1st time aged 17 at Didsbury test centre even though I forgot to use the handbrake on the three point turn.
I'd probably done enough to pass by performing a perfect unexpected emergency stop and later calmly pulling over to let a fire engine through.
At the end of the test the examiner held up the highway code and wasn't even looking at the pages containing the road signs he was asking me to identify.
When out on my first lesson, my instructor Ron Thurston said he would stick a pin in the back of my hand if I insisted on leaving it on the gear stick. And he did just that. Once was enough.