Often patients consult for a sick note when one is not necessary. There are strict guidelines that Doctors have to follow when issuing sick notes.
You DO NOT need to see the Doctor for an illness lasting less than 7 days.
From the 6th of April 2010, medical certification (sick notes) have changed to "fit notes"
The new "fit notes" contain sections to be filled out by the doctor on how people who are on sick leave can return to work earlier
For more information please see www.dwp.gov.uk/fitnote/