ADIs will no longer be able to sign up to take part in the test trials from next month according to the Driver and Vehicle Standards Agency (DVSA).
From 1 February 2016, ADIs will no longer be able to register to take part in the practical driving test trial.
DVSA began trialling changes to the practical driving test in April 2015 to look at ways of better assessing the learners' ability to drive safely on their own and is currently running at 32 driving test centres across the UK.
The agency said the trial was now approaching the number of driving instructors required.
If you are an ADI that has registered for the trial, you can still recruit learner drivers.