United Kingdom data-centre suppliers

Coverage is published evidence—not delivery assurance

Counts come from the current directory taxonomy and supplier-published market coverage. They do not prove a local legal entity, licence, workforce, stock, factory allocation, project capacity, qualification or availability.

Capability paths

Browse UK suppliers by category

Category 01 · 16 records

Grid Connections & High Voltage

Connection strategy, ICP delivery, substations, contestable works and high-voltage infrastructure.

Category 02 · 19 records

Transformers & Switchgear

Transformers, protection, switchgear, power distribution and associated commissioning.

Category 03 · 17 records

UPS, Generators & Critical Power

UPS systems, batteries, standby generation, temporary power, testing and maintenance.

Category 04 · 17 records

Cooling, Liquid Cooling & Water

Chillers, precision cooling, CDUs, heat rejection, water systems and thermal controls.

Category 05 · 22 records

Design, Build & Commissioning

MEP design, specialist construction, offsite delivery, testing and integrated systems commissioning.

Category 06 · 17 records

Fibre & Connectivity

Dark fibre, carrier networks, diverse routes, campus connectivity and network infrastructure.

Category 07 · 16 records

Energy Storage & Flexibility

Battery storage, demand flexibility, microgrids, optimisation and grid-support services.

Category 08 · 18 records

Physical Security & Fire

Access control, detection, suppression, perimeter security and life-safety systems.

Category 09 · 16 records

Operations & Maintenance

Hard FM, planned and reactive maintenance, controls, monitoring and critical environment support.

Category 10 · 22 records

Planning, Engineering & Advisory

Site selection, planning, cost, programme, sustainability, engineering and commercial advice.

Category 11 · 20 records

Decommissioning & Circular IT

IT asset disposition, secure erasure, reuse, recycling and critical facility decommissioning.

Category 12 · 16 records

Talent & Recruitment

Technical recruitment, project teams, operations hiring and specialist workforce support.

Project lifecycle

Browse UK suppliers by stage

Stage A · 61 records

Site & Plan

Select sites, test feasibility, establish power strategy and navigate planning.

Stage B · 33 records

Connect & Power

Secure capacity and deliver the resilient electrical infrastructure.

Stage C · 137 records

Design & Build

Coordinate and construct the critical shell, plant and technical systems.

Stage D · 98 records

Fit Out & Commission

Install, integrate, test and prove systems before live operation.

Stage E · 112 records

Operate & Maintain

Protect uptime through monitoring, maintenance and disciplined operations.

Stage F · 46 records

Upgrade & Exit

Retrofit capacity, improve efficiency and responsibly retire assets.

Official context

Use each source for the question it supports

UK Government — Data centres

The June 2026 factsheet describes the proposed data-centre security and resilience framework and makes clear that implementation depends on legislation and later technical detail.

Ofgem — Data-centre connection queue reform

Ofgem's July 2026 update describes proposed commitment and progress measures for large data-centre demand connections; a queue position is not an energisation claim.

Companies House — Searching the register

The register supports company identity and status checks but warns that its records are not a complete basis for a procurement decision.

NCSC — 12 principles of supply chain security

NCSC organizes supplier assurance around understanding risk, establishing control, checking arrangements and continuous improvement.

Sources checked 2 October 2026. Confirm the current national, state, local, devolved, regulatory and contractual route for the actual project.