I bet anyone who he passes a test with him in the car will have to be bloody good!!
My examiner was nick named the "smiling assassin" by local driving instructors. As I was on the way to the test centre I was asking my instructor if he knew about this and he said he did, she's the one women there. As examiners start to come in, low and behold I hear a lady asking for "Thomas?"
She was known as that as she is very friendly, chatty and
smiley, and then fails you

...she was a very nice lady and I passed first time, so her nick name was only half right for me

...I knew someone who she failed 6 times.
After passing first time with her I ignored people when they started blaming everyone else for why they failed their driving test.