If you have been ill for 7 days or less you don’t need to see a Doctor. You can complete a Self Certification form yourself. However, some employers insist on a Doctor’s note regardless. A Doctors note under these circumstances involves a charge of £20.00.
Download a Self Certification Form to print and complete by hand or fill one in electronically directly on GOV.UK
Download and print – Self Certification Form
Complete online – Self Certification Form