Your first step is to check if you can apply to become an approved driving instructor.
The next stage is to find a training provider on the Approved Driving Instructor (ADI) register .
You'll need to pass the approved driving instructor part 1 and part 2 exams. If successful, you can get a 6-month licence that allows you to train learner drivers and legally charge for lessons.
You must then pass the part 3 exam to fully qualify as an instructor and get onto the ADI register.