My USA built Honda had the indicators on permanently but these had to be disconnected to pass the MOT.
Some MOT testers must be prepared to risk their licence. Both my sons will no longer be MOT testers due to disputes with the VOSA bunch. One son was taken to court as he did not quite follow the set down way of the test. The magistrate fined him nothing and told VOSA they would not be able to claim costs. Magistrate could not see why VOSA brought this to court at all. That was when he decided to quit MOT testing and just repair cars. Other son who owns a garage now takes his repaired cars to another MOT station. He will never do testing again either.