If you get to work and it seems unsafe, if they do not provide masks, sanitiser and strictly enforce 2m rule ...Take photos, video (not for social media), inform management, ask for a copy of a recent risk analysis....

leave the premises to read it and inform the authorities and union...good luck. The quaint concept of "common sense" is not a reality that you can rely upon.

Trust your instincts and make sure management enforce structured well planned positive change within your workplace for the good of those that are employed and ultimately society in general.