Driving Course
Once it's decided that you are ready for your advanced test, you should make your application directly with Headquarters using this link to test application forms

RoSPA Advanced Drivers and Riders will appoint an examiner who will contact you in due course. This can sometimes take some time as the examiners are often serving police officers but if you haven't been contacted within a few weeks please contact RoSPA Advanced Drivers and Riders using these contact details
Further information can be found in the Advanced Driving Test … what to expect