“Fully leased” sounds decisive. It can be an important commercial announcement, but it answers a different question from whether a data centre has been handed over or is running customer workloads.
A developer’s full-letting announcement reports a commercial position. It does not, by itself, independently establish the agreement’s terms, the fulfilment of its conditions or the delivery of the service. To understand the claim, identify what has been committed, who says so and which milestone the evidence actually supports.
Commercial commitment is not operation
A lease of land, a powered-shell letting and a commitment to purchase computing capacity describe different relationships. An executed document may establish obligations without showing that the conditions for performance have been satisfied. A public announcement offers a different evidence basis again: it is the issuer’s account, not our inspection of the agreement.
This is not a reason to dismiss commercial disclosures. It is a reason to preserve their attribution and boundaries. The contrast between two GTR GB One announcements makes the distinction concrete.
GB One: full letting and Phase 2 handover are different disclosures
- 28 June 2023 · Whole-campus letting
- GTR announced that its GB One development was “fully leased on a long-term basis”. The client was unnamed. The same release forecast first-phase completion in spring 2024 and final delivery of all three data centres in early 2025. [1]
- 3 July 2024 · Phase 2 handover
- GTR reported “successful handover of Phase 2”, describing an additional 13.5 MW of power delivered to its customer and integrated systems testing. It still forecast Phase 3 completion later in 2024, with the whole campus delivered by year end. [2]
These are two developer disclosures, not a complete delivery history, an independently verified contract-to-operation chain or proof that handover began only in 2024.
The 2023 release concerns the campus’s commercial letting. The 2024 release reports delivery of a particular phase. Neither should be substituted for the other. The later handover statement adds a reported milestone; it does not retrospectively make the earlier letting announcement evidence of completed delivery.
Both accounts come from GTR, so they are not independent corroboration of the underlying contract. “Long-term” supplies no numerical lease duration, and neither inspected release supplies the customer’s legal identity or the agreement’s detailed conditions. The unnamed customers cannot independently be confirmed as the same contracting entity from these passages alone.
The July announcement date also does not establish the exact handover day. Nor does the fact that its year-end target has since passed prove that the remaining phase was delivered. These claims concern GTR’s named GB One campus; no identification with a particular planning parcel is needed for this comparison.
Why handover is still not live workload
The 2024 announcement is more specific than a future completion target: it reports Phase 2 handover and integrated systems testing. But we have not inspected a customer-issued acceptance statement, a handover certificate, the acceptance criteria or evidence of live customer workloads. Those limits remain even when the developer describes the handover as successful.
Keep the measurement boundary too. The handover release describes 13.5 MW of power; that should not silently become measured IT load or customer utilisation. Likewise, acceptance of a building, electrical system or computing service would establish different things. Ask what was accepted, by whom and within which phase—not simply whether something was “handed over”.
Manor Farm: negotiation progress is not lease signing
Tritax’s results announcement dated 6 August 2026 describes the “107MW Phase 1 Manor Farm pre-let in solicitors’ hands”. Its accompanying presentation records 15 NDAs signed with potential occupiers in Q3 2025 and progression to a preferred bidder in November 2025. These are issuer-reported historical process milestones, not our verification of customer contracts. [3] [4]
An NDA is a different agreement from a customer lease. Fifteen NDAs do not establish fifteen tenants or fifteen allocations of committed capacity. Preferred-bidder progression does not establish lease execution either. The object of the word “signed” matters as much as the word itself.
Our bounded check on 5 October did not establish a qualifying customer-signing disclosure. It was incomplete: the regulatory-news page required declarations we did not make, and we did not inspect the underlying announcements there. This is not a claim that Manor Farm remains unsigned today. It is a statement of what the checked material supports, with the original disclosure dates retained.
Akzo: not every lease establishes a data-centre customer
A planning document can contain a genuine lease reference without establishing end-user computing demand. The planning-obligations deed dated 23 July 2026 for the former AkzoNobel site’s P/00072/152 application says: “The Owner has granted the Lease.” Reading that recital alone leaves the important question unanswered: which lease? [5]
The deed’s definition identifies a lease of part of the site granted to Collen Construction (UK) Limited, dated 2 October 2025, with a stated term from 1 October 2025 to 30 January 2027. That records a specific site-lease relationship. It does not establish an end-user capacity commitment, a whole-campus letting or any contracted IT MW.
We have not audited the underlying lease, its permitted purpose or subsequent changes. The counterparty’s name alone should not supply those missing facts. The point is narrower: identify the relationship before classifying its commercial stage.
A checklist for reading commercial disclosures
- Who makes the claim?
- Is this an issuer statement, customer confirmation or an inspected document? What was actually verified?
- Who is the counterparty?
- Is the legal entity disclosed, or only an unnamed customer? Preserve that limit without treating non-disclosure as evidence of no commitment.
- What is committed?
- Land, shell, powered shell, IT capacity or managed service? Which building, phase and capacity measure does it cover?
- What agreement is evidenced?
- Has execution of that agreement been disclosed? What duration, conditions, termination rights and effective dates are established?
- What delivery milestone is reported?
- Separate handover, customer acceptance, occupation and live workloads. Evidence for one does not automatically answer the others.
- Which date does the evidence describe?
- Distinguish publication, the reported event or forecast, and your source-check date. A later retrieval does not make an old statement current.
Commercial and delivery arrangements differ between projects. These questions are not a legal test, readiness score or ladder that every facility must follow.
“Fully leased” can be commercially significant without establishing an operating facility. A useful reading keeps the commercial claim, its evidence basis and the physical milestone separate—and leaves unanswered questions visible rather than filling them with assumptions.
For the related boundaries, read A completed shell is not an operating data centre and Why data-centre MW figures cannot simply be added together. The research guide maps the wider series.
Sources and scope
The GTR and Tritax web disclosures and presentation were checked on 5 October 2026. The Akzo deed was retained on 1 October; its relevant recital and definitions were inspected on 5 October. This selective review does not independently verify leases, customer acceptance or live operation. Unknown is not absent, zero or adverse.
- GTR, Global Technical Realty Leases Entire GB One Campus, 28 June 2023, opening paragraphs. Developer-reported full letting and future delivery timetable; no underlying agreement inspected.
- GTR, Global Technical Realty Announces GB One Milestone, 3 July 2024, opening and integrated-systems-testing paragraphs. Reported Phase 2 handover; Phase 3 and whole-campus completion remained forecasts in that release. Same developer as source 1, not independent corroboration.
- Tritax Big Box, Results for the six months ended 30 June 2026, 6 August 2026, Growth driver 3. Attributed Phase 1 pre-let progress, not independent evidence of signing.
- Tritax Big Box, H1 FY26 results presentation (PDF), cover dated 6 August 2026, page 26. Historical Manor Farm NDA and preferred-bidder timeline. Exact first-publication time not established; same issuer as source 3.
- Slough planning portal, P/00072/152: completed Section 106 agreement, deed dated 23 July 2026. PDF page 3 / printed page 2 for parties and recital; PDF page 6 / printed page 5 for the Lease definition. These are statements within the planning deed, not our audit of the underlying lease, execution or title.
Source documents are linked, not reproduced. Public availability does not imply unrestricted reuse. This article is not legal, engineering or investment advice.