"The project will be led by McLaren Automotive but involves a total of six partners. McLaren Automotive will work with its existing engine manufacturing partner, Ricardo, and BMW Group while Grainger and Worrall will deliver complex, lightweight casting technology. Lentus Composites will contribute knowledge in specialist composite structures. Completing the syndicate is the University of Bath who bring their advanced research and development capabilities in internal combustion engine systems efficiency."

Doesn't say anything about Ricarco disappearing. In fact, it explicitly mentions them being part of the six partners.