I always thought that if you had holes in the wing for side repeaters then you need to have them working, unless you know the MOT man.

As for the retest bit, I spoke to the lads that I take my car to and they said that if your car fails on whatever, the reason they have to charge a full re-test is because under the new system they are not allowed to just test the failed items, they have to give the car a full test and yes, garages have already been caught out with the timing side of it, as in, I'll set the clock off, go and have a cup of tea, a sh1t and then finish the test etc.
