Where there is a legal order in place and the court has ordered contact with the parent(s), this should be complied with unless to do so would put the child you are caring for, or others at risk. If your child or someone in their household has contracted the Covid-19 virus, or they are displaying any the symptoms listed on the Government health advice pages, they should be self-isolating and should not be transferring between households. This is in line with the Government advice for households with possible Covid-19 infection.
You should try and be as accommodating as possible to allow contact to take place in another way. Think creatively about how you can support your child to stay in touch with their parent(s) during any period of self-isolation. For example, Skype or Facetime can be great way to catch up and can be used to read stories, sing or play together. With older children you could also consider a watch party, where you gather online to watch a movie or video, commenting and ‘reacting’ in real time.