Ok so there is some uncertainty over the rues, which is understandable, but the following is taken direct from the Government document about this and this was issued following the latest official guidance:
Employers who have people in their offices or onsite should ensure that employees
are able to follow Public Health England guidelines including, where possible,
maintaining a two metre distance from others, and washing their hands with soap
and water often, for at least 20 seconds (or using hand sanitiser gel if soap and
water is not available).
Any business can remain open as long as they are not on the list of businesses which must close:
If they are open they should seriously consider allowing people to work from home if possible. If they cannot do so, then the guidelines on social distancing and hand washing should be followed, with the phrase ‘where possible’ being key – i.e. not mandatory.
If you feel unsafe at work then you cannot be forced to attend and can consider whether to self-isolate, although you will only get sick pay in that case.
Does this answer your query?