The UK real-estate investment trust Tritax Big Box told the market on Monday morning that it has secured planning consent for a 107-megawatt data centre near Heathrow, clearing a judicial review that had held the scheme up.
The site
Manor Farm is a 74-acre plot inside the Slough availability zone — the corridor west of London where most British data-centre demand concentrates and where grid capacity is scarcest. Consent survived judicial review, which is the step that kills schemes in this market rather than planning committee itself.
What the company claims
Tritax projects a 9.3% yield on cost and an "accelerated pathway to power delivery", and says it holds more than 230 MW of secured opportunities with a further pipeline near one gigawatt.
The tenant is not signed
The pre-let agreement is described as being "in solicitors' hands." That is a negotiation in documentation, not an executed lease, and a consented shell without a signed tenant is a different asset from a pre-let one. The yield figure and the power-pathway claim are both company statements, and no construction start or first-power date was given.
Check the megawatts against the old marketing
The site was promoted in January 2025 as a 147 MW opportunity. What was consented is 107 MW. Reports reaching for the larger figure are quoting a sales brochure rather than a permission.
The pivot underneath it
Tritax's business is big-box logistics warehouses. Converting land banks into consented data-centre capacity is the trade a number of European industrial landlords are now making — the tenants pay more per acre, and the binding constraint moves from planning to the electricity connection queue.