This package contains a function that can be used to scrape the information from the gov.uk pre-announcements pages for official statistics.
Call the function using scrapeR::scrape_preannouncements("uk-health-security-agency").
For preannouncement calendars of a different organisation, follow the link above, change the filter to the organsation you want, and replace the org parameter with however the organisation is presented in the page URL. It will usually be in the format of the organisation name, with each word separated by a hyphen.
To install this package, use:
devtools::install_github("BenCuff/scrape-gov.uk-preannouncements")