[header] How to find a good driving instructor in the uk [title] Find out what qualification the instructor holds. [step] A permitted and legal driving instructor will display a coloured badge in their front windscreen that will be either pink or green. A pink badge indicates that the instructor is not fully qualified and is only a trainee, known as a " potential driving instructor " (pdi). 
A green badge indicates that the instructor is fully qualified, known as an " approved driving instructor " (adi). For the best results, go with an instructor that has a green badge.