In the Car and Trailer app, you can request reminders when the deadline for the mandatory roadworthiness test is approaching. You will receive reminders both two months and one month before the test deadline. If you change your phone, you need to request the reminders again. The service is free of charge.
As the owner of a vehicle, you are responsible for ensuring that the vehicle is tested and approved within the deadline.
This deadline is final, so you should allow enough time to take the test, rectify any problems, and arrange to have the vehicle re-inspected and approved.
Read more about how to have the vehicle re-inspected and approved