I have a green colour deficiency.
I did the CAD test at City Uni in April 2009 and failed, 8.82 /rg, 1.13 /yb.
A few weeks ago I did the CAD test at Gatwick. First attempt I got 6.54 /rg, which is 0.54 above being colour safe. Because I was boderline, I was required to do the test 3 more times to get an average. Unfortunately the lowest I got was 6.44 /rg.
So annoying!