Data centre and work units at Haslemere Heathrow Estate, Hounslow

What is proposed

The application seeks phased outline permission for a data centre, work units, access, parking, servicing areas, landscaping and associated works.

“P/2025/3669 Address: Haslemere Heathrow Estate, Silver Jubilee Way, TW4 6NF Ward: Cranford Proposal: Outline planning permission with all matters reserved except access. A demolition phase and phased redevelopment (each phase being an independent act of development) comprising data centre use (Use Class B8) of up to 50,000 sqm GEA, including ancillary offices, internal plant and equipment (including flues), and substation.”

“Drawing numbers: See Appendix 1 (Section 13) This application is presented to Planning Committee as a major development with a legal agreement 1.0 SUMMARY 1.1 The proposal will assist in meeting the urgent need for Data Centre capacity and the inclusion of work units on the site (including affordable workspace, subject to the S106) for small to medium size businesses represents an effective and policy compliant use of on a brownfield industrial employment site.”

Officer report

Planning history

The site has no recent relevant applications, while nearby industrial sites have received approvals for redevelopment and changes to existing permissions.

“The application site does not have any recent or relevant planning applications. However, the site immediately to the west (formerly British Airways Training Centre, Silver Jubilee Way, Hounslow, TW4 6JR) and the site to the south on the opposite side of the Great South-West Road (Segro Park Heathrow; formerly Vantage Logistics Centre, Ariel Way, Hounslow, TW2 6JW) have a number of relevant planning applications which are listed below.”

“00504/AE/P22 Variation of condition 2 (approved plans) to allow the creation of a mezzanine floor of planning permission 00504/AE/P21 approved 30/12/2018 for the re- development of the site comprising the construction of an industrial unit (B1(c)/B2/B8 uses) with ancillary officers, means of access, car and cycle parking facilities, drainage, landscaping, plant and ancillary works.”

Officer report

Consultation responses

One objection raised electricity, environmental and transport concerns, while the school supported the scheme and consultees requested conditions and contributions.

“January 2026. One objection as follows: Comments Response Infrastructure: Electricity capacity and usage concerns. The development’s regulated carbon emissions should be suitably mitigated and conditioned. The submitted Utilities Statement (ref: 3337-700930=STN-XX-XX-RP-Y-3002), dated 25 November 2025 states that a connection from the National Energy System Operator (NESO) has been offered for a new 80MVA electricity supply to power the proposed Data Centre.”

“Cranford Primary School Support On behalf of Cranford Primary School, we would like to formally express our support for the proposals relating to the Heathrow Estate. As a local primary school serving families within the Cranford and wider Hounslow community, we recognise the importance of sustainable development and investment that strengthens local infrastructure, improves community facilities, and supports long-term opportunities for residents.”

Officer report

Who spoke

The deputy area planning manager presented the report and answered questions about jobs, electricity, work units and district heating.

Members’ discussion

Members considered the scheme’s power and water demands, national infrastructure role, employment benefits, school support and proposed energy supplies.

“During the debate Cllr Katherine Dunne advised that she believed the Application to be sound, despite the issues associated with data centres being very high power and water consumers, because the centres were important national infrastructure. The site was currently industrial and the proposal included work units, allowing for additional jobs.”

Minutes

The vote

A motion to approve the officer recommendation was seconded and passed by a majority, with thirteen votes for, one against and no abstentions.

“Cllr Dunne moved approval of the officer’s recommendations seconded by Cllr Dan Bowring. Members voted to approve by a majority.”

“For – Thirteen votes Against – One vote Abstentions – Nil…”

Minutes

The decision

Planning permission was resolved to be granted for the phased data centre and work-unit development, subject to the approved parameters, design code and plans.

“Resolved – that planning application P/2025/3669, outline planning permission with all matters reserved except access. A demolition phase and phased redevelopment (each phase being an independent act of development) comprising data centre use (Use Class B8) of up to 50,000 sqm GEA, including ancillary offices, internal plant and equipment (including flues), and substation.”

Minutes