The latest statistics for reported/notified cases of Legionnaires’ disease in December 2018 and a summary for the whole of 2018. In December there were 63 cases and there were 814 in 2018.
Interestingly, the graph indicates a rise in cases during the summer months. It also breaks down the figures into categories showing the source of infection. https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/776445/Monthly_LD_Report_December_18.pdf