The takeaway: A Guardian investigation published this weekend reports that OpenAI apparently never visited the Essex site earmarked for its flagship UK supercomputer before the project was announced — a project that was, and remains, a working scaffolding yard. Also today: Meta's Wyoming data centre contaminated a city's water-reuse system and got every data centre's wastewater suspended; Anthropic goes on the record about blocking China as Alibaba's ban approaches; and the UN's Geneva dialogue — tomorrow's lead — sets up a big week.

The flagship UK AI site nobody visited

When "Stargate UK" was announced during the September 2025 state visit — part of the £31bn US-UK tech package — the star was a supercomputer to be built by Nscale in Loughton, Essex, with OpenAI as anchor partner. A Guardian investigation (reported this weekend, carried by The Next Web — the original is on theguardian.com) reports that OpenAI apparently never visited the site before the announcement.

The detail is worse than the headline. When the Guardian's reporter visited Loughton in March, the site was a functioning scaffolding yard with no sign of construction — for a facility Nscale had said would be operational by the end of 2026, with 23,040 Nvidia GPUs promised by early 2027. Land records at announcement time showed the site still registered to a different company. A government press release described a £1.9bn investment contract with Nscale that, per the reporting, was never signed. And the Department for Science, Innovation and Technology is quoted admitting it is "not playing an active role in auditing these commitments."

OpenAI formally paused Stargate UK in April, citing UK industrial electricity costs (roughly four times US levels) and copyright-regulation uncertainty. What the weekend's investigation adds is the due-diligence picture behind the pause: a flagship national programme that, on this reporting, ran substantially on press releases. For UK readers the question it leaves is uncomfortable and simple — who, on either side, was checking?

Meta's data centre and the city's water

Cheyenne, Wyoming has suspended acceptance of certain wastewater discharges from every data centre in the city after its Board of Public Utilities traced contamination of the municipal water-reuse system to the contractor entity building Meta's $800m campus (Cowboy State Daily, Tom's Hardware).

The facts, precisely: a rare metal-resistant bacterium (Cupriavidus gilardii) was found in the city's reclaimed-water system — used for irrigation, not drinking water — back in February, knocking reclamation-plant reuse operations offline for months. The utility traced it to Goat Systems LLC, the Meta entity behind the campus, revoked its discharge privileges in March, and on Thursday 2 July publicly named Meta and extended the suspension citywide. Meta says it is "supporting the efforts of our general contractor, Fortis, to resolve this issue." The news is the public naming and the citywide suspension; the contamination itself dates to February. Data-centres-versus-water keeps hardening from an abstraction into municipal politics.

Alibaba–Anthropic, day three: Anthropic goes on the record

Anthropic has now stated its China policy plainly: "We explicitly prohibit accessing or facilitating access to Claude Code from unsupported regions, including China… We are the only frontier AI company that restricts service to companies owned by Chinese entities, even subsidiaries established outside China." A Claude Code team member added that the disputed detection mechanism was for catching account-resellers and distillation — not data collection — and is being removed. Alibaba's workplace ban takes effect Friday 10 July, with its in-house Qoder tool pushed as the replacement; no other Chinese firm has followed yet.

Anthropic's rough weekend, in brief

• The Claude Code cache-leak report we flagged yesterday has now hit the Hacker News front page — still a single user's report, still unreproduced, still no Anthropic response. We repeat: developing, not established.
• Fable 5's credits cliff lands Tuesday: bundled subscriber access ends 7 July, after which Fable use draws on paid credits. Anthropic's standing line, via a Claude Code lead engineer: not permanent — back in subscriptions "as soon as capacity allows".
• And one hedged brief: analyst outfit SemiAnalysis reports Meta is in advanced talks for a ~$10bn compute deal with Anthropic — Meta's new cloud hosting private Claude instances — per Techmeme's summary. Single-source analyst reporting; if real, the juxtaposition with this week's China story is striking: everyone wants Claude on their infrastructure, on very different terms.

Tomorrow: the UN's first Global Dialogue on AI Governance opens at Geneva's Palexpo — all 193 member states, with the scientific panel's report we covered on Thursday on the table. We'll lead with it Monday.

Disclosure: On The Wire runs on Anthropic models. We flag it every time we cover the company.