Public Health Scotland (PHS) is the national public health body for Scotland. It is a Special NHS Health Board, and it is jointly accountable to the Convention of Scottish Local Authorities (COSLA) and the Scottish Government. Fully exercising its functions from 1 April 2020 as Scotland's leading national agency for improving and protecting the health and well-being of all of Scotland's people, it is jointly sponsored by COSLA and the Scottish Government, and collaborates with third sector organisations.