What Stellanor Datacenters does

Stellanor Datacenters is a UK-focused urban colocation platform that provides secure rack space, redundant power, advanced cooling, carrier-neutral connectivity, and 24/7 operational support across eleven data center facilities in London (City, East, North, West), Reading, Cambridge, Woking, Gatwick, Byfleet, Hemel Hempstead, and West Yorkshire. The company was launched in September 2025 by German investment firm DWS Group as an asset-gathering vehicle, scaling from two initial Colt-acquired London sites to eleven facilities in nine months through the £122.9 million acquisition of eight Redcentric sites and a sale-and-service-back deal with Imagination Technologies. Its technical platform spans approximately 39 MVA of secured grid capacity, with high-density configurations up to 100 kW per rack, multiple cooling modalities (chilled water, DX, free air, liquid, immersion, RDHx), 100% renewable energy, and a stated CO2 neutral by 2030 target supported by renewable hydrogen emergency power systems.

Stellanor sells colocation as a fixed monthly subscription with quote-based custom pricing, supplemented by recurring connectivity services (leveraging a 40+ carrier ecosystem including Lumen, Colt, BT, Vodafone, Verizon, Zayo, and Linx), professional services for IT migration, and add-on modules including Remote Hands technical support, the myStellanor self-service portal, and the CIMS energy monitoring portal. Primary customer segments are IT and managed cloud service providers, financial services firms requiring low-latency urban connectivity, government and public institutions with sovereignty and compliance needs, and AI/HPC workloads requiring high-density power and advanced cooling. Approximately 550 enterprise customers were inherited through acquisitions, with named relationships including Imagination Technologies (GPU and AI chip design under a long-term sale-and-service-back) and Redcentric (continuing as a managed services provider).

The company is private, backed by DWS Group's European Infrastructure Private Equity fund (which previously built NorthC Datacenters and MediTerra), and led by a senior team drawn from Equinix, TelecityGroup, Keppel DC REIT, Telehouse Europe, Pure Data Centres, and Digital Realty. Chairman Michael Tobin CBE previously led TelecityGroup from a £6 million to a £2.5 billion market capitalization prior to its sale to Equinix. Stellanor's stated expansion intent covers the UK, Ireland, and the Nordics, positioning it as a Northern European urban and AI-ready colocation platform rather than a single-country operator.

Name

Stellanor Datacenters

Legal name

Theo Colocation Services UK Limited

Website

https://stellanordatacenters.com

Company type

Private

Founded year

2025

Operating status

Operating

Headcount range

11–50 employees

Short description

Stellanor Datacenters is a DWS-backed UK urban colocation platform operating eleven data centers across London and regional cities, serving approximately 550 enterprise customers in financial services, government, IT managed services, and AI/HPC workloads with high-density power and renewable energy.

Ownership category

akta.pro rank

Product category

Data Center Colocation

NAICS

Computer Facilities Management Services (541513), Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (5182), Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (51821)

SIC

Communications Services, Nec (4899), Services-Computer Programming, Data Processing, Etc. (7370), Services-Facilities Support Management Services (8744)

akta.pro primary industry

Edge Colocation & Micro Data Centers (HDABACAI)

akta.pro secondary industries

Data Center Operations & Managed Services (Remote Hands, NOC/SOC) (HDABANAA), Carrier-Neutral Interconnect & Meet-Me Room (MMR) Services (HDABALAD), Modular & Prefabricated Data Centers (HDABACAH)

Keywords

• Colocation services
• Data center infrastructure
• Carrier-neutral connectivity
• AI-ready colocation
• Data migration services

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices12 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Colocation Services: Secure, reliable colocation services providing rack space, redundant power supply, cooling, security, fire safety, and connectivity. Revenue generated from monthly rental of rack space, cages, private suites, and data halls. Fixed monthly fees with scalability options.
2. Connectivity Services: Carrier-neutral connectivity services providing access to internet exchanges, ISP hosting, IP transit, and fiber carriers. Revenue from connectivity provider partnerships and direct customer connectivity services.
3. Migration Services: Expert support for IT environment migration to Stellanor data centers, including pre-migration planning, coordination, and post-migration validation.
4. Remote Hands Services: Remote technical support services for routine tasks like hardware swaps, cable installations, and system reboots, scheduled via the myStellanor portal.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

Stellanor Datacenters provides secure, reliable colocation services across 11 urban and regional UK data center facilities, offering rack space, redundant power supply, advanced cooling, security, and fire safety. The core offering is complemented by carrier-neutral connectivity services providing access to 40+ carriers and internet exchanges, expert IT migration services for transitioning customer environments, and AI-ready infrastructure with high-density power capabilities up to 100kW per rack at the London West facility.

Product overview

Stellanor Datacenters operates as a unified platform offering urban and regional colocation services across 11 UK data center facilities. The core offering consists of Colocation Services for secure server hosting, complemented by Connectivity Services providing carrier-neutral access to over 40 connectivity providers. Supporting modules include myStellanor Portal for self-service management, Remote Hands for off-site technical support, CIMS Portal for energy monitoring, and dedicated Customer Success and Site Manager support. The platform delivers AI-ready infrastructure with high-density power capabilities (up to 100kW per rack), advanced cooling systems (liquid and immersion cooling), supporting AI inference, machine learning, and real-time analytics workloads. Migration Services provide end-to-end transition support. Stellanor was launched in September 2025 with two Colt facilities and has rapidly expanded to 11 sites through acquisitions.

Differentiator

Problem solved

Functional benefit

Brands

• myStellanor: Self-service portal for customers to manage requests and orders
• CIMS Portal
• Remote Hands

Products and services

• Colocation Services Secure, reliable colocation services in urban and regional data centers offering rack space, redundant power supply, cooling, security, fire safety, and connectivity with 24x7 engineering and technical support. Most facilities designed to Tier 3+ standards with fully redundant critical infrastructure. Scalable from single racks to private suites and full data halls.
• Connectivity Services Carrier-neutral connectivity services providing access to a wide ecosystem of connectivity providers including internet exchanges (Linx), ISP hosting, IP transit, and fibre carriers (Lumen, Colt, BT, Vodafone, Verizon, AT&T, and others). Enables customers to choose providers without vendor lock-in, with cloud provider access to AWS and Microsoft Azure from London City.
• Migration Services Expert support for migrating IT infrastructure from on-premises to Stellanor's data centers, including pre-migration planning, coordination during migration, and post-migration testing and monitoring. Supports hybrid cloud implementation for flexibility and security with business continuity throughout.
• AI-Ready Infrastructure High-density colocation capabilities including power up to 100kW per rack at London West, advanced cooling systems (liquid cooling, immersion cooling, RDHx), and enhanced fiber interconnection supporting AI inference, machine learning, real-time analytics, and HPC workloads.

Quantifiable outcome

• Zero service disruption during AI infrastructure upgrades
• +2 more outcomes

Named customers3 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration45 records

AI capability4 records

Feature5 records

Partnerships

Four partnerships are on record, tiered core and minor.

• Imagination TechnologiescoreTechnology or Integration · 8 April 2026Stellanor acquired a purpose-built data center in Hemel Hempstead from Imagination Technologies under a sale-and-service-back arrangement. Imagination continues operating from the facility as a fully managed Stellanor client, using it for GPU and AI chip design workloads.
• RedcentriccoreStrategic or Co-development Partner · 1 October 2025Stellanor acquired eight data center sites from Redcentric plc for £122.9m, serving approximately 450 enterprise customers. Sites span London, Reading, Cambridge, Woking, Gatwick, Byfleet, and West Yorkshire. Redcentric continues as a managed services provider relationship.
• Colt Technology ServicescoreTechnology or Integration · 1 September 2025Stellanor acquired two London data centers from Colt Technology Services in September 2025, currently serving over 100 clients. This marked Stellanor's launch and first acquisition.
• ARC:MC ArchitectureminorImplementation/ SI/ Consulting PartnerARC:MC served as the lead architect for the Goswell Road data center transformation, implementing human-centric design principles. Michael Baggs led the design project as Senior Associate.

Scale indicators6 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• Digital Realty Trust: Hyperscale and enterprise colocation operator with multiple UK data centers. Comparable as a direct competitor in the wholesale/AI colocation segment, especially around high-density rack capability.
• Telehouse Europe (KDDI): London-based colocation operator (Docklands) with strong carrier-neutral interconnection. Closely comparable given shared London urban positioning and overlapping enterprise/financial-services customer base.
• NTT Data (Global Data Centers): Operates multiple UK and European colocation facilities. Comparable as a global colocation competitor with high-density, AI-ready capacity and enterprise-grade services.
• Equinix: Global colocation and interconnection leader with a substantial UK presence. Directly comparable as an enterprise/wholesale colocation operator offering carrier-neutral connectivity and AI-ready density at scale.
• NorthC Datacenters: Dutch regional colocation platform also backed by DWS infrastructure capital. Closely comparable as a DWS-funded European regional colocation roll-up with similar geographic-aggregation strategy.
• Iron Mountain Data Centers: Enterprise and wholesale colocation operator with significant UK and European presence. Comparable as a competitor targeting regulated and security-sensitive enterprise workloads.
• CyrusOne: Hyperscale and enterprise colocation provider with European footprint. Comparable as a competitor pursuing AI/HPC workloads via high-density power and liquid cooling.
• Colt Data Centre Services: London-headquartered colocation operator from which Stellanor acquired its first two sites. Directly comparable in urban London focus, enterprise customer base, and carrier-neutral positioning.

Broad incumbents

• Vantage Data Centers: Global hyperscale data center operator with growing European footprint. Comparable as a competitor in the AI/HPC high-density segment, though predominantly hyperscale-anchored rather than enterprise-focused.

Emerging players

• Redcentric plc: UK managed services and colocation provider that sold 8 of its data center sites to Stellanor for £122.9m. Comparable as a former UK regional colocation operator with overlapping enterprise and public-sector customer relationships.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/stellanordatacentres

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Funding overview

Funding rounds

Investors

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 Stellanor Datacenters