Slough Holdings UK Limited is a UK private limited company established in December 2024 to advance major digital infrastructure development. The company is a wholly owned subsidiary of affiliated investment funds managed by SDC Capital Partners, a U.S.-based investment firm specializing in data center development and digital infrastructure. Slough Holdings is the applicant for the proposed SDC M40 Campus at Wapseys Wood in Buckinghamshire. The project would establish a large-scale data center campus alongside supporting energy infrastructure. In March 2026, the UK government directed the project to be treated as a Nationally Significant Infrastructure Project, allowing it to progress through the Development Consent Order process.