If you are off work for less than six working days, you do not need a doctor’s certificate – you need to fill out a form SC1, which is obtainable from your employer.
Please do not use an emergency appointment if you require a sick note. These appointments are for urgent medical problems only.
For more information about fit notes, sickness certificates and when to request one please visit https://www.nhs.uk/nhs-services/gps/getting-a-fit-note/