centre and an international cable landing station. The core offering is OCP Ready™ colocation (core product), which is complemented by a modular suite of services including Cloud Ready multi-cloud on-ramps (AWS, Azure, Google Cloud, IBM Cloud, Oracle Cloud), Rack Ready rack-level packages, Interconnection Services with cross-connects and NCL-IX internet exchange, and a Global Subsea and National/Metro network connectivity layer. Additional infrastructure services cover immersion cooling solutions, technical remote hands, HPC & AI data centre services, and sustainability solutions including battery storage and solar. The platform's differentiation comes from its unique position as the UK's only data centre hosting cable landing stations for subsea cables from Aqua Comms (US) and Altibox/NO-UK (Nordics), combined with 80–180MW of REGO-certified renewable power and OCP Ready™ certification for AI and HPC workloads.

Differentiator

Problem solved

Functional benefit

Brands

• NCL-IX: Newcastle Internet Exchange, a neutral not-for-profit internet exchange point operated by Stellium, providing peering exchange services for the North of UK region.

Products and services

• OCP Ready Colocation
• Stellium 1 Data Centre Facility
• Cloud Ready
• Interconnection Services
• NCL-IX (Newcastle Internet Exchange)
• Global Subsea Network
• National Network
• Metro Network (Owned)
• Technical Remote Hands
• Immersion Cooling Solutions
• HPC & AI Data Centre Services

Quantifiable outcome

• 99.982% guaranteed availability SLA
• +6 more outcomes

Named customers3 records

Segments7 records

Ideal customer profiles6 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration6 records

AI capability1 record

Feature6 records

Partnerships

14 partnerships are on record, tiered core, supporting and major.

• ForfusioncoreStrategic or Co-development Partner · 3 February 2026Strategic partnership to deliver AI-optimised infrastructure and managed services to the North East AI Growth Zone at Cobalt Park. Combines Forfusion's IT architecture and cloud expertise with Stellium's high-density data centre platforms for AI, ML, and HPC workloads.
• Circle BcoreTechnology or Integration · 20 January 2025Collaboration with Submer and Stellium for OCP immersion cooling. Circle B provides immersion server components including Storage, Memory, and AMD CPUs for the proof of concept deployment.
• SubmercoreTechnology or Integration · 14 August 2023Strategic collaboration for OCP liquid cooling technology deployment. Submer's immersion cooling technology integrated into Stellium's OCP Ready certified infrastructure. Deployment represents largest OCP stack in Europe using Submer's SmartPod technology with ORv3 specification.
• Aqua CommscoreTechnology or Integration · 29 June 2023International subsea cable provider with AEC-2 and North Atlantic Loop systems landing at Stellium. Provides connectivity linking USA with Ireland, UK (Stellium), and Nordics.
• NYI (New York Internet)supportingTechnology or Integration · 29 June 2023Aqua Comms partnered with NYI to expand US interconnection capabilities at Long Island Interconnect and NYI-QTD (60 Hudson Street). Part of broader ecosystem connecting through Stellium.
• Colt Technology ServicesmajorGTM or Marketing Partner · 31 May 2023Colt's transatlantic backbone connects Stellium Newcastle directly with NJFX New Jersey over Aquacomms' Havfrue/AEC-2 cable. Provides diversified Atlantic crossing route alternative. Colt delivers on-net services up to 400Gb Optical Wave products.
• ITPScoreStrategic or Co-development Partner · 3 April 2023Strategic disaster recovery alliance. ITPS has PoP at Stellium 1 for failover capabilities. Partnership enables joint hosting solutions for 5G services and public sector clients including NHS, universities, and councils.
• TDCS (Total Data Centre Solutions)supportingTechnology or Integration · 3 April 2023End-to-end data centre consultancy that worked with Stellium on battery storage and solar solution implementation. EOS (Energy Optimisation Solutions) funded and implemented the 2.3MWh battery and 400kWp solar PV system.
• Schneider ElectriccoreTechnology or Integration · 8 March 2023Selected Galaxy VM UPS with lithium-ion batteries for power protection. 2N redundancy levels with 6MVA standby generators in N+1 configuration. Galaxy VM offers up to 99% energy efficiency via patented eConversion mode.
• LINX (London Internet Exchange)majorTechnology or Integration · 11 November 2021Partnership between LINX and NCL-IX (operated by Stellium). Provides networks at either location access to the other via trusted and redundant carrier through BSO transport.
• PlanNet21 UK / Agile NetworksmajorImplementation/ SI/ Consulting Partner · 24 March 2021£250,000 network expansion project delivering NCL-IX internet exchange. Agile Networks (Juniper partner) deployed Juniper MX universal routing platform for 10 and 100 Gigabit metro ethernet capabilities.
• Altibox CarriercoreTechnology or Integration · 22 March 2021Altibox owns and operates subsea fibre cables. NO-UK cable system (210 Tbit/s) connects Stavanger, Norway to Stellium Newcastle. NCL-IX launch enhances the NO-UK Cable Project connectivity.
• IX Reach (BSO Company)majorTechnology or Integration · 3 December 2020Partnership enables IX Reach customers to access connectivity and Layer 2 point-to-point services to 240+ locations globally, major Internet Exchanges, IP services and Cloud Service Providers via cross connect at Stellium.
• Zayo GroupcoreTechnology or Integration · 30 November 2020Zayo deployed full set of lit fibre services including IP into Stellium Newcastle. Stellium is Zayo's main IP node north of Manchester. Provides 10G and 100G diverse waves, 10G Ethernet and IP services. Key for 5G rollout connectivity.

Scale indicators14 records

Recent moves9 records

Expansion highlights6 records

Regional players

• Pulsant: UK regional colocation and cloud infrastructure provider with multiple UK sites, targeting enterprise and cloud workloads — comparable in scale and customer profile to Stellium's Newcastle footprint.
• Ark Data Centres: UK regional colocation operator focused on public sector and enterprise, similar to Stellium in scale and geographic focus within the UK domestic market.

Direct peers

• Vantage Data Centers: Hyperscale-focused data centre operator with European campuses. Competes for the same large-scale, renewable-powered, build-to-suit customer base that Stellium targets.
• Iron Mountain Data Centers: Global colocation provider serving enterprise and hyperscale customers with secure, compliant facilities. Comparable in offering carrier-neutral capacity and high-compliance certifications (HIPAA, ISO, FedRAMP).
• EdgeConneX: Specialist in hyperscale and edge colocation with sustainability focus and renewable-powered campuses across Europe. Comparable in delivering high-density, sustainable capacity for AI/HPC customers.
• CyrusOne: Global data centre operator (KKR/GIP) focused on hyperscale and enterprise colocation with significant European presence in London and Northern Europe. Directly comparable in serving AI/HPC and enterprise tenants.
• Digital Realty: Global hyperscale and interconnection data centre operator with a strong UK footprint (e.g., Crawley and Slough campuses). Competes for the same multi-tenant, carrier-neutral enterprise and hyperscale workloads.
• Equinix: Global leader in carrier-neutral colocation and interconnection, operating IBX data centres across Europe. Directly comparable in offering multi-tenant colocation, cross-connects and internet exchange peering at network-dense sites.
• Telehouse (KDDI): Operator of the iconic London Docklands carrier hotels (Telehouse North, East, North Two) — directly analogous as a carrier-dense colocation facility serving telecom, content and financial customers.

Broad incumbents

• NTT Global Data Centers: Operates one of the world's largest data centre footprints, including UK facilities. A broader incumbent offering retail, wholesale and hyperscale capacity overlapping with Stellium's enterprise and HPC/AI focus.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/stelliumdc
• YouTubeyoutube.com/channel/UCUU0jmGTsACYnAiG8iZMWCQ
• LinkedInlinkedin.com/company/stellium-datacenters-limited

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds1 record

Investors2 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Stellium Datacenters