Interesting thread this.
I used a couple of MOT stations back in Devon, who were independent garages at the time, and always enjoyed a good relationship with them. They would never fail any of my 'Specials' on silly things, like empty washer bottle, or a bulb out etc, but would give me the option of grabbing some tools, and letting me get on with it before giving me a ticket!
I used to run a 67 beetle, a Lomax 4 wheeler, a Silva Leader, a Moss Malvern, a Volksrod Buggy, and an Espace Quadra depending on the time of year, so you can imagine, the garages would often actually look forward to my visits

, they enjoyed the change from the run of the mill cars I think.
It has been over ten years since I was in the U.K., so I don't know what has changed since moving to France.
What I do like here, is that all the 'Controle Technique' (MOT) stations, are government franchised, hence no affiliation to any garages. The stations are spotless, and have more of an air of a dentists surgery, no tools, no oily floors, palm trees in pots are the order of the day!. The test is fully documented, and split into sub sections which relate to all aspects of the car. The test, once passed, lasts for two years

which can lead to a few bangers limping about on the roads due to lack of maintenance, but from my point of view, and always having maintained my own vehicles, means that I just need to worry Bi-annually!!!