Brakes wear out between tests, so the above can still happen.
You notice them becoming s*it, and get them fixed to avoid costing money and inconvenience when you damage your own car.
As above, replacing brakes with steering.
As above, replacing brakes with throttle.
But not without prior warning.
If it's not affecting the handling of the car, it won't cause a problem.
Utter bullshit. An MOT is random what they spot.
The last one I had, it failed because a rear "passenger" door (with no seats in the back) couldn't be opened from the outside to let out the fictitious occupant. It's been like that for the previous 2 MOTs and they ignored it.
Yet this last MOT, they failed to bother with a completely non-functional windscreen washer, and wiper blades which don't wipe much off at all because half the rubber's falling off.
The rules are also daft. Your bonnet is designed with two catches incase one fails, but they don't have to both work. My car only has the front one, the cable stretched or something so I just disabled it with a crowbar. I just open the bonnet from the front. This passes every time because "the bonnet can be secured shut".
Why would you ask them to check something which is working?
I thought it was supposed to be zero. It seems there are advantages and disadvantages to both:
See, you were a learner and still managed to sort it, no harm done.
I had an old Range Rover with a permanently slightly on throttle. I had to stand on the brake to stop it moving at a junction (it was an automatic - if I selected neutral, it would sit there revving like hell). I did that if I was stopping for a while, and it really annoyed the person in front who thought I was being impatient. I almost destroyed a small car driven by an idiot mechanic driving it across the road to the garage he worked at. He pulled out in front of me and I had to brake hard. Considering the throttle was still on, I didn't slow down very much, and missed him by an inch. I wish I hadn't braked at all. A Range Rover hitting the driver's side of a tiny car would have been funny. Watching the mechanic explain what happened to the owner of the car would also have been funny.