Here are some guidelines from www.theguardian.com/world/2020/mar/14/coronavirus-how-to-self-isolate-covid-19-symptoms
"Separate yourself from others. Stay in one room, with the door closed – ideally a room that has a window to the outside that you can open. Don’t share crockery, cutlery, glasses, bedding or towels with anyone in your home when you have used them. Dishwashers can be used to clean crockery and cutlery. If that isn’t possible, wash by hand and dry using a separate tea towel. Laundry, bedding and towels should be placed in a plastic bag and washed only when tests for Covid-19 are negative or self-isolation is over, if possible. Do not take anything to a launderette. If you have to wash at home, use temperatures of at least 60C.
Food and bathrooms. Have meals left outside your door. If you cook for yourself, do so, if possible, when others are not in the kitchen – and take food back to your room to eat. If you have more than one bathroom in your home, use a separate one. If you have to share, ensure you clean it thoroughly and regularly. Try to avoid using the kitchen or bathroom while others are there.
Keep away from pets if possible. Wash your hands before and after contact as a precautionary measure.
Safely dispose of tissues after you cough or sneeze. Dispose of them into a plastic bag and immediately wash your hands with soap and water, and dry thoroughly.
Waste disposal. All waste that you have been in contact with, including used tissues and masks, should be put in a plastic rubbish bag and tied when full. The plastic bag should then be placed in a second bin bag and tied. Do not dispose of it or put it out for collection until you have test results, or until quarantine is over."