I failed the CAD test with an AME in London with a score of about 12.35 red/green. Then took it again at London city and passed it with 11.80. As of course they are being averaged out. I took it again at city to get the average below 12, feeling more relaxed, more rested and more familiar with the whole process and I scored BELOW 10 the third time. Please don't give up. That was all back in 2016. I have been flying commercially since 2019.