Ark Data Centres Elstree Campus Data Center 200MW Watford UK
Status: Announced / Planning & Pre-Development Phase | Location: A41 Watford Bypass, former Mercure Hotel Site (Hilfield Park), Watford, Hertfordshire WD25 8JH, United Kingdom
Project Overview
The Ark Data Centres Elstree Campus, also known as the former Mercure Hotel or Hilfield Park site, is a major proposed digital infrastructure redevelopment located along the A41 Watford Bypass in Hertfordshire, England. Developed by Ark Data Centres, a leading UK data centre campus operator, the project is intended to expand the region’s capacity to support hyperscale cloud computing, artificial intelligence (AI), and enterprise digital services. The development has been associated with an investment of approximately £2 billion and a planned critical IT load of up to 200 MW, supported by a reported 250 MVA utility power allocation. Its strategic location within the Greater London data centre market provides potential advantages through proximity to major business districts, established telecommunications networks, and the growing concentration of cloud and digital infrastructure providers around the capital. The proposed multi-building campus is designed to accommodate high-density computing environments, resilient electrical infrastructure, advanced cooling systems, and secure operational facilities required for mission-critical workloads. Its scale reflects increasing demand for data processing capacity driven by AI model training, cloud adoption, data storage, and digital transformation across industries. The site’s redevelopment also illustrates the growing role of large brownfield and previously developed properties in accommodating new digital infrastructure near major urban markets. If delivered as planned, the campus could strengthen the UK’s hyperscale data centre ecosystem and provide additional capacity for cloud platforms, technology companies, and organisations with demanding computing requirements. However, the project’s final capacity, investment value, planning status, power arrangements, and construction schedule should be confirmed against current official planning records and developer announcements before publication.
Quick Facts Selected Details
| Field | Value |
|---|---|
| Project Name | Ark Data Centres Elstree Campus Data Center 200MW Watford UK |
| Location | A41 Watford Bypass, former Mercure Hotel Site (Hilfield Park), Watford, Hertfordshire WD25 8JH, United Kingdom |
| Status | Announced / Planning & Pre-Development Phase |
| Project Type | Multi-Building Hyperscale, Cloud & Artificial Intelligence Campus (Elstree / Former Mercure Hotel Site) |
| Commissioning | 🔒 Subscriber Intelligence |
| Total IT Load | 🔒 Subscriber Intelligence |
| Total Capacity | 🔒 Subscriber Intelligence |
| Tier Level | 🔒 Subscriber Intelligence |
City Profile
| Header | Details |
|---|---|
| City Name | london |
| Population | 8.9 Million |
| Urban Agglomeration | 9.8 to 11.4 million |
| Economic Profile | 🔒 Detailed city intelligence available to subscribers |
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