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Cartis diligence evidence schedule

CyrusOne LON6 Iver Heath

PRJ-0038 · Site · Dromenagh Farm / Sevenhills Road, Iver Heath, Buckinghamshire, United Kingdom

Record last updated Oct 28, 2026

Scope and capacity

CyrusOne's current LON6 operator page, checked October 28, 2026, advertises 108 MW of planned IT capacity and still describes the Iver Heath campus as in development. This differs from the 90 MW IT design in the June 13, 2025 announcement; it is not confirmation of commissioned capacity or a newly granted planning permission. The original permitted design comprised six structures and ten data halls. The planned Q3 2026 groundbreaking was not confirmed in this review.

Headline: 90 MW Planned critical IT

Numbers refer to their stated physical boundaries and are not added together. Source dates, claim dates and record updates have different meanings. Missing dates and locators are not inferred.

Project status · Full planning permission; preconstruction

Permitted · CyrusOne LON6 Iver Heath (Project)

Claim 5269 · Recorded claim type: Permitted · Review: Approved · Claim date: Jun 17, 2025

  1. CyrusOne gets approval for £1.2 billion data centre in Buckinghamshire

    Montagu Evans · Document date: Jun 30, 2025 · Corroborating

    Source reference: SRC-0295 · Company announcement · Recorded authority: Party primary

    Source URL

    https://www.linkedin.com/posts/montagu-evans_go-ahead-for-our-client-leading-global-centre-activity-7346853175326326784-DqOW

  2. 60,000sqm data centre approved for Iver Heath

    Henley Standard · Document date: Jun 17, 2025 · Primary

    Source reference: SRC-0293 · News report · Recorded authority: Secondary

    Source URL

    https://www.henleystandard.co.uk/news/planning/201771/60-000sqm-data-centre-approved-for-iver-heath.html

Target IT capacity · 90 MW

Planned / design or future potential · CyrusOne LON6 Iver Heath (Project)

Claim 5270 · Recorded claim type: Forecast · Review: Approved · Claim date: Jun 13, 2025

Headline treatment: Selected headline

  1. CyrusOne Plans Pioneering New London Facility with Sustainability At Its Core

    CyrusOne · Document date: Jun 13, 2025 · Corroborating

    Source reference: SRC-0291 · Company announcement · Recorded authority: Party primary

    Source URL

    https://www.cyrusone.com/resources/press-releases/cyrusone-plans-pioneering-new-london-facility-with-sustainability-at-its-core

  2. CyrusOne announces plans for 90MW data center campus in Buckinghamshire, UK

    Data Center Dynamics · Document date: Jun 13, 2025 · Corroborating

    Source reference: SRC-0294 · News report · Recorded authority: Secondary

    Source URL

    https://www.datacenterdynamics.com/en/news/cyrusone-announces-plans-for-90mw-data-center-campus-in-buckinghamshire-uk/

  3. Data Center — London, UK: LON6

    CyrusOne · Document date: Not stated · Primary

    Source reference: SRC-0290 · Fact sheet · Recorded authority: Party primary

    Source URL

    https://www.cyrusone.com/data-centers/emea/london-uk-lon6

Technical IT space · 30,000 sqm

Forecast · CyrusOne LON6 Iver Heath (Project)

Claim 5271 · Recorded claim type: Forecast · Review: Approved · Claim date: Jun 13, 2025

  1. CyrusOne Plans Pioneering New London Facility with Sustainability At Its Core

    CyrusOne · Document date: Jun 13, 2025 · Corroborating

    Source reference: SRC-0291 · Company announcement · Recorded authority: Party primary

    Source URL

    https://www.cyrusone.com/resources/press-releases/cyrusone-plans-pioneering-new-london-facility-with-sustainability-at-its-core

  2. Data Center — London, UK: LON6

    CyrusOne · Document date: Not stated · Primary

    Source reference: SRC-0290 · Fact sheet · Recorded authority: Party primary

    Source URL

    https://www.cyrusone.com/data-centers/emea/london-uk-lon6

Data hall count · 10 count

Design · CyrusOne LON6 Iver Heath (Project)

Claim 5272 · Recorded claim type: Design · Review: Approved · Claim date: Not stated

  1. Data Center — London, UK: LON6

    CyrusOne · Document date: Not stated · Primary

    Source reference: SRC-0290 · Fact sheet · Recorded authority: Party primary

    Source URL

    https://www.cyrusone.com/data-centers/emea/london-uk-lon6

Physical data center structures · 6 count

Design · Permitted LON6 full campus (Phase)

Claim 5273 · Recorded claim type: Design · Review: Approved · Claim date: Jun 13, 2025

  1. 60,000sqm data centre approved for Iver Heath

    Henley Standard · Document date: Jun 17, 2025 · Corroborating

    Source reference: SRC-0293 · News report · Recorded authority: Secondary

    Source URL

    https://www.henleystandard.co.uk/news/planning/201771/60-000sqm-data-centre-approved-for-iver-heath.html

  2. CyrusOne Plans Pioneering New London Facility with Sustainability At Its Core

    CyrusOne · Document date: Jun 13, 2025 · Primary

    Source reference: SRC-0291 · Company announcement · Recorded authority: Party primary

    Source URL

    https://www.cyrusone.com/resources/press-releases/cyrusone-plans-pioneering-new-london-facility-with-sustainability-at-its-core

  3. CyrusOne announces plans for 90MW data center campus in Buckinghamshire, UK

    Data Center Dynamics · Document date: Jun 13, 2025 · Corroborating

    Source reference: SRC-0294 · News report · Recorded authority: Secondary

    Source URL

    https://www.datacenterdynamics.com/en/news/cyrusone-announces-plans-for-90mw-data-center-campus-in-buckinghamshire-uk/

Utility supply design · 160 MVA

Design · CyrusOne LON6 Iver Heath (Project)

Claim 5274 · Recorded claim type: Design · Review: Approved · Claim date: Not stated

  1. Data Center — London, UK: LON6

    CyrusOne · Document date: Not stated · Primary

    Source reference: SRC-0290 · Fact sheet · Recorded authority: Party primary

    Source URL

    https://www.cyrusone.com/data-centers/emea/london-uk-lon6

Grid feed voltage · 132 kV

Actual · CyrusOne LON6 Iver Heath (Project)

Claim 5275 · Recorded claim type: Actual · Review: Approved · Claim date: Not stated

  1. Data Center — London, UK: LON6

    CyrusOne · Document date: Not stated · Primary

    Source reference: SRC-0290 · Fact sheet · Recorded authority: Party primary

    Source URL

    https://www.cyrusone.com/data-centers/emea/london-uk-lon6

Planning permission · Full planning permission in place; conditions/phasing details remain

Permitted · Permitted LON6 full campus (Phase)

Claim 5276 · Recorded claim type: Permitted · Review: Approved · Claim date: Jun 30, 2025

  1. CyrusOne gets approval for £1.2 billion data centre in Buckinghamshire

    Montagu Evans · Document date: Jun 30, 2025 · Corroborating

    Source reference: SRC-0295 · Company announcement · Recorded authority: Party primary

    Source URL

    https://www.linkedin.com/posts/montagu-evans_go-ahead-for-our-client-leading-global-centre-activity-7346853175326326784-DqOW

  2. 60,000sqm data centre approved for Iver Heath

    Henley Standard · Document date: Jun 17, 2025 · Primary

    Source reference: SRC-0293 · News report · Recorded authority: Secondary

    Source URL

    https://www.henleystandard.co.uk/news/planning/201771/60-000sqm-data-centre-approved-for-iver-heath.html

Planned investment · £>1200000000

Transaction scope · CyrusOne LON6 Iver Heath (Project)

Claim 5277 · Recorded claim type: Transaction scope · Review: Approved · Claim date: Jun 13, 2025

  1. CyrusOne gets approval for £1.2 billion data centre in Buckinghamshire

    Montagu Evans · Document date: Jun 30, 2025 · Corroborating

    Source reference: SRC-0295 · Company announcement · Recorded authority: Party primary

    Source URL

    https://www.linkedin.com/posts/montagu-evans_go-ahead-for-our-client-leading-global-centre-activity-7346853175326326784-DqOW

  2. CyrusOne Plans Pioneering New London Facility with Sustainability At Its Core

    CyrusOne · Document date: Jun 13, 2025 · Primary

    Source reference: SRC-0291 · Company announcement · Recorded authority: Party primary

    Source URL

    https://www.cyrusone.com/resources/press-releases/cyrusone-plans-pioneering-new-london-facility-with-sustainability-at-its-core

Biodiversity net gain · 71 percent

Forecast · CyrusOne LON6 Iver Heath (Project)

Claim 5278 · Recorded claim type: Forecast · Review: Approved · Claim date: Jun 13, 2025

  1. CyrusOne Plans Pioneering New London Facility with Sustainability At Its Core

    CyrusOne · Document date: Jun 13, 2025 · Corroborating

    Source reference: SRC-0291 · Company announcement · Recorded authority: Party primary

    Source URL

    https://www.cyrusone.com/resources/press-releases/cyrusone-plans-pioneering-new-london-facility-with-sustainability-at-its-core

  2. Data Center — London, UK: LON6

    CyrusOne · Document date: Not stated · Primary

    Source reference: SRC-0290 · Fact sheet · Recorded authority: Party primary

    Source URL

    https://www.cyrusone.com/data-centers/emea/london-uk-lon6

Planned tree planting · 670 count

Forecast · CyrusOne LON6 Iver Heath (Project)

Claim 5279 · Recorded claim type: Forecast · Review: Approved · Claim date: Jun 13, 2025

  1. CyrusOne Plans Pioneering New London Facility with Sustainability At Its Core

    CyrusOne · Document date: Jun 13, 2025 · Corroborating

    Source reference: SRC-0291 · Company announcement · Recorded authority: Party primary

    Source URL

    https://www.cyrusone.com/resources/press-releases/cyrusone-plans-pioneering-new-london-facility-with-sustainability-at-its-core

  2. Data Center — London, UK: LON6

    CyrusOne · Document date: Not stated · Primary

    Source reference: SRC-0290 · Fact sheet · Recorded authority: Party primary

    Source URL

    https://www.cyrusone.com/data-centers/emea/london-uk-lon6

Public access green space · 18 acres

Forecast · CyrusOne LON6 Iver Heath (Project)

Claim 5280 · Recorded claim type: Forecast · Review: Approved · Claim date: Not stated

  1. Data Center — London, UK: LON6

    CyrusOne · Document date: Not stated · Primary

    Source reference: SRC-0290 · Fact sheet · Recorded authority: Party primary

    Source URL

    https://www.cyrusone.com/data-centers/emea/london-uk-lon6

Initial power target · Mid 2027

Forecast · Initial power and first-capacity delivery (Phase)

Claim 5282 · Recorded claim type: Forecast · Review: Approved · Claim date: Jun 13, 2025

  1. CyrusOne Plans Pioneering New London Facility with Sustainability At Its Core

    CyrusOne · Document date: Jun 13, 2025 · Primary

    Source reference: SRC-0291 · Company announcement · Recorded authority: Party primary

    Source URL

    https://www.cyrusone.com/resources/press-releases/cyrusone-plans-pioneering-new-london-facility-with-sustainability-at-its-core

  2. CyrusOne announces plans for 90MW data center campus in Buckinghamshire, UK

    Data Center Dynamics · Document date: Jun 13, 2025 · Corroborating

    Source reference: SRC-0294 · News report · Recorded authority: Secondary

    Source URL

    https://www.datacenterdynamics.com/en/news/cyrusone-announces-plans-for-90mw-data-center-campus-in-buckinghamshire-uk/

First capacity target · Early 2028

Forecast · Initial power and first-capacity delivery (Phase)

Claim 5283 · Recorded claim type: Forecast · Review: Approved · Claim date: Jun 13, 2025

  1. CyrusOne gets approval for £1.2 billion data centre in Buckinghamshire

    Montagu Evans · Document date: Jun 30, 2025 · Corroborating

    Source reference: SRC-0295 · Company announcement · Recorded authority: Party primary

    Source URL

    https://www.linkedin.com/posts/montagu-evans_go-ahead-for-our-client-leading-global-centre-activity-7346853175326326784-DqOW

  2. CyrusOne Plans Pioneering New London Facility with Sustainability At Its Core

    CyrusOne · Document date: Jun 13, 2025 · Primary

    Source reference: SRC-0291 · Company announcement · Recorded authority: Party primary

    Source URL

    https://www.cyrusone.com/resources/press-releases/cyrusone-plans-pioneering-new-london-facility-with-sustainability-at-its-core

Counterparties and capital

Buckinghamshire Council · Government authority · CMP-0174

CyrusOne · Operator · CMP-0172

CyrusOne UK6 Limited · Owner · CMP-0173

Montagu Evans · Contractor · CMP-0177

Scottish and Southern Electricity Networks · Operator · CMP-0175

UK Government departments · Government authority · CMP-0178

Investment commitment

£1,200,000,000 · Jun 13, 2025

More-than amount for local/national economic investment; financing structure and draw schedule undisclosed.

CyrusOne (Sponsor)

Sources (2)

Financing record 32; claim-specific source links appear in the exhibit sources where published.

This schedule captures public Cartis research. It is not a title, lien or legal-opinion report. Document page/section locators and claim review timestamps are included only when published; this version has no separate locator or claim-review-time feed.