Lord Sainsbury

David Sainsbury — Labour's Biggest Individual Donor 
 Full name: David Sainsbury, Baron Sainsbury of Turville
 Approx total donated (2024-2026): £8-10 million
 Source of wealth: Former chairman of Sainsbury's supermarket chain; family fortune estimated at £1.5 billion
 Why they donate: Long-time Labour supporter, science and innovation advocate, served as Science Minister under Tony Blair. Supports Labour as the most viable party for economic competence and public service investment.
 Controversies: Previous donations to Labour caused scrutiny over potential policy influence; his role as a Labour peer raises questions about donations and legislative influence. In 2024, his donations continued to be questioned in the context of Labour's ties to wealthy individuals. 
 Notes 
 
 Consistently Labour's largest single individual donor for decades 
 Owns the Sainsbury family's political giving — split with other family members who donate to Tories 
 Has funded Labour's general election campaigns heavily, including £5m+ to the 2024 campaign 
 Also funds Labour-aligned think tanks and policy groups