Issued: Mon, 01 Jun 2020 17:00:00 BST
The UKVI document 'Coronavirus (COVID-19): Tier 4 sponsors, migrants and short-term students' (which outlines temporary concessions in response to Covid19) has been updated today to state that the Foreign and Commonwealth Office have resumed assessment of ATAS certificate requests.
It now states "Applications can now be made to the Foreign and Commonwealth Office for a new ATAS certificate. Current rules on the requirement to obtain an ATAS certificate continue to apply."
See here for the full document.