Right, this was not recently, but I am interested what others think of the experience.
I chose to book a driving lesson with Red driving school, which cost me £60 and I had to pay on the day of the lesson (normally, I like to pay in advance). The instructor arrived late, drove to the local leisure centre and told me to wait in the car whilst he went to use the facilities. He was gone for over half hour and then returned and drove me to the place we'd switch seats. The entire time I was driving, he was using his phone and not paying attention, even when I almost crash by driving into another vehicle, which was parked and fortunately nobody was inside. I thought this was unprofessional, so I made a complaint about him. He then sent me an email and basically threatened to kick my head in if I didn't revert the complaint, I forwarded the email to the driving school.