One thing that got lost in the discussion is your examiner qualifications. What exactly are you authorised by the CAA to examine ?
Write to them and ask.......

I am sure Peter will have an educated 'opinion' to share on that front.....
There was no patronising going on. You are really into your conspiricy theories arent you?
As I said the gorunds for appeal are simple. If a candidate accepts that the whole test was a failure then why make such an issue over non fail items?
The 170A is a checkpoint test, it ensures the candidate is ready for the real test and in reality is probably harder than the actual flight test. if nothing else Peter should now know what is expected of him when I takes the final test.