There are 3 Steps to the Legal Process

Below, we list the 3 steps to the Legal Process of becoming a Driving Instructor:

Step 1 - Check List

To become a Approved Driving Instructor (ADI) in the UK, you must:

  1. Have held a driving licence for at least 3 years
  2. Be able to read a licence plate at 90 feet (27.5m) – glasses or contacts are OK
  3. Have no more than 6 points on your licence
  4. Allow the Government (DVSA) to complete Criminal Records Bureau (CRB) check


Step 2 - Criminal Records Bureau (CRB) Disclosure Check


Next, you must obtain a Criminal Records Bureau (CRB) Disclosure Number.


You can complete the application online by clicking here: online and register. You will need an email address and will be asked to create a password.
Or you can apply for this by calling GBOnline on 0845 251 5000 and complete the application form they send you in the post.

You will then need the following information:

  • the organisation PIN of ‘105205’
  • the ‘secret word’ which is ‘axis’
  • the organisation name of ‘DVSA – PDI (PO)’


The application can take anything from 2- 6 weeks.

TMG will write to you enclosing your Disclosure Certificate which includes the Disclosure Number.


Step 3 - DVSA ADI 3

Once you have received your Criminal Records Bureau (CRB) Disclosure Number, you can now register as a PDI (Potential Driving Instructor) and receive your Personal Reference Number (PRN) needed to book your tests.
To apply by post, complete your ADI3 (click here) and return to DVSA address on form.
Or to apply online, click here: ONLINE.
You will need the following information to complete your application:

  • your driving licence number
  • your Criminal Records Bureau (CRB) Disclosure Number and the date it was produced (unless you’ve been told not to get one yet)
  • details of any motoring or non-motoring offences, disqualifications from driving or of any court cases being brought against you

The DVSA will write to you to confirm your registration and PRN.
The process can take approx 4-6 weeks. We would advise starting your studies ASAP and prepare for Part 1 whilst this process is being completed.
You now have your DVSA PRN (personal reference number). You may now book your 1st test when ready.

If you have any questions about any part of the process, please do not hesitate to call us on:

0800 09 88 321



If you are thinking of becoming a driving instructor then I can't rate SmartDriving highly enough.

The training system is excellent the virtual classrooms are enjoyable and very informative and Andrew and the team are always available to answer any queries, not matter how trivial.

Top Team who assisted me greatly in obtaining my ADI Licence.

Richard Hart

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