As of the 8th of June 2015, the paper counterpart is no longer valid and is not issued with new licences.
When a pupil is starting a new course of driving lessons, the pupil is required to provide their instructor with their licence details.
This can be done through the official GOV.UK website below.
There are 2 options, a new pupil can either enter their driving licence number, national insurance number and postcode. This will generate a code which is valid for 21 days, the code can then be given to the instructor.
Option 2 is to give the instructor the driving licence number, national insurance number and postcode and the instructor can check online for these details.
The licence details MUST be checked before the new pupil can drive the instructors car.