Pet shops can be open for business but the priority should always be to keep you, your staff and your customers safe within the Government advice on social distancing.
Here is a link to the Health and Safety Executive about carrying out a risk assessment to keep open for business.
This is a link to more information about the NHS Test and Trace system if a member of staff thinks they have coronavirus.
There is useful advice here from ACAS for employers and their staff which covers issues about continuing to work.
Selling plants by home delivery
If you have set up a temporary home delivery service for plants then unfortunately this does mean you should be issuing plant passports to the customers who receive them. You might not have done this before if you only sold plants in your shops direct to customers. We have asked for advice from Defra on this who have told us it will take a pragmatic view on this. So if you are doing this and only intend to do home deliveries during the current crisis (as a temporary arrangement only) then ensure you are registered as a Professional Operator and be aware of the guidance on GOV.uk and the Plant Health Portal. You might also find our plant passport guidance explains more (but bear in mind this was written before the current crisis).