ARCHIVED: This Practice Note provides details of the various versions of guidance and advice that have been published by Acas, the Cabinet Office, HMRC and UK Health Security Agency (UKHSA) (formerly Public Health England (PHE)), and provides tracked change versions, showing the updates between one version and the next, to enable practitioners easily to ascertain which version of the relevant guidance was live at any given date. It is not maintained and is for background information only. In each case, the versions of the guidance are shown in reverse chronological order, with the most recent appearing first. For a guidance tracker that deals with: • the various versions of current guidance and advice issued by the Department for Business, Energy & Industrial Strategy (BEIS), see Practice Note: Coronavirus (COVID-19)—guidance tracker for employment (BEIS working safely guidance to 1 April 2022) [Archived] and Coronavirus (COVID-19)—guidance tracker for employment (BEIS working safely guidance to 18 July 2021) [Archived] • the various versions of current guidance and advice issued by the UK Border Agency, the Department