They were already contracted by NHS to monitor vaccine distribution and covid data in 2020, that contract was terminated and moved to Mozaic Services after public outcry over data privacy concerns. https://www.cnbc.com/2021/09/10/uk-ends-one-of-its-data-shar...

Did you read the article? Adult social care dashboard not vaccine data. Mozaic just handled migration and is not the host.

NHs FDP (Foundry) still has the vaccine data last time I checked.