Green Mountain LON-East data centre campus (Romford North Data Centre), King George Close, Romford (Havering)

Name: Green Mountain LON-East data centre campus (Romford North Data Centre), King George Close, Romford (Havering)
Address: GB

Completed

United Kingdom · 1 project · Last reported 2026-09-01

Summary

Green Mountain's release dated 1 September 2026 announces a customer agreement for 14 MW at its LON-East campus in Romford, East London, under which a neocloud operator will occupy 'the recently delivered 14 MW of AI-ready capacity'. This dated operator disclosure supports completed status, as of 1 September 2026, for the 14 MW expansion: in Green Mountain's December 2023 description, six data halls built in two 7 MW phases inside the existing building. Completion keeps that scope. The customer's occupation is future, so operation of the new capacity is not asserted, and the campus's 37 MW planned total, its legacy 7 MW operation and the planned further building across King George Close are outside this project. evidence

Green Mountain (Green Mountain AS / Green Mountain DC UK Limited) · published 2026-09-01

Location

The interactive map needs JavaScript. Display anchor: 51.58702, 0.16767 (Point locator, WGS 84).

View location: OpenStreetMap · Google Maps · Bing aerial · Copernicus Browser

Campus reference; individual project footprints are not mapped.

Projects (1)

Green Mountain LON-East (Romford) - 14 MW AI-ready data-hall expansion inside the existing building (delivered)

Completed last observed as of 2026-09-01 · Authoritative status update

The Environment Agency's general compliance visit to 'Romford North Data Centre' (permit FP3630EU, operator and permit holder Green Mountain DC UK Limited) on 29 April 2026 recorded no breaches. It notes the permit variation EPR/FP3630EU/V002 (received 19 February 2026) for 'Phase VI' with eight new emergency generators with SCR abatement, whose integrated commissioning was at its final stage and not yet handed over to the operator; water and cooling plant for 'the new data halls'; some expansion construction in the back yard; and a planned future 'LON2' expansion with four data halls and twelve engines across King George Close, where a substation is already in place and for which no permit application had yet been made. evidence

Environment Agency · published 2026-05-07

Green Mountain announced on 8 June 2026 that it had acquired the freehold of its 8-acre data-centre campus in Romford, East London, 'also known as LON-East'. It states that 7 MW has been operational on the site since 2010, that an additional 14 MW 'has been delivered recently', that the campus has a planned total of 37 MW, and that Green Mountain will continue to operate the existing data centre while unlocking the remaining capacity. evidence

Green Mountain (Green Mountain AS / Green Mountain DC UK Limited) · published 2026-06-08

Green Mountain announced in December 2023 that a new 14 MW expansion was under construction at its LON-East campus in Romford, built in two 7 MW phases inside the existing building with over 5,500 sq m of white space (three data halls supporting 7 MW of IT load per phase), after it incorporated Infinity Data Centres into its portfolio in January 2023 and renamed the site LON-East; an additional 16 MW build-to-suit opportunity on an adjacent plot had power and planning permission. evidence

Green Mountain (Green Mountain AS) · published 2023-12-08

The Datahub record of Havering full permission P1238.23 (validated 11 August 2023, approved under delegated powers 6 October 2023) at 3 King George Close, Romford RM7 7PN, for the 'Erection of external fin wall to the front of the existing data storage facility', with a 3.47 ha site polygon and centroid 51.5871651, 0.1678894. evidence

Greater London Authority (London Planning Datahub; records supplied by the London Borough of Havering) · publication date not stated

The Datahub records section 73 application P1029.26 at 5 King George Close, Romford RM7 7PS, validated 28 August 2026 and 'Application Under Consideration' (decision target 27 November 2026), to vary conditions 1, 3, 4, 9, 13 and 14 of permission P0614.20 (14 January 2021), itself a variation of P1137.11 (2012) for a 'New data storage development consisting of new data storage warehouse and new emergency energy centre building'. Its centroid (51.586246, 0.169782) lies about 160 m south-east of the existing facility. evidence

Greater London Authority (London Planning Datahub; records supplied by the London Borough of Havering) · publication date not stated

Green Mountain's LON-East page describes a data centre in Romford, East London, with space in an existing 11,000 m2 building (build year 2009, designed and built to Tier III specifications, dedicated on-site substation, 8.6-acre land footprint) and a planned building of 5,760 m2 (eight 2 MW data halls on 4 acres), 37 MW of secured power capacity, HVO-fuelled automatic standby generators and ISO 9001, 20000, 27001, 45001 and 14001 certification. evidence

Green Mountain (Green Mountain AS) · publication date not stated

Companies

Owner: Green Mountain DC UK Limited (current) evidence
Operator: Green Mountain DC UK Limited (current) evidence

Source and location review

Status source

Green Mountain: 'Green Mountain Global Signs Contract with Major Neocloud Operator at LON-East Campus' (press release, 1 September 2026) evidence row
Green Mountain (Green Mountain AS / Green Mountain DC UK Limited) · published 2026-09-01 · Company disclosure

Locator

Campus locator · Official source · environmental_permit_register_site_location evidence

Source checks

Not reviewed against imagery not_reviewed
No imagery review is recorded for this project. Its status rests only on the dated authoritative source. · no independent imagery verification

Status age at review: 56 days before the data update on 2026-10-27

Location details

Coordinates: 51.58702, 0.16767
Geometry licence: Open Government Licence v3.0 (Environment Agency conditional licence as stated in the register metadata)
Use scope: Campus locator
Scope class: environmental_permit_register_site_location
Authority: Official source
Source entity: Campus
Method: environment_agency_public_register_published_site_latitude_longitude_for_permit_EPR_FP3630EU
Derivation: direct_geometry
Precision scope: Site location published by the Environment Agency's installations register for permit EPR/FP3630EU (holder Green Mountain DC UK Limited, 'Romford North Data Centre, Unit 3 King George close, Romford, RM7 7PN'): grid reference TQ5027089800, latitude 51.587017, longitude 0.167675, copied without transformation. It lies inside Havering's 3.47 ha planning polygon for the existing data storage facility at 3 King George Close and locates the campus's existing building; it is not a building outline or surveyed position.
Horizontal uncertainty: Not reported
The register publishes no positional accuracy; the point lies inside the 3.47 ha existing-facility planning polygon, and the 14 MW data halls occupy part of the existing building around it, not a separately located structure.
Geometry evidence: bedfc130

A locator places the site on the map. It is not a building footprint, a construction extent or a surveyed boundary unless the use scope is an official boundary, and even then it is a parcel or permit boundary.

Evidence

Sources are linked, not redistributed; each keeps its own terms. An archived copy is a lookup for the Wayback Machine capture nearest the retrieval date and may be unavailable or differ from what was reviewed. Each hash states what it covers; imported factual records are not publisher-page captures.

Evidence for Green Mountain LON-East data centre campus (Romford North Data Centre), King George Close, Romford (Havering)
Title	Publisher	Roles	Published	Retrieved	Licence	Attribution	Content hash (SHA-256)
Environment Agency Compliance Assessment Report FP3630EU/0598676: site inspection at Romford North Data Centre (Green Mountain DC UK Limited), 29 April 2026, issued 7 May 2026 Archived copy	Environment Agency Government record	Site and project identity	2026-05-07	2026-10-27	Open Government Licence v3.0 (Environment Agency public register document)	Environment Agency	`08ca923230ade98b543af9d9ee92021e0832863a34873f00c706700453893677` Retained source material; see source provenance
Environment Agency public register (Environmental Permitting Regulations - Installations for England): registration EPR/FP3630EU, Green Mountain DC UK Limited, Romford North Data Centre, Unit 3 King George Close, Romford RM7 7PN Archived copy	Environment Agency Government record	Geometry, Operator claim	not stated	2026-10-27	Open Government Licence v3.0 (Environment Agency conditional licence as stated in the register metadata)	Environment Agency	`ae3656b317dacea52004c97086f663c9b31b5e201efdc9c7a73a932048ec5151` Retained source material; see source provenance
Green Mountain: 'Green Mountain breaks ground on new data centre expansion in London' (8 December 2023) Archived copy	Green Mountain (Green Mountain AS) Company disclosure	Site and project identity	2023-12-08	2026-10-27	all-rights-reserved (operator website)	Green Mountain	`6ecaf7080721075b9c433c9e02ac99df462bcbfc30f74c261969b40ef70b71f7` Retained source material; see source provenance
Green Mountain: 'Green Mountain Global Signs Contract with Major Neocloud Operator at LON-East Campus' (press release, 1 September 2026) Archived copy	Green Mountain (Green Mountain AS / Green Mountain DC UK Limited) Company disclosure	Physical status, Owner claim	2026-09-01	2026-10-27	all-rights-reserved (operator press release)	Green Mountain	`616a5b818f60be20ac071d875eb423453aeea05b3bdabf0c63ef277c90af141a` Retained source material; see source provenance
Green Mountain: 'Green Mountain UK acquires freehold of Romford data center campus' (8 June 2026) Archived copy	Green Mountain (Green Mountain AS / Green Mountain DC UK Limited) Company disclosure	Site and project identity	2026-06-08	2026-10-27	all-rights-reserved (operator website)	Green Mountain	`57fa80414a9251596a9963a43fdfd5b100a1b8f5f41a948280581e92bd841205` Retained source material; see source provenance
Green Mountain: LON-East data center location page Archived copy	Green Mountain (Green Mountain AS) Operator website	Site and project identity	not stated	2026-10-27	all-rights-reserved (operator website)	Green Mountain	`4409dd0f6d0fe24a8a994083e02b2e5701dc211e968f8fd96b8c5b3f70fceb0d` Retained source material; see source provenance
London Planning Datahub (Greater London Authority): Havering application P1029.26, variation of conditions of P0614.20 (new data storage warehouse and emergency energy centre), 5 King George Close, Romford RM7 7PS Archived copy	Greater London Authority (London Planning Datahub; records supplied by the London Borough of Havering) Government record	Site and project identity	not stated	2026-10-27	not stated by the API (London Planning Datahub public data)	Greater London Authority, London Planning Datahub; London Borough of Havering	`e0be72c770d605d10b153501c4cee74af5f93c36ab435d909b09941dab5d4999` Retained source material; see source provenance
London Planning Datahub (Greater London Authority): Havering planning permission P1238.23, external fin wall to the front of the existing data storage facility, 3 King George Close, Romford RM7 7PN Archived copy	Greater London Authority (London Planning Datahub; records supplied by the London Borough of Havering) Government record	Site and project identity	not stated	2026-10-27	not stated by the API (London Planning Datahub public data)	Greater London Authority, London Planning Datahub; London Borough of Havering	`a0e0598929cd4105798f2331da954eb8ff70e59c0429e991dd7a5daaf2848415` Retained source material; see source provenance

Cite this site

Kyars, K. (2026). Green Mountain LON-East data centre campus (Romford North Data Centre), King George Close, Romford (Havering) [site vcc-site-bcb0361cec82a4bf1063]. In Data Center Atlas (2026-10-27) [Data set]. https://kiankyars.github.io/datacenter-atlas/sites/vcc-site-bcb0361cec82a4bf1063/

Show on the map explorer JSON for this site GeoJSON for this site Download dataset Report a correction