Last Wednesday, a conservationist named Jamie Robins walked up to Google's UK headquarters in Kings Cross, London. He carried a letter detailing a petition signed by almost 55,000 people. The ask: abandon plans for a large new data center in Thurrock, about 15 miles east of London. Wired reports it was one of several anti-data center demonstrations across Europe that week — in Amsterdam, protesters scaled a crane at a Microsoft data center site and unfurled an obscene anti-AI banner.

What makes the Thurrock fight worth watching is not the protest itself but the coalition behind it. A disputed carbon calculation sits inside Google's planning application.

What is actually at stake

The site is the former Arena Essex Raceway. A 52-hectare plot wedged between Lakeside Retail Park and the Mardyke Valley. Google acquired it through a subsidiary in 2023 — Big Issue reports the price was £47 million — and applied for planning permission to build a data center campus there in May 2025.

The land looks unremarkable from the air: a brownfield parallelogram with a pond and the oval of a dead speedway track. But it holds Local Wildlife Site status, and Buglife says it hosts hundreds of invertebrate species, including the brown-banded carder bee, the five-banded weevil-wasp and the dingy skipper butterfly, plus endangered plants such as broad-leaved cudweed and red-listed nightingales. Buglife says the plans would destroy over 80% of the site's 'Open Mosaic Habitat on Previously Developed Land', including Thames Terrace grassland that Natural England estimates is down to tens of hectares nationally.

Then there are the bikers. The Thurrock Hammers speedway club raced at Arena Essex for over 30 years before the track closed in 2018. The land was sold for a housing development that never materialized. The club — which still fields a 'nomad team' at other events — wants its home back. Planning rules require developers to replace community assets they destroy. That is the grounds of the Hammers' objection.

The carbon math problem

The third leg of the opposition is emissions, and this is where the paperwork gets uncomfortable for Google. The Guardian reported in May: developers working for Google compared one year of the proposed datacentre's emissions with the UK's entire five-year carbon budget, understating their share by a factor of five, according to the tech justice nonprofit Foxglove. The Thurrock application claims emissions of 0.033% of the UK's budgeted footprint for 2028–2032; on a like-for-like basis, the figure is 0.165%. A second Google site at North Weald shows the same pattern. Foxglove estimates the Thurrock facility could emit up to 570,000 tonnes of CO2 a year. And the Guardian reports it would produce more emissions than an international airport.

Of the roughly 1,000 public responses submitted to the planning authority, only one supported the project — though Thurrock Council points out many came from outside the local area.

Google's position

Google says the objections rest on misconceptions. The company claims it can deliver a net gain in biodiversity by retaining habitat and transplanting endangered plants, and that it will offset emissions by financing new renewable generation on its way to its 2030 carbon-free target. On the speedway, its position is blunt: the track has been out of use for years, so razing it is not the loss of a living community facility. "We want to be good neighbors," Adam Elman, Google's director of sustainability for EMEA, told Wired. "We recognize the ecological value of these sites."

What happens next

Thurrock Council told Wired it expects to rule on the initial application early next year. Even a refusal may not end it: when Slough council failed to decide on a greenbelt data center in June, ministers approved it anyway as critical national infrastructure. The UK government has forecast a thirteenfold rise in computing demand over the next decade and is actively courting data center investment.

But the opposition has wins too. Foxglove recently succeeded in a legal challenge that forced the government to withdraw planning permission for a data center to the west of London. The precedent cuts both ways, and protesters say they are prepared for a war of attrition.

If you build or buy AI capacity, take note: siting risk is now real. Data centers are no longer a planning formality in the UK — and in the US, the EPA just exempted them from acid-rain rules. Ecological surveys, emissions accounting and even dead sports grounds can each stall a hyperscale project. Renewable-powered designs answer part of the carbon objection, not the habitat one. Whether Thurrock approves, refuses or gets overruled will say a lot. Anyone scoping a data center migration should treat local consent as a design constraint, not a paperwork step.