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Colt London 6, 7 and 8 Data Centres

Hayes, England, United KingdomPreconstruction
Evidence
Planned critical IT
98 MW
Updated
Oct 28, 2026

Colt London 6, 7 and 8 are three future Hayes facilities intended to add 97 MW. Construction and first-service dates are forward-looking, and neither the older 98 MW figure nor the wider 160 MW campus figure is presented as operating IT. Tenant utilization, contract pricing and undisclosed project financing remain outside the verified public record.

Capacity

Reported capacity

Design

98 MW

Source

Reported capacity

Planned / design or future potential

97 MW

Source

Operating IT capacity: Not established in published records

A missing figure does not mean zero. Planned, utility and generation figures are not operating IT capacity.

Development

Development, permitting and phased deliveryAnnounced or preconstruction

Colt London 6, 7 and 8 are three future Hayes facilities intended to add 97 MW. Construction and first-service dates are forward-looking, and neither the older 98 MW figure nor the wider 160 MW campus figure is presented as operating IT. Tenant utilization, contract pricing and undisclosed project financing remain outside the verified public record.

Milestones (2)
Three-building Hayes expansion announced

Jun 5, 2025 · Recorded actual event

Completed · Announced

Source not linked
First service targeted

2029 · Forecast / planned record

Forecast · Forecast completion

Source not linked

Participants

Colt Data Centre Services

Developer

Sources by role
Developer (1)

Site & development

Location context

Actual

Colt London 6 7 8 | Hayes | England | GB

Source

Location context

Actual

Colt London 6 7 8 | Hayes | England | GB

Source

Project location

Actual

Hayes, England, GB

Source

Construction start target

Forecast

Mid-2026

Source

Additional project facts

Lifecycle status

Actual

Preconstruction

Source

Capacity basis

Actual

Colt Data Centre Services publishes 98 MW of IT power for this project boundary.

Source

Lifecycle status

Actual

Preconstruction

Source

Capacity basis

Actual

97 MW is the current published addition for three future Hayes buildings, not operating capacity.

Source

Operator confirmed

Actual

Colt Data Centre Services

Source

Current lifecycle

Actual

Under development

Source

Capacity classification

Actual

Future potential

Source

Capacity basis

Actual

97 MW is the current published addition for three future Hayes buildings, not operating capacity.

Source

Customer utilization

Actual

Not publicly disclosed

Source

Identity boundary

Actual

This facility or named campus is tracked separately from adjacent buildings and broader operator portfolios

Source

Source refresh date

Actual

2026-08-29

Source

First service target

Forecast

Early 2029

Source

Infrastructure & permits

Technical details (3)
Electric grid

Planned or represented

97 MW

97 MW is the current published addition for three future Hayes buildings, not operating capacity.

Fiber

Planned or represented

Carrier-neutral or resilient fibre connectivity is described for the individual facility.

Cooling system

Planned or represented

Cooling architecture supports the stated lifecycle; actual tenant draw and instantaneous load remain undisclosed.

Building · Issued

Colt London 6, 7 and 8

London Borough of Hillingdon

Jun 5, 2025

Sources (1)

Public-source research. Plans may change. See Evidence for sources and qualifications.

Related projects (4)
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Same locality: Hayes · Shared participant: Colt Data Centre Services

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Preconstruction · Hayes, England, United Kingdom

Same locality: Hayes · Shared participant: Colt Data Centre Services

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CyrusOne LON2 Heathrow Data Center

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