Section 83 of the Health and Safety Act details your rights;
Right of worker to cease or refuse to carry out unsafe work
A worker may cease, or refuse to carry out, work if the worker believes that carrying out the work would expose the worker, or any other person, to a serious risk to the worker’s or other person’s health or safety arising from an immediate or imminent exposure to a hazard.
Additional virus considerations.
My personal advice is to keep physical distance, avoid travel [especially in public transport like buses], and do not go to work if that involves significant social contact or close shared spaces.
Look after family members, do what work/education/entertainment you can on-line, and find some good books. [All the great books in History are available free on-line.] Garden, if you have that option.
Call me on 021-612340 if you would like to discuss reasons or details. Lee