The Cockcroft Institute is an international centre for Accelerator Science and Technology (AST) in the UK. It was proposed in September 2003 and officially opened in September 2006. It is a joint venture of Lancaster University, the University of Liverpool, the University of Manchester, the Science and Technology Facilities Council, and the Northwest Regional Development Agency. The Institute is located in a purpose-built building on the Sci-Tech Daresbury campus, and in centres in each of the participating universities.